®
HELiOS
Reservoirs

Technical Service ManualI Preface
HELiOS Reservoirs

SERVICE MANUALHELiOSCAIRE, Inc.
2200 Airport Industrial Dr., Ste. 500
Ball Ground, GA 30107
www.caireinc.com
Customer/Technical Service:North and South America
Phone (US Only):
800-482-2473
US:
770-721-7759
Asia, Australia, Pacific Rim
Phone:
770-721-7759
EuropePhone:+44 (0) 1189 367060

Fax: 888-932-2473
Fax: 770-721-7758
Fax: 770-721-7758
Fax: +44 118 9799245

For Customer or Technical Service needs (product assistance, ordering, part numbers, specifications, unexpected events, etc.) contact:
CAIRE Inc.
2200 Airport Industrial Dr., Ste. 500
1-800-482-2473
www.caireinc.com

NOTE: CAIRE Reservoir and Portable units are intended only for the delivery of medical grade oxygen as prescribed by a physician.
NOTE: SI pressure values expressed in manual are referenced to atmosphere.
HELiOS™, Companion®, and Liberator™ are trademarks of CAIRE INC.
SNOOP® is a trademark of the SWAGELOK Co.
Teflon® and Krytox® are trademarks of E. I. DUPONT DE NEMOURS & Co.
Kel-F® and Scotch-Brite™ are trademarks of the 3M Co.
Magnehelic® is a trademark of the DWYER INSTRUMENT Co.
QUICK-GRIP® is a trademark of the AMERICAN TOOL Co.
Sporicidin® is a trademark of SPORICIDIN INTERNATIONAL.

Disclaimer
This manual is intended for use by experienced personnel only. No attempt should be made to fill or maintain this equipment until
both this manual and the Patient Operating Instruction booklet have been read and fully understood.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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I Preface

ISO 7000; Graphical symbols for use on equipment—Index andsynopsis

Read user’s manual before operation. Reg. #1641
Operating temperature limitation of these units
is 10°C to 40°C. Storage temperature limitation
range is -40°C to 70°C. Reg. # 0632

This device complies with the requirements of
Directive 2010/35/EU concerning medical devices. It bears the pi marking as shown.

ADR: European Agreement concerning the International
Carriage of Dangerous Goods by Road

Non-toxic gas.

Keep away from rain, keep dry. Reg. # 0626

Hazard Oxidizing substances: fire intensifying
risk.

Name and address of manufacturer. Reg. #3082

Refrigerated Liquid, USP; Produced by Air
Liquefaction

Caution, consult accompanying documents.
Reg. # 0434A
Catalog Number. Reg. # 2493

Internal Symbols

Keep unit well ventilated at all times

Serial Number. Reg. # 2498

Keep away from flammable materials, oil andgrease.

This way up. Reg. # 0623

Portable Empty

Fragile, handle with care. Reg. # 0621

Portable Full

ISO 7010: Graphical symbols—Safety colors and safety signs—
Registered safety signs

Frostbite may occur on contact with cold liquid
or gaseous oxygen, or frosted parts. Warning
low temperature. To warn of low temperatureor freezing conditions. Reg. # W010
Keep away from open flame, fire, sparks. Open
ignition source and smoking prohibited. Reg. #P003
Do not smoke near unit or while operating unit.
Reg. # P002
Type BF applied part (degree of protection
against electric shock). Reg. # 5333
Warning. Reg. # W001

Council Directive 93/42/EEC; concerning medical devices

Authorized representative in the European
Community
This device complies with the requirements of
Directive 93/42/EEC concerning medical devices. It bears the CE marking as shown.

HELiOS Reservoirs

Symbols Glossary

Always keep Portable in one of the following
positions: upright, flat on its back, or any position in between.
Wipe connector with clean dry cloth before
filling.
IEC 60417: Graphical Symbols for use on equipment

Do not cover unit or carry portable unit under
your clothing. These units normally vent oxygen. No. 5641
21 CFR 801.15: Code of Federal Regulations Title 21

Federal law restricts this device to sale by or on
the order of a physician.

Council Directive 2012/19/EU: waste electrical and electronicequipment (WEEE)

WEEE
IEC 60601-1: Medical electrical equipment Part 1 General requirements for basic safety and essential performance
Drip ProofHELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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II Table of Contents
II. Table of Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
III. Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IV. Equipment Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

HELiOS Reservoirs

I. Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

V. Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
VI. Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VII. Saturation Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
VIII. Unpacking and Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
IX. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
X. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
XI. Troubleshooting & Repair Procedures. . . . . . . . . . . . . . . . 25
XII. Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
XIII. Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
XIV. Return & Restocking Policy . . . . . . . . . . . . . . . . . . . . . . . . . . 46
XV. Service Tools/Equipment/Supplies. . . . . . . . . . . . . . . . . . . 47

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III Safety
Oxygen, as it exists at standard atmospheric pressure and temperature, is a colorless, odorless, and tasteless gas. Oxygen constitutes 21% of the atmosphere, by volume. Aside from its welldocumented ability to sustain life, oxygen also supports combustion, even though it is nonflammable. Many substances which
will burn in air, burn at a faster rate and at a higher temperature inan oxygen enriched atmosphere. Other materials that do not burnin air will burn as oxygen concentration increases. Additionally,
many greases and liquid solvents become extremely hazardous
materials when placed in an oxygen-enriched environment. In its
liquid form, oxygen is still odorless and tasteless, but is pale bluein color. At an operating pressure of 1,4 bar /20 psig, the temperature of liquid oxygen is about -173°C/-280° F. Skin exposed
to such a low temperature can become severely frostbitten.
Contraindications
While CAIRE, Inc. equipment is designed and built to the mostrigid standards, no piece of mechanical equipment can ever bemade 100% foolproof. Strict compliance with proper safety practices is necessary when using any CAIRE unit. We recommendthat our distributors emphasize safety and safe handling practices
to their employees and customers. While safety features havebeen designed into the unit and safe operations are anticipated, it
is necessary that all distributor personnel carefully read and fully
understand WARNINGS, CAUTIONS, and NOTES throughout
the manual. Periodic review of this information is recommended.
These hazards require certain safety precautions to be taken
when working with or around gaseous and/or liquid oxygen.

WARNING: Never permit combustible substances such as
greases, oils, solvents, or other compounds not oxygen compatible to contact any component of the unit exposed to higherthan atmospheric concentrations of gaseous or liquid oxygen.
This especially applies to tubing, fittings, and valves.
WARNING: Keep oxygen equipment away from open flames
or electrical appliances such as heaters, stoves, toasters, andother devices with heating elements.
WARNING: Never permit smoking in an area where oxygen
equipment is repaired, filled, or used.
WARNING: Always wear goggles, a face shield, and insulated
gloves when working with or around liquid oxygen.

WARNING: Do not modify equipment without authorizationfrom the manufacturer.

WARNING: These devices are not intended for life supporting
applications nor do they provide patient monitoring capabilities.
WARNING: In certain circumstances, the use of non-prescribed oxygen can be hazardous. These devices should only be
used when prescribed by a physician.
WARNING: Not for use in the presence of flammable anesthetics.

HELiOS Reservoirs

Safety Guidelines and Operational Safety

CAUTION: All CAIRE reservoir units should be moved by utilizing the roller base or hand truck. Do not roll units on theirside or edge as insulation damage can occur. All CAIRE reservoir units must be used, stored, and transported in a vertical
position. Do not lay, store, or ship on its side.
WARNING: Excess accumulation of oxygen creates anoxygen-enriched atmosphere (defined by the Compressed Gas
Association as an oxygen concentration above 23%). In an
oxygen-enriched atmosphere, flammable items may burn vigorously and may explode. Certain items considered noncombustible in air may burn rapidly in such an environment. Keep allorganic materials and other flammable substances away frompossible contact with oxygen; particularly oil, grease, kerosene,
cloth, wood, paint, tar, coal dust, and dirt which may contain oilor grease. DO NOT permit smoking or open flame in any area
where oxygen is stored, handled, or used. Failure to comply
with this warning may result in serious personal injury.
WARNING: In the event a unit is dropped, tipped over, or
unreasonably abused, immediately, but cautiously, raise thecontainer to its normal vertical position. If substantial container damage has occurred, remove the liquid oxygen fromthe vessel in a safe manner (RP3). Purge the unit with an inert
gas (nitrogen) and promptly return it to CAIRE for inspection.
The container should be prominently marked “CONTAINERDROPPED, INSPECT FOR DAMAGE.” Failure to comply
with these procedures may result in personal injury and can seriously damage the container.
WARNING: Personnel must remove liquid oxygen and depressurize the unit before removing parts or loosening fittings froma unit. Failure to do so may result in personal injury from theextreme cold of liquid oxygen and/or the pressure in the vessel.

WARNING: During transfer of liquid oxygen, components will
become extremely cold. Care should be used to avoid any contact with these components, as serious frostbite may result.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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III Safety
WARNING: The possibility of fire exists when the combination of a fuel, source of ignition, and oxygen is present. Highconcentrations of oxygen (air is approximately 21% oxygen)greatly enhance the possibility of combustion.
NOTE: Figure 1 below is referred to as the fire/combustion triangle. This triangle describes the three factors required for fire/combustion to occur.

WARNING: During transfer of liquid oxygen gas blow offfrom the vent valve creates a loud horn-like noise. Ear protection is recommended.
WARNING: Extreme high pressure can rupture container orplumbing components. Be sure specified pressure relief devices
are present, in the proper location, and functioning properly.

HELiOS Reservoirs

WARNING: When using concentrated oxygen, the risk of fireis increased.

NOTE: Liquid oxygen at atmospheric pressure expands at aratio of approximately 860:1 (at 0 bar/ 0 psig) when vaporizing
into a gas. This can occur very rapidly when exposed to theheat in the atmosphere. See Figure 2 for comparison.

GAS

OXL
Figure 1: Fire/Combustion Triangle

1
NOTE: To reduce the risk of combustion/fire when dealing
with LOX, please refer to the following suggestions• Obtain all replacement parts for medical oxygen equipmentfrom the manufacturer.
• Use only recommended oxygen compatible cleaning andleak detection products.
• Keep the reservoir upright at all times. Secure liquid oxygen equipment when transporting to prevent accidental
tipover and spillage.
• If a liquid oxygen spill occurs indoors, open doors andwindows to ventilate the area. Avoid sources of ignitionand do not walk on or roll equipment over the affectedarea.
• Any clothing or porous material that is splashed with liquid oxygen or otherwise absorbs high concentrations ofoxygen should be removed and aired for at least one houraway from any source of ignition.

860
Figure 2: LOX to Gas ratio

WARNING: Do not smoke or keep burning tobacco near thisequipment. Death or injury may occur.
WARNING: Keep flammable materials away from this equipment. Oils, grease, including facial creams and petroleum jelly,asphalt, and synthetic fibers ignite easily and burn rapidly inthe presence of concentrated oxygen. If needed, use only specified oxygen compatible lubricants as directed.

WARNING: Liquid oxygen vessels periodically release small
amounts of oxygen gas that must be ventilated to prevent pressure buildup. Do not store liquid oxygen equipment in a car
trunk, closet, or other confined area. Do not place bags, blankets, draperies, or other fabrics over the equipment when it
contains liquid oxygen.

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III Safety
Guidance and Manufacturer’s declaration—electromagnetic emissions
The HELiOS is intended for use in the electromagnetic environment specified below. The customer or the user of the HELiOSshould assure that it is used in such an environment.
Emissions test

Compliance

RF emissions

Group 1CISPR 11		

Electromagnetic environment—guidance
The HELiOS uses RF energy only for internal function.

HELiOS Reservoirs

Table 2

Therefore, its RF emissions are very low and are not likely tocause any interference in nearby electronic equipment.

RF emissions CISPR 11

Class B

Harmonic emissions
IEC 61000-3-2

The HELiOS is suitable for use in all establishments, including
Not applicable

Voltage fluctuations/		
flicker emissions

domestic establishments and those directly connected to the public
low-voltage power supply network that supplies buildings used for

Not applicable

domestic purposes.

IEC 61000-3-3• Medical Electrical Equipment needs special precautions regarding EMC and needs to be installed and put into service according
to the EMC information provided in this manual.
• Portable and mobile RF communications equipment can affect Medical Electrical Equipment.
• The use of Accessories, transducers, and cables other than those specified, with the exception of transducers and cables sold by
the Manufacturer of this device as replacement parts for internal components, may result in increased Emissions or decreased
Immunity of the HELiOS Reservoir.
• The HELiOS Reservoir should not be used adjacent to or stacked with other equipment and that if adjacent or stacked use isnecessary, the HELiOS Reservoir should be observed to verify normal operation in the configuration in which it will be used.

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III Safety
Guidance and manufacturers declaration—electromagnetic immunity
The HELiOS is intended for use in the electromagnetic environment specified below. The customer or the user of the HELiOSshould assure that it is used in such an environment.
Immunity test

IEC 60601 test level

Compliance level

Electrostatic±6 kV contact±6 kV contact±8 kV air

±8 kV airdischarge (ESD)
IEC 61000-4-2			

Electromagnetic environment—guidance
Floors should be wood, concrete or ceramic tile. If floors

HELiOS Reservoirs

Table 3are covered with synthetic material, the relative
humidity should be at least 30%.*

Electrical fast

±2 kV for powerNot applicabletransient/burst

supply lines

DC powered device

IEC 610004-4±1 kV forNot applicable		Not applicable

input/output lines No data input/output lines±1 kV line(s)SurgeIEC 61000-4-5

to line(s)Not Applicable±2 kV line(s)DC powered device

Not Applicableto earth
Voltage dips,<5% UT (>95% dip		short interruptionsin UT) for 0,5 cycle		and voltage

40% UT (60% dip		variations on

in UT) for 5 cycles

Not Applicable

power supply

70% UT (30% dip

DC powered device

input lines

in UT) for 25 cycles		IEC 61000-4-11<5% UT (>95% dip

Not Applicablein UT) for 5 sec
Power frequency

3 A/m

3 A/m

Power frequency magnetic fields should be at levels(50/60 Hz)

characteristic of a typical location in a typicalmagnetic fieldcommercial or hospital environment.

IEC 61000-4-8
Note: UT is the a.c. mains voltage prior to application of the test level.

* This statement indicates that the required testing was performed in a controlled environment and the HELiOS are found to be compliant with regulations.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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III Safety
Guidance and manufacturers declaration—electromagnetic immunity
The HELiOS is intended for use in the electromagnetic environment specified below. The customer or the user of the HELiOSshould assure that it is used in such an environment.
Immunity test
Conducted RF
IEC 61000-4-6

Radiated RF
IEC 61000-4-3

IEC 60601 test level
3Vrms
150kHz to 80 MHz

3 V/m
80 MHz to 2,5 GHz		

Compliance level
Not Applicable
Battery powered
device3 V/mElectromagnetic environment—guidancePortable and mobile RF communications equipment should
be used no closer to any part of the HELiOS, including
cables, than the recommended separation distancecalculated from the equation applicable to the frequencyof the transmitter.
Recommended separation distanced = 1.2 √P
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 800 MHz to 2,5 GHz

HELiOS Reservoirs

Table 4*

where P is the maximum output power rating of thetransmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as determinedby an electromagnetic site surverya, should be less thanthe compliance level in each frequency rangeb.
Interference may occur in the vicinity of equipment marked
with the following symbol:

NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection fromstructures, objects and people.
aField strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios,amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To asses the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured fieldstrength in the location in which the HELiOS is used exceeds the applicable RF compliance level above, the HELiOS should beobserved to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the HELiOS.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

* This table is included as a standard requirement for equipment which has been tested to specific test levels and over specificfrquency ranges and been found compliant with regulations.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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III Safety
Recommended separation distances between portable and mobile
RF communications equipment and the HELiOS
The HELiOS is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or the user of the HELiOS can help prevent electromagnetic interference by maintaining a minimum distance between portable andmobile RF communications equipment (transmitters) and the HELiOS as recommended below, according to the maximum output
power of the communications equipment.

HELiOS Reservoirs

Table 5*

Rated maximum output		Separation distance according to frequency of transmitter
power of transmitterW

150 kHz to 80 MHz

m

80 MHz and 800 MHz 800 MHz to 2,5 GHz

d=1.2√P

d=1.2 √P

d=2.3 √P

0,01

0.12 m0.12 m

0.23 m0,10.38 m0.38 m0.73 m

1

1.2 m

1.2 m

2.3 m

10

3.8 m

3.8 m

7.3 m

100
12 m
12 m
23 m
For transmitters rated at a maximum output power not listed above, the recommended separation distance (d) in meters (m) canbe estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of thetransmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 at 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection fromstructures, objects and people.
* This table is included as a standard requirement for equipment which has been tested to specific test levels and over specificfrquency ranges and been found compliant with regulations.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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IV Equipment Description
The CAIRE HELiOS® Standard and Universal units are thestationary components of the HELiOS® supplementary oxygen
system. The HELiOS® Standard and Universal reservoirs incorporate a stainless steel cryogenic container with the valves,plumbing, and associated hardware required to deliver gaseous oxygen to the patient at near ambient temperature. The
HELiOS® Standard and Universal reservoirs are comprised offour major assemblies, grouped according to function.
1. Cryogenic Container This assembly is a double walledvacuum insulated Dewar for storing liquid oxygen (LOX) atapproximately -173°C/-280°F. The inner vessel is designed
to safely hold liquid oxygen and is protected from over pressurization by the primary relief valve. Vacuum insulation
between the inner and outer vessel keeps outside heat from
causing the cold liquid inside to evaporate.

HELiOS Reservoirs

Figure 3: HELiOS® Standard and Universal
reservoirs components

2. Plumbing System The plumbing system consists of
the warming coil, vent valve, R/E economizer, SRV,
high and low pressure lines, pressure gauge, pressure
regulator(Standard reservoir only), oxygen outlet, and
QDV(fill connector).
3. Shroud Assembly The reservoir unit’s shroud assembly
includes an upper shroud and a lower shroud. The uppershroud is made of durable plastic and designed to protect
the internal components of the plumbing system. The lower
shroud is also made of durable plastic and is designed tostore the condensation collector as well as separate theplumbing system from the cryogenic container.
4. Liquid Content/Level Indicator This system uses differential
pressure to measure the level of LOX remaining in the cryogenic vessel and an electronic (LED) readout to display the
LOX level by pressing the onboard operate button.

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V Theory of Operation

As in all vacuum-insulated cryogenic containers, some liquid(oxygen in this case) is always evaporating into a gas. The rateof generation of this gas, with the flow control valve closed, iscalled the normal evaporation rate (NER). This gas is lost throughthe primary relief valve.

NOTE: In the Standard reservoir, the pressure regulator maintains a constant outlet pressure of 1,5 bar/22 psig as oxygen flow
demands vary and system internal pressure swings between 3,3
bar/48 psig and 1,9 bar/27 psig. In the Universal reservoir, apressure regulator is not required since the system internal pressure swing is much smaller, between 1,8 bar/26 psig and 1,5
bar/22 psig. The economizer valve maintains a constant outletpressure of 1,5 bar/22 psig while gas flows to the patient.
NOTE: In Figure 4, the operating pressure is at or below 1,9
bar/27 psig for Standard reservoir and 1,5 bar/22 psig for
Universal reservoir.
WARNING: Low oxygen flow rates to the patient may result if
CAIRE reservoirs are filled with under-saturated liquid oxygen.

WARNING: HELiOS reservoirs are not equipped with aninternal FCV. Therefore, a patient should NEVER be connected directly to a HELiOS reservoir without the use of an
external FCV, OxiClip™ conserver or a HELiOS portable unit.
Attempting to use a HELiOS reservoir as a direct respiratorydevice without one of these accessories can result
in SERIOUS PERSONAL INJURY.
When the external FCV or HELiOS portable unit is at any setting other than off, and the economizer valve is open (pressure
over 1,9 bar/27 psig for Standard reservoir and 1,5 bar/22 psig
for Universal reservoir), gaseous oxygen is forced from the head
space in the inner vessel, through the economizer valve, to thebreathing coil. This process conserves or “economizes” liquid
oxygen by withdrawing the head gas first, instead of allowing
it to escape through the relief valve. While flowing through thebreathing coil, the cold gaseous oxygen is warmed to near-ambient temperature before being metered and dispensed by the flow
control valve. Whenever gas is removed from the space above
the liquid oxygen (head space), the inner vessel internal pressure
begins to drop slightly. When the pressure drops to 1,9 bar/27
psig (Standard reservoir) or 1,5 bar/22 psig (Universal reservoir),the economizer valve closes, forcing liquid oxygen up the withdrawal tube, through the bypass tee and through the warming
coil where it becomes gas, then through the external FCV or a
HELiOS portable unit, providing gaseous oxygen to the patient.

HELiOS Reservoirs

The HELiOS reservoir provides a source of liquid oxygen to
fill portable units. It also provides gaseous oxygen to a HELiOS
Portable or 1,5 bar/22 psig FCV connected to the oxygen outlet
connector. If all reservoir outlets are closed (Vent Valve, PRV,
SRV, Oxygen Outlet, QDV) with LOX in the unit, then the pressure in the inner vessel will remain near the primary relief valve
setting of less than 3,3 bar/48 psig (Standard Reservoir) or lessthan 1,7 bar/25 psig (Universal Reservoir).

NOTE: In Figure 5 the operating pressure is over 1,9 bar/27 psig
for Standard reservoir,1,5 bar/22 psig for Universal reservoir.

WARNING: The vent valve orifice does not guarantee properly
saturated LOX. The filling source tank must have a minimum
1,6 bar/23 psi to transfill into CAIRE reservoirs or low saturation will occur.

Figure 5
Figure 4
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V Theory of Operation

Internal Pressure Gauge Operation
The HELiOS reservoir internal pressure gauge indicates thestatus of the system headspace pressure. The indicator dial iscalibrated from 0 to 7 bar/0 to 100 psig. The pressure indicator isused to evaluate the reservoir system headspace pressure during afill and during system operation. The pressure indicator does notindicate oxygen outlet pressure.

Figure 6: Standard (L) and Universal (R) Fill Connectors

Contents Level LEDs

Low Battery
LED

Low Contents
LED
Push Button

Figure 7: Liquid Level Indicator(Typical Battery Life is approximately 1 year.)

60

40
3

4
5

1

6

20

2

80

Liquid Contents/Level Indicator Operation
The contents indicator, visible through the upper shroud of thereservoir, measures and displays the amount of liquid oxygen remaining in the HELiOS reservoir. It is powered by a nine-volt alkaline battery offering battery life of approximately 1 year at one
activation per day. The system is based on the principle that thepressure created at the bottom of a tank of liquid is proportional
to the height of the liquid. An electronic pressure transducer
measures the pressure at the bottom of the inner container createdby the level of liquid oxygen. However, this pressure signal isalso a function of gaseous headspace pressure acting on top of theliquid. So the transducer measures the gaseous headspace pressure and subtracts the value from the total pressure at the bottomof the inner container. It sends the resulting electronic signal thatis proportional to the level of liquid oxygen to the circuit board
in the indicator. Eight green LEDs on the indicator display panel
represent the full to empty range of the system. When the patient
depresses the push button, a proportional number of green LEDs
light to represent the relative level of liquid oxygen remaining
in the reservoir. In addition to the green LEDs, a yellow “lowcontents” LED on the contents indicator lights when 3.9 kg/8.5
pounds of liquid oxygen remain. A yellow “low battery” LED
lights when the battery voltage drops below a predeterminedvalue.

HELiOS Reservoirs

HELiOS Standard vs. HELiOS Universal
The main differences between the Standard and Universal reservoirs consist of three components: 1) Standard reservoirs have
RV settings of less than 3,3 bar/48 psig for the PRV and 4,8
bar/70 psig +/- 5% for the SRV, whereas the Universal reservoirs
have RV settings of less than 1,7 bar/25 psig for the PRV and2,1 bar/30 psig +/- 5% for the SRV. 2) Due to the wide range
between the PRV and SRV settings on the Standard reservoir, apressure regulator is used to assist in maintaining proper operating pressure, whereas this range is minimal on the Universal
reservoir and does not require this regulator. 3) Due to the higher
pressure and recessed fill connector on the Standard reservoir,
only HELiOS portable devices can be filled, whereas when using
the Universal reservoir all portable devices in the CAIRE family
can be filled (All HELiOS, Companion, Stroller, Sprint, Spirit
portables).

7
bar
psi

0

10

Figure 8: Internal Pressure Gauge

NOTE: Universal reservoirs manufactured prior to August 2006
were not equipped with internal pressure gauges. In any statement regarding internal pressure, if the unit was manufactured
prior to this date, an external pressure gauge must be used by attaching an external pressure gauge (P/N B-701732-00 or equivalent) to the reservoir oxygen outlet DISS connector.

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V Theory of Operation
The HELiOS Plus (H300) and HELiOS Marathon (H850)
liquid oxygen portable units are manufactured without a Quick
Connect CPC Fitting and its related tubing and fittings. The
purpose of the CPC connector is to allow the portable unit toconnect directly to the HELiOS reservoir, allowing the patient tobreathe directly from the HELiOS reservoir using the conserver
from the HELiOS portable.
		 The CPC Connector is an available, optional, addition
and may be ordered via the CPC Connector Upgrade Kit, PN:
20748595.

For reservoirs manufactured after June 2010, the number begins
with the letters CB signifying the manufacturing location,
followed by the reservoir product code B30, followed by digits
signifying the year of manufacture, followed by a two digit
number to signify the week of the year that the unit was manufactured and ends with digits signifying the unit’s
production number for that week (See Figure 11). For units
manufactured after June 2010, a label containing the serial number is placed on or above the handle of the reservoir. This Serial
Number is crucial if a problem arises with the unit or support
is ever needed through CAIRE Customer Service or Technical
Service.

HELiOS Reservoirs

Using a Reservoir as a Gaseous Source Along With a
HELiOS Portable Unit

To operate the Reservoir as a source of gaseous oxygen using a
HELiOS portable unit, perform the following steps:
1. Verify that there is adequate liquid oxygen in the reservoir
to meet patient breathing needs.
2. Insert the flexible oxygen supply tube connector into thequick connect on the front of the portable and snap it inplace.

4. Verify that the tube connections are leak tight.
5. Place one of the tubes from the dual-lumen oxygen cannulaon the HELiOS Portable oxygen outlet connector (upper
connector). Place the other cannula tube on the sensor connector (lower connector). Adjust the cannula on the face toreceive oxygen comfortably.
6. Set the HELiOS Portable flow control knob to the prescribedoxygen flow setting.
NOTE: When using the HELiOS Marathon portable unit in combination with the reservoir for a gaseous source, the Demandsetting on the Marathon must be used.
Reservoir Serial Number Identification
Prior to June 2010, each HELiOS reservoir is identified by aunique eight-digit serial number. The number contains the year
and calendar day of manufacture, as well as the unit’s production number for that day. The Standard reservoir serial number
is etched into the upper head of the cryogenic container and isvisible when the moisture container is removed. The Universal
reservoir serial number is etched into a reservoir handle bracket.
(See Figure 11).

Figure 9: Quick Connection
on HELiOS Portable

Figure 10: DISS Nut andTailpiece connected toReservoir Outlet

Reservoirs Manufactured before June 2010

99 295 116{{{

3. Locate the oxygen DISS nut and tailpiece assembly attachedto the opposite end of the flexible oxygen supply tube.
Thread the nut and tailpiece assembly onto the reservoir
oxygen outlet connector until secure.

Designates
Year

Designates
Sequential Day ofYear (Jan 1 = 001,
Dec 31 = 365)

Designates
Number of Specific
Unit Produced
that dayReservoirs Manufactured after June 2010

CB B30 10 29 0964
Designates
Designates Designates Designates
Manufacturing Reservoir
Year
Week of
Location
Product CodeYear

Designates
Number ofSpecific Unit
Producedthat Week

Figure 11: Serial Number Identification

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VI
1 Specifications
HELiOS Reservoir Specifications
MODEL

H-36

H-46

U-36

U-46

Volume of LOX (typical)

36 liters/1.27 ft3

46 liters/1.62 ft3

36 liters/1.27 ft3

46 liters/1.62 ft3

Weight of LOX at 24 psig
(166 kPa)
Saturation (typical)

38.6 kg/85 lbs

50.0 kg/110 lbs

38.6 kg/85 lbs

50.0 kg/110 lbs

Gaseous Oxygen Equivalent@ 1atm. and 70°F

29,069 liters/1027 ft3

37,619 liters/1328 ft3

29,069 liters/1027 ft3

37,619 liters/1328 ft3

Height85.1 cm/33.5 in

95.3 cm/37.5 in

85.1 cm/33.5 in

95.3 cm/37.5 in

Diameter

39.1 cm/15.4 in

39.1 cm/15.4 in

39.1 cm/15.4 in

39.1 cm/15.4 in

Empty Weight24.0 kg/53 lbs

27.2 kg/60 lbs

24.0 kg/53 lbs

27.2 kg/60 lbs

Full Weight

62.6 kg/138 lbs

177.1 kg/170 lbs

62.6 kg/138 lbs

77.1 kg/170 lbs

Outlet Pressure

1,5 bar / 21.8psi

1,5 bar / 21.8psi

1,5 bar / 21.8psi

1,5 bar / 21.8psi

Economizer Pressure

1,7-2,1 bar/24.0-30.0 psig

1,7-2,1 bar/24.0-30.0 psig

1,4-1,6 bar/20.5-23.5 psig

1,4-1,6 bar/20.5-23.5 psig

Primary Relief Valve
Opening Pressure

Less than 3,3 bar/48 psig

Less than 3,3 bar/48 psig

Less than 1,7 bar/25 psig

Less than 1,7 bar/25 psig

Primary Relief Valve Reseat
Greater than 2,9 bar/42 psig Greater than 2,9 bar/42 psig Greater than 1,6 bar/23 psig
Pressure

Greater than 1,6 bar/23
psig

Secondary Relief Valve
Opening Pressure
Secondary Relief Valve
Reseat Pressure

4,8 bar/70 psig +/- 5%

4,8 bar/70 psig +/- 5%

2,1 bar/30 psig +/- 5%

Greater than 4,3 bar/63 psig Greater than 4,3 bar/63 psig Greater than 1,9 bar/27 psig

HELiOS Reservoirs

Table #6

2,1 bar/30 psig +/- 5%
Greater than 1,9 bar/27
psig

Normal Evaporation Rate
(NER) (typical).61 kg / 1.34 lbs.61 kg / 1.34 lbs.61 kg / 1.34 lbs.61 kg / 1.34 lbs

Maximum Outlet Flow

10 L/min10 L/min10 L/min10 L/minContents Indicator

Electronic, Differential
Pressure BasedElectronic, Differential
Pressure BasedElectronic, Differential
Pressure BasedElectronic, Differential
Pressure BasedOperating Temperature

10°C to 40°C
10°C to 40°C
10°C to 40°C
95% max. relative humidity 95% max. relative humidity 95% max. relative humidity

10°C to 40°C
95% max. relative
humidity

Storage Temperature-40°C to 70°C
-40°C to 70°C
-40°C to 70°C
95% max. relative humidity 95% max. relative humidity 95% max. relative humidity-40°C to 70°C
95% max. relative
humidityNote:
All specifications are based upon optimum environmental and pressure conditions as stated above.
Listed capacities have incorporated a 2% ullage in compliance with ADR requirements.
At optimum operating conditions, the conversion factor of liquid oxygen to gaseous oxygen is 1:860.
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VII Saturation Principles
Oxygen, like most gases, will condense into a liquid with an increase in pressure or decrease in temperature. As a liquid, oxygen ispale blue in color and is about 860 times as dense as its gaseous form. At atmospheric pressure (14.7 psia), oxygen condenses into its
liquid form at a temperature of about -297°F (-184°C). Liquid oxygen (LOX) is an efficient form of oxygen to meet a patient’s portable, ambulatory oxygen needs. A volume of liquid oxygen, when vaporized, yields about 860 volumes of gaseous oxygen (Figure 2).
As you can see, a relatively small volume of liquid oxygen provides a much larger volume of gaseous oxygen for a patient to use.

HELiOS Reservoirs

Oxygen, in its normal state, is a colorless, tasteless, and odorless gas that is non-flammable, although it greatly accelerates combustionin high concentrations. It constitutes about 21% of the Earth’s atmosphere by volume. Oxygen in higher concentrations is medicallybeneficial to patients suffering from certain respiratory diseases.

In medical liquid oxygen systems, liquid oxygen, and the gaseous oxygen resulting from its vaporization or boiling, is stored underpressure. The elevated pressure, typically 22 psig (152 kPa), enables oxygen to flow to the patient at a selected, prescribed rate. To
sustain this oxygen flow to the patient, the liquid oxygen must be in a state that allows vaporization to readily occur. In other words,
the liquid oxygen must be in a state of saturation. Let’s take a look at what liquid saturation is all about.
A saturated liquid is one that absorbs the maximum amount of heat possible at a given pressure without vaporizing into a gas. If additional heat is added, the saturated liquid begins to vaporize (boil) while remaining at a constant temperature until all of the liquid
is vaporized. A common example of a saturated liquid is water at its boiling point of 212°F (100°C) at sea level. The constant addition of heat to the boiling water does not cause it to become hotter, but instead causes part of the liquid water to turn to water vapor(Figure 12).

Figure 12: Saturated (Boiling) Water at Sea Level
The saturation (boiling) point of a liquid depends not only on temperature but also on pressure. If the pressure in a container of saturated liquid increases, the temperature required for saturation to occur will also increase. This leaves the liquid unsaturated, that is,capable of accepting more heat before it will boil (Figure 13).

Figure 13: Saturated (Boiling) Water at Higher Pressure

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VII
1 Saturation Principles
HELiOS Reservoirs

If the pressure in a container of saturated liquid decreases, the temperature required for saturation to occur will decrease. This leaves
the liquid “super saturated” or too warm. When this occurs, rapid boiling and vaporizing of some of the liquid occurs. The rapid boiling and evaporation of the liquid dissipates the excessive heat until the remaining liquid cools down to the new saturation temperatureassociated with the decreased pressure (Figure 14).

Figure 14: Saturated (Boiling) Water at Lower Pressure
Oxygen, which is normally a gas at atmospheric pressure, changes into liquid form when it is cooled to about -297°F (-183°C) at
atmospheric pressure. It is saturated at this temperature (and pressure) which means it will remain a liquid as long as no additional
heat is added. However, the large quantity of heat present in the atmosphere constantly enters the liquid oxygen and causes it to boil
and vaporize back into a gas. Since it is virtually impossible to keep all of the heat in the atmosphere from entering the liquid oxygen,constant boiling and vaporization occurs.
Now when liquid oxygen is placed in a closed container, the vaporizing gas is trapped and begins to build pressure. As pressure increases above atmospheric pressure, more heat is needed for boiling to occur at the higher pressure. The heat that is constantly available from the atmosphere warms the liquid to a higher temperature where boiling again occurs. The vaporizing gas builds pressure
and the process continues. As the pressure on liquid oxygen builds, the related saturation temperature of the liquid increases proportionally (Figure 15).

Figure 15: Liquid Oxygen Saturation Curve
It is important to maintain liquid oxygen saturation (boiling) at the specified operating pressure of the HELiOS system. As an oxygen
flow demand is put on the system, a slight decrease in pressure occurs due to oxygen withdrawal. The saturated liquid oxygen in thesystem vaporizes enough gaseous oxygen to maintain system operating pressure. This ensures proper oxygen flow to the patient. If
the liquid oxygen saturation temperature is too low, the corresponding lower saturation pressure causes low oxygen flows to the patient.
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VIII Unpacking and Setup
1. Inspect carton for shipping damage. Report any damage tofreight company before signing bill of lading.
2. Check description on carton against your order.
3. Unpack unit, including all accessories and documentation.
4. Set aside packing materials in case unit must be returned to
the factory.

Transport
Specifically designed roller bases are available for moving
CAIRE reservoirs short distances on smooth surfaces. Hand
trucks can also be utilized for transport as well. CAIRE reservoirs may be moved about or transported in a vehicle while full
without damage; however, they should not be dropped, placed on
its side or handled roughly in order to prevent damage.

HELiOS Reservoirs

UnpackingSetup
1. Locate and record the reservoir serial number. Reinstall the
moisture container.
2. Visually inspect the reservoir for damage from improper
handling. Note any dents in the container, cracks in the
shroud, missing or loose hardware, and bent quick disconnect valves.
3. Check the vent valve for smooth operation. If possible,
connect a portable unit to the reservoir to check for smooth
coupling, and to make sure the portable unit is in properalignment with the reservoir when mated and there is nointerference with the shroud or case of portable unit.
4. Verify operation of the level meter by depressing the operatebutton. LEDs will light, displaying the level of liquid oxygen. If the unit is empty, only the leftmost LED should light.
5. Check all labels for damage and wipe away any dust on unit
with a clean, dry, lint-free cloth.
6. Verify the fill connector release button and mechanism
move freely.
7. Verify that a HELiOS vent wrench is available for filling ofreservoir.
8. Specifically designed roller bases are available for transporting CAIRE reservoir units short distances and on smoothsurfaces. Hand trucks may also be used.
NOTE: It is never acceptable to tip the reservoir to one side to“roll” the unit, even if the unit is empty.

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IX Operation
NOTE: The fill source should have the correct fitting (5/8” x 45°
male flare) to connect to transfer line.
1. Fill Source Preparationa. Ensure the source contains a sufficient amount of liquid oxygen to completely fill the reservoir (approximately 120% of
reservoir volume).
b. Ensure the liquid oxygen in the fill source is saturated at 2,43,4 bar (35-50 psig).
NOTE: Proper saturation is critical when filling a CAIRE reservoir. If the fill source is not properly saturated, the process of properly saturating the reservoir will be difficult. If the reservoir is notproperly saturated, the unit will not function correctly resulting ininaccurate flow rates, excessive boil off of liquid, and will cause
portable units which are filled off the reservoir to act in the samemanner. Please refer to Section VII SATURATION PRINCIPLES
to learn more about the importance of proper saturation
2. Fill Procedurea. Required Equipment:o Fill source as outlined above
o Liquid oxygen transfer lineo Female transfer line adapter for top fill reservoirs
o Eye protectiono Pressure gaugeo Insulated gloves
b. Verify that liquid level meter is operating properly. The LED
display should indicate approximate level in unit. The low
battery LED should not be lit.
c. Connect transfer line to fill source. Connect proper transfer
line adapter to transfer line.

g. Fully open HELiOS vent valve.
h. Engage the transfer line to the fill connector on the reservoir
unit by aligning the fill connector on the transfer line directly
over the fill connector on the reservoir and press downward.
Keep downward pressure in the transfer line during the entire
fill process.
i. While filling, throttle the vent valve with the vent valve wrench
as needed to maintain pressure on the internal pressure gauge atapproximately 1,7 bar/24 psig.

HELiOS Reservoirs

f. Weigh unit as required by local and federal standards.

Filling

NOTE: Universal reservoirs manufactured prior to August 2006
were not equipped with internal pressure gauges. In any statement
regarding internal pressure, if the unit was manufactured prior tothis date, an external pressure gauge must be used by attaching an
external pressure gauge (P/N B-701732-00 or equivalent) to thereservoir oxygen outlet DISS connector.
k. When a steady spray of liquid spurts from vent outlet, close
the vent valve completely.
l. Disconnect the transfer line from the reservoir by depressing
the portable release button and lifting the fill adapter straightup.
m. If an external pressure gauge is used, disconnect pressuregauge from oxygen outlet.
CAUTION: Do not allow excessive venting of liquid oxygen
through the vent valve. Prolonged exposure may freeze the valve
in the open position. If the vent valve freezes open, allow thevalve to warm up until it opens and closes freely and repeat thefill process.
n. Verify that all flow rates are within tolerance specificationand that the liquid level meter indicates full.

d. Fully open liquid valve on fill source.
e. Purge transfer line for a minimum of 5 seconds ensuring gas
is safely piped away from operator:
i. Connect transfer hose fill adapter to a securely
mounted mating QDV.
-OR-

		 ii. If the transfer hose adapter is equipped with a male
QDV, push adapter poppet against an unpainted stainlesssteel surface.
NOTE: Purge the transfer line any time fill source valve has beenclosed.
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IX Operation
NOTE: The liquid level indicating system is accurate only after
the vent valve is closed, and the oxygen has stabilized for approximately five minutes.
As noted in the Theory of Operation, HELiOS reservoirs areequipped with digital liquid level meters. In order to obtain aliquid level reading, the technician or end-user should depress
the large circular operate button on the face of the meter. This
will cause the LEDs to quickly flash from right to left across themeter’s perimeter to indicate button activation. The LEDs willthen light from the left to the right, signifying the liquid level inthe cylinder (1 LED for near empty, 8 for full). If the yellow lightbeside the reservoir symbol flashes, then the reservoir is empty.
If the yellow light beside the battery symbol flashes, then the battery for the indicator needs to be replaced.

Table #7 shows the approved cleaning and disinfecting solutions
are acceptable for use with HELiOS reservoirs.
TABLE #7: Recommended Cleaning and Disinfectant Solutions

Cleaning

Disinfecting

Sporicidin Disinfectant Solution

Mild dish washing detergent/warm water solution
Sporicidin Disinfectant Solution

Household Bleach (1:10 dilution with water,
freshly made within 24 hours)

NOTE: After performing the cleaning/disinfecting process, it issuggested to perform the following inspections and testing.

Cleaning and Disinfection

Inspection

To insure proper functioning and end-user safety, CAIRE reservoirs should be cleaned whenever dirt or grime is visually apparent. The unit should be disinfected if required by applicable local
regulations or the home healthcare distributor’s own decontamination schedule.

• Inspect the upper and lower shrouds for cracks, warpage, anddiscoloration.

Preparation• Verify that the Portable release mechanism moves freely andis not worn. Verify that the release button is secure on thelever and is not cracked.

Prior to cleaning or disinfection, the unit should be completely
purged of LOX. The technician should wear appropriate safety
gear when performing the following procedures.
Cleaning
1. Remove the upper shroud and clean the interior and exterior
using only water. Wipe dry with a towel. Use cotton swabs
in tight places. Use Scotch- Brite pad lightly with detergent
to remove scuff marks on the shroud.
2. Clean the contents indicator with a towel moistened with water. Wipe dry.
3. Clean the reservoir plumbing and lower shroud with water.
Dry with a towel and oil-free compressed gas.

HELiOS Reservoirs

Liquid Level Measurement• Verify that the warning labels are present and legible on theupper shroud.

• Verify that the fill connector is not worn or damaged and thatthe poppet is not broken.
• Verify that the vent valve shaft pin and valve stops are notbent or broken.
• Verify that the yellow “low contents” LED lights when thecontents indicator button is depressed (empty unit). Replace
the 9-volt battery if the low battery LED lights.
• Verify that the aluminum tubing is not bent or kinked and thata uniform air gap exists between each coil.
Testing

NOTE: Make sure that the fill connector and vent valve shaft are
thoroughly dry before proceeding.

1. Perform Leak Test.
2. Perform Liquid Oxygen Functional Tests.

NOTE: Only use disinfectants or cleaning agents approved
for use with this equipment by CAIRE such as Sporicidin,
Hydroklean, or others as specified by CAIRE.

3. Perform Gaseous Oxygen Functional Tests.

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IX Operation
HELiOS Reservoirs

Product Disposal
At the end of the unit’s life, all reservoir units must be returned
to a recycling facility in compliance with the Waste Electricaland Electronic Equipment Directive (WEEE), or otherapplicable codes and regulations. Alternatively, CAIRE may becontacted for disposal information.

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X Maintenance (Schedule A, 30 Month)

Schedule A – 30 Month
A. Introduction
Routine maintenance is a series of steps used to assure that
equipment is functioning properly.
1. If a unit fails a given test, one of two things may be done:
a. Refer to Troubleshooting section of this manual.
-or-h. Flow Rate test (RP22).
3. Check Efficiency of Unit:
a. Inspect unit for cold or sweaty condition and for excessive
venting from relief valve (some venting is normal).
b. If the dewar bottle is cold and sweating,and/or there is excessive venting from the relief valve, an NER test should be
performed (RP25)

HELiOS Reservoirs

There are two schedules for routine maintenance which thehome health care distributor may follow. These schedules allow
the distributor maximum flexibility while assuring that equipment is operating properly. The healthcare distributor may follow either Schedule A or Schedule B, or a combination of thetwo schedules.
CAIRE, Inc. recommends returning the unit to a CAIRE service
facility every 10 years for vacuum check and re-evacuation
if necessary.

4. Prepare for Use:a. Empty contents (RP3).
b. Clean and/or disinfect outside of unit following instruction set forth in the Operation section.

b. Return the unit to CAIRE, Inc. for repair.
2. Schedule – Maximum of 30 months between routine
mainte-nance testing. Unit should be tested whenever a
problem is suspected.
B. Procedure
Follow the steps in order listed. If the unit fails any step, refer toTroubleshooting section of this manual.
1. Visual Inspection:
a. Remove any LOX prior to maintenance (RP3).
b. Look for damaged or missing parts.
c. Verify the meter reads empty (one LED) and that the low
battery LED is not lit.
2. Component Test:
a. Remove shroud (RP5).
b. Perform Leak Test (RP 2)
c. Perform PRV test (RP14).
d. Perform SRV test (RP15).
e. Pressure Retention Test (RP17).
f. Replace shroud (RP5).
g. Liquid Contents/Level Indicator Test (RP6).

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1
Step

5 Year Service Life

1

LOX Purged From Reservoir (Repair Procedure RP3)

Performed or Verified By/Date2

Inpection for Damaged/Missing Parts

Performed or Verified By/Date3

LED on Level Meter Reading Empty (One LED) and the Low
Battery LED is Not Illuminated

Performed or Verified By/Date

4

Remove Shroud (Repair Procedure RP5)

Performed or Verified By/Date5

Perform Leak Test (Repair Procedure RP2)

Performed or Verified By/Date6

Perform PRV Test (Repair Procedure RP14)

Performed or Verified By/Date

Inspection
1

Inspection
2

Inspection
3

Inspection
4

NA

NA

NA

NA

Inspection
5

HELiOS Reservoirs

Schedule A (30-Month) Maintenance Checklist

PRV Crack Pressure
PRV Reseat Pressure

7

Perform SRV Test (Repair Procedure RP15)

Performed or Verified By/Date
SRV Crack Pressure
SRV Reseat Pressure

8

Liquid Contents/Level Indicator Test (Repair Procedure RP6) Performed or Verified By/Date
Liquid Contents/Level Indicator Display With 9-11kg (20-25lbs) of LOX

9Pressure Retention Test (Repair Procedure RP17)

Performed or Verified By/Date
Internal Pressure after 10 Minutes
Internal Pressure after 60 Minutes

10

Replace Shourd (Repair Procedure RP5)

Performed or Verified By/Date

11

Flow Rate Test (Repair Procedure RP22)

Performed or Verified By/Date
Flow Rate at:OFF

Flow Rate at:

0.12

Flow Rate at:

0.25

Flow Rate at:

0.5

Flow Rate at:

0.75

Flow Rate at:

1.00

Flow Rate at:

1.50

Flow Rate at:

2.00

Flow Rate at:

2.50

Flow Rate at:

3.00

Flow Rate at:

3.50

Flow Rate at:

4.00

Flow Rate at:

5.00

Flow Rate at:

6.00

Flow Rate at:

8.00

Flow Rate at:

10.00

12

Inspect for Cold or Sweaty conditon/ Excessive Venting
from RV

Performed or Verified By/Date

13

Perform NER Test (Repair Procedure RP25)

Performed or Verified By/Date

14

Empty Contents from Reservoir (Repair Procedure RP3)

Performed or Verified By/Date

15

Clean and/or Disenfect Outside of Unit

Performed or Verified By/Date16

10 Year Vacuum Check

Performed or Verified By/Date

NER Results

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X Maintenance (Schedule B, Continuous Pre and Post Fill Inspection)
A. Introduction
Continuous maintenance is a set of tests and inspections done
periodically to ensure equipment is functioning properly. It canbe performed by drivers or other personnel while the equipment is in service.
1. If a unit fails a given test, it should be taken out of service
and sent to the Repair Center/Department for further inspection.
2. Schedule – Checks should be made before and after thedriver fills a unit at a patient location.

e. Visible dirt or contaminants inside and outside of theupper shroud, as well as inside and outside of the condensate
collectorf.

Presence of all required labels

g. If LOX is still present in the unit, inspect for heavy frost
or condensation on the exterior of the unit, which would indicate poor vacuum
h. Vent valve functionality (all parts are present and thevalve functions as it should)
C. Post Fill Procedure
1. Visually verify:

Pre Fill Procedurea.

QDV poppet is closed and not leaking

1. Visually inspect for:b.

Vent valve is not leaking

B.

HELiOS Reservoirs

Schedule B – Continuous Pre and Post Fill Inspection

c. No heavy frost or condensation is present on theexterior of the unita.

Broken shrouds or shroud componentsb.

QDV deformationc.

Liquid Contents/Level Indicator functionalityd. Liquid Level Contents/Indicator reads the accurate
amountd.

Cryogenic reservoir damage (dents, dings)

e.

Pressure gauge is reading accurate pressure

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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1
Pre Fill Visual Inspection
1

Broken Shroud or Shroud Components

Verified By/Date2

QDV Deformation

Verified By/Date3

Liquid Contents/Level Indicator Functionality

Verified By/Date

4

Cryogenic Reservoir Damage (Dents,Dings)

Verified By/Date

5

Visible Dirt or Contamination Inside and/or Outside of the Upper
Shroud, as well as Inside and/or Outside of the Condensate Collector

Verified By/Date

6

Presence of All Required Labels

Verified By/Date7

If LOX is present in Unit, Inspect for Heavy Frost or Condnesation on
the Exterior of the Unit, Which Would Indicate Poor Vacuum

Verified By/Date

8

Vent Valve Functionality Ensuring that All Parts are Present and the
Valve Functions as it Should

Verified By/Date

HELiOS Reservoirs

Schedule B (Continuous Pre and Post Fill Inspection) Maintenance Checklist

Post Fill Visual Inspection
1

QDV Poppet is Closed and Not Leaking

Verified By/Date

2

Vent Valve is Not Leaking

Verified By/Date

3

No Heavy Frost or Condensation is Present on the Exterior of the Unit

Verified By/Date

4

Liquid Level Contents/Indicator Reads the Accurate Amount

Verified By/Date

5

Pressure Gauge is Reading Accurate Pressure

Verified By/Date

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
A.
B.
C.

Introduction.........................................................................................................................25
Troubleshooting Charts.......................................................................................................26
Repair Procedures
RP1
General..............................................................................................................30
RP2
Leak Test...........................................................................................................30
RP3
Emptying/Purging Reservoir RR......................................................................31
RP4
Condensation Collector RR..............................................................................32
RP5
Shroud Assembly RR........................................................................................32
RP6
Liquid Contents/Level Indicator Test...............................................................34
RP7
Liquid Contents/Level Indicator RR.................................................................34
RP8
Liquid Contents/Level Indicator Battery RR....................................................34
RP9
Purging Liquid Contents/Level Indicator RR...................................................35
RP10Internal Pressure Gauge Test............................................................................35
RP11Internal Pressure Regulator Test (Standard HELiOS Reservoir Only).............36
RP12Internal Pressure Gauge RR..............................................................................36
RP13Internal Pressure Regulator RR (Standard HELiOS Reservoir Only)..............36
RP14
PRV Test ..........................................................................................................37
RP15
SRV Test...........................................................................................................38
RP16
PRV, SRV, R/E Valve RR ...............................................................................39
RP17
Pressure Retention Test.....................................................................................39
RP18
Warming Coil Assembly RR............................................................................40
RP19
Vent Valve RR..................................................................................................40
RP20
Fill Connector Release Assembly RR...............................................................41
RP21
QDV Assembly RR...........................................................................................41
RP22
Flow Rate Test..................................................................................................42
RP23
Operating Pressure Test....................................................................................42
RP24
Economizer Test...............................................................................................43
RP25
NER Test...........................................................................................................43
RP26
Oxygen Outlet Block RR..................................................................................43

HELiOS Reservoirs

Table of Contents

Introduction
1. These procedures are designed to be performed only by qualified personnel with proper equipment.
2. Any failure during routine maintenance checks will refer you to this section. See troubleshooting chart for appropriate
procedure.

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XI Troubleshooting & Repair Procedures
When more than one probable cause is identified, the causes are listed in order of most likely to least likely reasons for the problem.

Table 8Symptom

1. Liquid oxygen leaks fromfill connector after fill.

Probable CauseHELiOS Reservoirs

Table 8 below provides troubleshooting procedures for the HELiOS reservoir. This guide is not all-inclusive but is intended to serve
as a general outline for solving operational problems. The table describes symptoms, identifies probable causes, and suggests corrective actions.

Corrective Action

a. Ice crystal preventing proper closure ofpoppet.
b. Damaged poppet or fill connector.

a. If minor leak, engage and disengage mating
fill connectors several times to dislodge ice
crystal. If this fails or is a major leak, ventpressure in reservoir to stop leak by opening
vent valve.
b. Examine poppet and fill connector. If
damaged, replace fill connector.

2. Liquid oxygen leaks from a. Lip seal in female fill connector cracked ordamaged.
engaged fill connector during fill.

a. Replace lip seal.

3. Unable to disconnecttransfer line (or Portable)from reservoir after fill.

a. Fill connectors frozen together due to presence of moisture.

a. Close liquid valve (or vent valve on portable) and allow transfer line (or portable) tosit until fill connectors are warm enough todisconnect. (Fill connectors should be dried
with lint-free cloth before filling).

4. Excessively long fill timea. Vent valve not fully open.
b. LOX in source tank is either under or oversaturated.
c. Fill connector not opening properly.

a. Rotate vent wrench counterclockwise until it
stops.
b. Allow LOX to saturate to proper pressure.
c. Check fill connector for damage; make surefill connectors fully engage.

5. Low pressure reading on
reservoir pressure gauge(pressure reads less than
1,7 bar/24 psig).

a. Vent valve not completely closed or leaking.
b. Reservoir filled with liquid oxygen atincorrect saturation pressure.
c. Leak at plumbing connection.
d. Damaged pressure indicator.
e. Economizer valve stuck in open state(problem noticeable only during oxygen
flow demand).

a. Close vent valve. Leak test valve outlet andstem. Replace or repair as needed.
b. Allow LOX to saturate to proper pressurec. Perform leak test. Repair as needed.
d. Perform Pressure Indicator Test.
e. Perform Economizer Test.

6. Low pressure at reservoir
oxygen outlet (pressure
is less than 1,4 bar/20.5psig).

a. Vent valve not completely closed or leaking.
b. Reservoir filled with liquid oxygen atincorrect saturation pressure.
c. Leak at plumbing connection.
d. Economizer valve stuck in open state(problem noticeable only during oxygen
flow demand).

a. Close vent valve. Leak test valve outlet andstem.
b. Allow LOX to saturate to proper pressure.
c. Perform leak test. Repair as needed.
d. Perform Economizer Test.
e. Test pressure regulator and adjust if needed(Standard reservoir only).

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI
1 Troubleshooting & Repair Procedures
Symptom

7. High pressure at reservoir
oxygen outlet.

Probable Cause

Corrective Action

a. Universal reservoir primary relief valve
setting too high or relief valve operating
improperly (no flow condition).
b. Universal reservoir economizer valve stuckin closed state (problem noticeable only
during oxygen flow demand).
c. Container vacuum loss.
d. Standard reservoir pressure regulator out ofadjustment or malfunctioning.

b. Perform primary relief valve test (Contact
Technical Service if faulty).
b. Perform Economizer Test (Contact Technical
Service if faulty).
c. Perform NER Test.
d. Test pressure regulator and adjust as needed(Standard reservoir only).

8. Low flow at oxygen outlet. a. Low pressure at oxygen outlet.
b. Partial obstruction of flow restrictor connector.
c. Partial obstruction in liquid withdrawal tube
or warming coil.

a. See Symptoms 5 and 6.
b. Clean or replace flow restrictor connector.
c. Check liquid withdrawal tube and warming
coil for blockage. Clean or replace as needed.

9. No flow at oxygen outlet.

a. Reservoir is empty.
b. Zero head pressure caused by major leak(vent valve open, relief valve malfunction,etc.).
c. Total obstruction in liquid withdrawal tube,
warming coil, flow restrictor connector, orpressure regulator.

a. Perform fill procedure.
b. Perform leak test. Repair as needed.
c. Locate obstruction and clean or replacecomponents as needed.

10. Contents indicator reads
incorrectly.

a. Battery voltage low.
b. Leak in sensing tubes or fittings.
c. Flexible contents indicator pressure sense
tube pinched.
d. Ice blockage in contents indicator (liquid)pressure sense tube.
e. Contents indicator electronics malfunction.

a. Replace 9-volt battery.
b. Perform leak test. Repair as needed.
c. Visually inspect flexible pressure sense tubes
and remove pinching condition.
d. Perform contents indicator liquid sense tube
purge procedure.
e. Replace contents indicator module.

11. High product loss rate.

a. Container vacuum loss.
b. Leak in tubing or connections.

a. Perform NER Test.
b. Perform leak test. Repair as needed.

HELiOS Reservoirs

Table 8 (cont.)

NOTE: Be aware of a non-removable twisted
copper wire inserted into warming coil nearits inlet.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
Indicator
1 LED On

Pressure Good
Retention
Test

Good

Bad

Replace
DefectivePart

Low
Battery
LED

Yes

No

Good

RemoveShroudTest
ReliefValvesBad

Fill Unit
From
Properly
Saturated
Source

QDV
Leaks
DuringFill
Unable to No
Disconnect
Transfill Line(or Portable)

No

QDV
Leaks
After
Fill

Yes

HELiOS Reservoirs

VisualNo
Yes
Plumbing
Leak Test

Yes
Replace Lip
Seal on Fill
Adapter

Bad
Replace
Battery

RepairLeak

Purge
Contents
Indicator

Close Fill
Valve onSource andAllow toWarm Until
Free

Yes

Continue
Filling Unit

Replace
ReliefValvesYes

Meter 1
LED OnThawedSpray N2 or O2
Dry Gas on
Poppet toThaw
Ice Crystal

No

No

Replace Contents
Indicator

Engage andDisengage
Mating Fill
AdpaterTo
Dislodge Ice
CrystalSealedNo

ReplaceQDVHELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
Perform
OutletPressure
Test

AttachExternal
FCV

Reassemble
ShroudSuspected
Poor NER

Good

Yes

Perform
Flow Test

Bad

No

1. Empty
Dewar
2. Clean
3. FileRecords
4. Returnunit toService

Perform
PNER Test

Good

HELiOS Reservoirs

No

Allow Unit tosit
Undisturbed
for 1.5 Hours
After Fill

Bad

Replace
Reservoir
AdjustPressure
Regulator(Standard
Reservoir
Only)

Bad

VerifyInternal
PressureContact
Caire
RegardingRepairTest Flow
Meter

Good

Bad

Test
Economizer
Valve

Good

Remove External
FCV and Allow
Unit to Sit for 24
Hrs

Bad

Replace
Flow Meter

Replace
External FCV

Bad

Empty
Reservoir

Replace
Economizer

Fill Unit

To use the Troubleshooting Chart:• Start at the upper left corner.
• The top line shows the steps of routine maintenance.
• Unless otherwise noted by the arrows, the flow through the chart is down or to the right.
HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
RP2 – Leak Test

The following procedures have been carefully prepared to allow
proper removal and replacement of defective components andshould be used in conjunction with the Troubleshooting Chart andthe tests in this section.

1. Attach the pressurizing fixture to the fill connector on thereservoir unit and secure it with the attached strap.

CAUTION: When replacing components, make sure the newpart is oriented exactly the same as the original part prior to
installation.
CAUTION: Some components require a specific amount of
torque when assembling. Follow torque requirements where
specified.
NOTE: All replacement parts must be factory approved, cleaned
for oxygen service, and stored in sealed plastic bags. The repair
area must be clean and separate from other areas. Room air should
be filtered, and free from dust, soot, and other contaminants.
NOTE: When replacing components with pipe threads, use PTFE
tape thread sealant. Apply two rounds of PTFE tape to threads
near end of component, avoiding first thread.
NOTE: When assembling new compression fittings, tighten 1/8”,
1/4” and 1/2” nuts eight flats past finger tight and 3/16” nuts fiveflats past finger tight. When reassembling previously used compression fittings, tighten nuts one to two flats past finger tight.

HELiOS Reservoirs

RP1 – General

2. If the reservoir contains liquid oxygen, verify that it is pressurized between:a. For HELiOS Standard Reservoir:
i. 1,7-3,3 bar/24-48 psig
b. For HELiOS Universal Reservoir:
i. 1,4-1,7 bar/20.5-25 psig
3. If the reservoir does not contain liquid oxygen, connect anadjustable 0 to 100 psig (0 to 690 kPa) source of gaseous
oxygen to the DISS oxygen inlet on the pressurizing fixture.
Pressurize the reservoir with gaseous oxygen to:a. For HELiOS Standard Reservoir:
i. 2,8bar/40 psig
b. For HELiOS Universal Reservoir:
i. 1,2 bar/22 psig
4. Use Snoop to test all reservoir fittings and connections.
5. Place a finger wetted with Snoop lightly against the ventvalve outlet to test for leakage.
6. Place a finger wetted with Snoop lightly against the DISS
oxygen outlet to test for leakage.
NOTE: When using Snoop on the stem of the vent valve, be sure
to blow it dry with gaseous oxygen or nitrogen before and aftertest.
7. Disconnect and remove the pressurizing fixture from the reservoir fill connector.
8. Apply Snoop to the fill connector poppet and check for leakage.
9. Use dry Nitrogen or Oxygen gas to dry Snoop off poppet.
NOTE: A small amount of leakage around the poppet of the malefill connector is acceptable. Acceptable leaks appear as white,foam-like bubbles in the liquid leak detector. If the bubbles created by the leak detector are considerably large, make necessary
repairs to the male fill connector.
10. Make repairs to leaking fittings or connections as needed
and perform leak check on those fittings again.

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XI Troubleshooting & Repair Procedures
HELiOS Reservoirs

RP3 – Emptying/Purging Reservoir
1. Connect a pressure regulator to oxygen or nitrogen gas
source.
NOTE: Ensure that the area in which the following procedure will
be performed is properly ventilated and free of ignition sources.
NOTE: Ensure vent valve on reservoir is placed in a manner so
as not to vent in the direction of technician or individuals nearby
or walking by.
2. Connect a pneumatic hose to the regulator and a transfer fill
adapter with relief valve to the opposite end of the pneumatic hose.
3. Open the main valve on gas source.
4. Open vent valve on reservoir to allow slow venting.
NOTE: If the reservoir is near full of LOX, some LOX may momentarily spray from vent valve.
5. Adjust regulator to a pressure setting that is slightly higher
than the internal pressure of the unit (Example: If the internal pressure gauge reads 1,7 bar/24 psig, adjust the regulator
attached to the gas source to approximately 1,8-1,9 bar/2628 psig).
6. Attach the transfer fill adapter to the QDV on the reservoir.
7. Allow unit to purge until the exhaust that is released out ofthe vent valve is clear and the internal components are freeof frost. (Approximately 45 minutes)
8. Remove transfer fill adapter from reservoir.
NOTE: This process can be time consuming depending on thelevel of LOX in the unit. The fill adapter can be secured to thereservoir using straps, bungee cord, etc., as long as the vent valve
is open.
9. Close main valve on gas source.

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XI Troubleshooting & Repair Procedures
1. The condensation collector is located below the uppershroud, inside the lower shroud and is in line with the internal pressure gauge.
2. Pull the collector out of the lower shroud to remove any condensation
3. To reinstall the collector, slide into the lower shroud.

RP5 – Shroud Assembly RR
1. Upper Shroud:a. Remove the two pan head screws from the topside of
the upper shroud.
b. Carefully remove the upper shroud by lifting it up andover the plumbing components.
c. To reinstall or replace the upper shroud, reverse theabove procedures.
NOTE: New labels must be installed any time the upper shroud is
replaced. Make sure that the front warning label is the correct one
for the model of reservoir it is to be used on.
NOTE: Be sure to align the upper shroud so that the access holes
are positioned directly over the corresponding reservoir plumbing
components. Also, be sure that the upper shroud is seated uniformly on the lower shroud lip.
2. Lower Shroud Removal:a.

Remove the upper shroud (Section RP4).

b. Slide the press-on tubing clamp back and disconnect theflexible black “LO” pressure sense tube from the barbed fitting on the R/E valve.

e. Pull the aluminum warming coil tube away from the tee
and carefully guide the small Teflon liquid withdrawal tube
out of the aluminum tube.
f. Use a 5/32-in. hex key wrench to remove the four
socket head cap screws that secure the mounting bracket tothe manifold flange.
g. Remove the mounting bracket and attached components.

HELiOS Reservoirs

RP4 – Condensation Collector RR

h. Use a ¾-in. open-end wrench to remove the vent valve
from the threaded manifold extension tube. Place the wrenchon the valve hex flats closest to the manifold extension tube
to prevent disassembly of the valve.
i. Use a 9/16-in. open end wrench to remove the economizer tube compression nut from the liquid withdrawal tee.
j. Use a ½-in. open end wrench to remove the economizer
tube inverted compression nut from the R/E valve.
k.

Remove the economizer tube.

l. Use a ¾-in. open-end wrench to remove the R/E valve
assembly from the threaded manifold extension tube.
m. Remove the umbrella seal by carefully working it up
over the manifold flange and tubes.
n. Remove the lower shroud by carefully working it up
over the manifold flange and tubes.
3. Lower Shroud Reinstall or Replacement:a. Install the lower shroud over the manifold flange andtubes.
b. Pull the flexible red “HI” pressure sense tube up
through the 3/16 in. diameter hole in the lower shroud tray
(not the larger moisture drain hole).
c. Position the red tube in the notch molded into the sideof the oval opening in the center of the shroud.

c. Disconnect the flexible red “HI” pressure sense tube
from the “HI” pressure sense barbed fitting on the contents
indicator.

NOTE: On early version lower shrouds without the 3/16 in. hole,pull the red flexible contents indicator tube up through the oval
opening in the center of the shroud.

d. While using a 9/16-in. open end wrench to hold theliquid withdrawal tee stationary, use a second 9/16-in. open
end wrench to remove the warming coil compression nut
from the tee.

d. Position the embossed 1-in. (2.5-cm) circular index
mark on the top of the lower shroud directly over the vacuum port on the container.
e. Ensure that the container vacuum port is captured between two parallel vertical ribs on the bottom of the lower
shroud.
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XI Troubleshooting & Repair Procedures
u. Tighten the warming coil compression nut using two
9/16-in. open-end wrenches.

g. Install the umbrella shield over the manifold flange andtubes.

v. Connect the flexible black (gas) pressure sense tube
from the contents indicator “LO” circuit to the barbed fitting
on the R/E valve.

h. Pull it down the neck of the container until it sits snugly
over the oval opening in the center of the lower shroud.

w. Slide the press-on tubing clamp onto the barbed fitting.

i. Apply Teflon tape sealant to the threaded manifold tube
facing the embossed circular index mark on the top of thelower shroud.

x. Connect the flexible red (liquid) pressure sense tube
from the container sense line to the “liquid” pressure sense
fitting on the contents indicator.

j. Install the R/E valve assembly on the manifold tube andtighten so that the secondary relief valve is in a vertical, up
position.

y.

HELiOS Reservoirs

f. Use a flashlight and look to the right through the moisture container opening to verify capture of the vacuum port.

Install the upper shroud per RP2.

NOTE: On early version lower shrouds without the 3/16 in. (0.5cm) hole, make sure that the red, flexible contents indicator tubecomes out of the oval opening in the center of the shroud and isunderneath the umbrella seal.
k. Install the end of the economizer tube with the inverted
compression nut in the bottom port of the R/E valve.
l. Install the opposite end of the economizer tube in theside port of the liquid withdrawal tee. Make sure both tube
ends are aligned properly and then tighten both compression
nuts.
m. Apply Teflon tape sealant to the threaded manifold tube
opposite the R/E valve.
n. Install the vent valve on the manifold tube with thevalve flow direction arrow pointing away from the manifold.
o. Tighten so that the valve stem is in a vertical, up position.
p. Position the mounting bracket with attached components over the manifold so that the release lever is over the
R/E valve.
q. Carefully insert the Teflon liquid withdrawal tube into
the open end of the aluminum warming coil tube. Be careful
not to kink or scrape the Teflon tube.
r. Align the warming coil tube in the liquid withdrawal tee
port and finger tighten the compression nut.
s.

Align the mounting bracket on the manifold flange.

t. Install the four socket head cap screws and tighten witha 5/32-in. hex key wrench.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
1. Press the blue button on the contents indicator and verify
that the yellow, low contents LED lights when the liquid
oxygen contents is 3.9 kg /8.5 lbs or less.
2. Fill the reservoir so that it contains 9 to 11 kg/20 to 25 lbs ofliquid oxygen.
3. After five minutes, press the blue button and verify that the
number of green LEDs lit on the display correspond to theinformation in Table 9 below. The yellow, low contents
LED should be off.
Table 9Contents Indicator

4. Remove the flexible red “HI” pressure sense tube from thebarbed fitting on the contents indicator.
5. To replace the contents indicator, reverse the above procedures.

RP8 – Liquid Contents/Level Indicator Battery RR

HELiOS Reservoirs

RP6 – Liquid Contents/Level Indicator Test

1. Insert a coin into the battery door slot at the rear of the contents indicator module.
2. Lift the coin up to remove the door.
3. Carefully disengage the battery from the battery clip.

HELiOS RESERVOIR

No. ofGreen
LED’s onYellow LED
Status0

Yellow

0.0-3.9(0.0-8.5)

1Off

3.9-8.3(8.5-18.2)

2

Off

8.3-12.7 (18.2-28.0)

3

Off

12.7-17.1 (28.0-37.6)

4

Off

17.1-21.5 (37.6-47.4)

5

Off

21.5-25.9 (47.4-57.1)

6

Off

25.9-30.0 (57.1-66.8)

7

Off

30.3-34.7 (66.8-76.5)

8

Off>34.7 (76.5)

Weight of LOX remaining inReservoir kg (LBS)

4. Install a new 9-volt alkaline battery, taking care to observe
proper battery polarity.
5. Reverse the procedures above to reinstall the battery.

RP7 – Liquid Contents/Level Indicator RR
1. Remove upper shroud per RP5.
CAUTION: Damage to contents/level indicator or barbed fittings
can occur. Vent reservoir pressure before removing either contents indicator tube. Use care when removing flexible tubes frombarbed fittings or contents/level indicator
2. Lift the contents/level indicator module off of the mounting
bracket and carefully turn it over.
3. Remove the flexible black “LO” pressure sense tube fromthe barbed fitting on the contents indicator.
HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
RP10 – Internal Pressure Gauge Test

1. Ensure reservoir is empty, warm and free of internal pressure per RP3.

1. Engage the pressurizing fixture to the fill connector on thereservoir and secure it with the attached strap.

2. Remove the upper shroud per RP5.

2. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the Diameter Index Safety System (DISS) oxygen
inlet on the pressurizing fixture.

3. Use the vent wrench to open the vent valve on the reservoir
unit.
4. Connect a pressurizing fixture (P/N B-701731-00 or similar)
to the fill connector on the reservoir unit.
5. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the DISS oxygen inlet on the fixture.
6. Adjust the regulator until the gauge on the pressurizing fixture reads approximately 1,0 bar/15 psig.

3. For HELiOS Universal Reservoir:
a. Slowly pressurize the reservoir until the needle of thereservoir pressure gauge lines up with the 20 psig mark.
b. Verify that the reading on the pressurizing fixture gauge
is 1,2-1,5 bar/18-22 psig.
4. For HELiOS Standard Reservoir:

7. With only the vent valve open, allow the system to purge forabout 45 minutes.

a. Slowly increase the reservoir pressure until the needleof the pressure indicator lines up with the 2,1 bar/31 psig.

8. Disconnect the pressurizing fixture.

b. Verify that the reading on the pressurizing fixture gauge
is 1,9-2,3 bar/27-33 psig.

9. With no pressure in the unit, disconnect both the flexible
black (gas) pressure sense tube and the flexible red (liquid)pressure sense tube from the contents indicator. Using a wiretie, lightly secure the tubes to the vent valve to prevent themfrom moving around.

HELiOS Reservoirs

RP9 – Purging Liquid Contents/Level Indicator RR

NOTE: It may be necessary to tap on top of the indicator withyour finger to assure that the indicator is operating properly.
CAUTION: Damage to the contents indicator can occur.
Disconnect both contents indicator tubes before pressurizing thereservoir. Vent the reservoir before connecting or disconnecting
indicator tubes.
10. Close the vent valve. Reconnect the pressurizing fixture andadjust the regulator until the pressurizing fixture reads approximately 1,0 bar/15 psig.
11. Allow an additional 15 minutes for gas to flow through andpurge the contents indicator tubes.
12. Disconnect the pressurizing fixture and open the reservoir
vent valve.
13. Reconnect both pressure sense tubes to the contents indicator.
14. Perform the contents indicator test.

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XI Troubleshooting & Repair Procedures
RP13 – Internal Pressure Regulator RR (Standard HELiOS
Reservoir Only)

1. Engage the pressurizing fixture to the fill connector on thereservoir and secure it with the attach strap.

1. Remove upper shroud per RP5.
2. Remove the warming coil.

2. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the Diameter Index Safety System (DISS) oxygen
inlet on the pressurizing fixture.

3. Use a ½ -in. open-end wrench to remove the DISS outlet extension from the regulator outlet.

3. Slowly increase the pressure in the reservoir to 2,8 bar/40
psig.

4. Use a 9/16-in. open-end wrench to remove the flow restrictor connector from the regulator inlet.

4. Attach an oxygen wye outlet adapter with two DISS demand
check valve outlets to the reservoir DISS oxygen outlet.

5. Pull down on the regulator adjustment knob to release theknob locking mechanism.

5. Attach an external 1,5 bar/22 psig FCV (P/N B-701655FLO or equivalent) to one of the wye outlets.

6. Use 10-in. arc-joint pliers to remove the serrated plastic
retaining nut that secures the regulator to the mounting
bracket.

6. Attach a test pressure gauge with tubing adapter to the otherwye outlet.
7. Set the external FCV to 0.

7. Lift up on the regulator to allow the mounting bracket topass between the regulator knob and bonnet as you removeit.

8. Verify that the test pressure gauge connected to the wye outlet reads 1,4-1,6 bar/20.5-23.5 psig.

8. Reverse the procedures above to reinstall the internal pressure regulator.

9. Set the external FCV to 6 L/min.

9. To adjust the internal pressure regulator, attach the pressurizing fixture to the fill connector on the reservoir and secure
it with the attached strap.

10. Verify that the test pressure gauge connected to the wye outlet still reads 1,4-1,6 bar/20.5-23.5 psig.

RP12 – Internal Pressure Gauge RR
1. Remove the upper shroud per RP5.
2. Carefully pull the pressure indicator up and out of the grommet in the mounting bracket.
3. Slide the press-on tubing clamp back and disconnect theflexible black “LO” pressure sense tube from the barbed fitting on the pressure indicator.
4. Use a ¼-in. open-end wrench to remove the barbed fittingfrom the pressure indicator.
5. Reverse the procedures above to reinstall the internal pressure gauge.

HELiOS Reservoirs

RP11 – Internal Pressure Regulator Test (Standard HELiOS
Reservoir Only)

10. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the DISS oxygen inlet on the pressurizing fixture.
11. Slowly increase the pressure in the reservoir to
2,8 bar/40 psig.
12. Attach an oxygen wye outlet adapter with two DISS demand
check valve outlets to the reservoir DISS oxygen outlet.
13. Attach a 1,5 bar/22 psig external FCV (P/N B-701655-FLO)
to one of the wye outlets.
14. Attach a test pressure gauge with tubing adapter to the otherwye outlet.
15. Set a 6 L/min flow on the 1,5 bar/22 psig external FCV.
16. Reach in from below the vent valve and grasp the pressure
regulator adjustment knob.
17. Pull the knob straight down until you hear it “click”.
18. Turn the knob clockwise (looking at the regulator from theknob end) to increase the pressure.
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XI Troubleshooting & Repair Procedures
11. For HELiOS Standard Reservoir:

20. The pressure reading on the test pressure gauge should be
1,4-1,6 bar/20.5-23.5 psig.

a. Verify that the PRV closes (bubbles begin to diminish) at
a pressure greater than 2,9 bar/42 psig.

21. Once the pressure regulator setting is within specifications,push the knob up until you hear it “click”, locking the adjustment knob.

b. If the opening pressure is not within the acceptable range,
replace the R/E valve.

RP14 – PRV Test
1. Remove the upper shroud per RP5.
2. Engage the pressurizing fixture to the fill connector on thereservoir and secure it with the attached strap.
3. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the DISS oxygen inlet on the pressurizing fixture.
4. The PRV vents through the barbed fitting in the side of theR/E valve.

12. For HELiOS Universal Reservoir:

HELiOS Reservoirs

19. Turn the knob counter-clockwise to decrease the pressure.

a. Verify that the PRV closes (bubbles begin to diminish) at
a pressure greater than 1,6 bar/23 psig.
b. If the PRV is suspected to be malfunctioning, replace theR/E valve.
13. If either the opening pressure or closing pressure readings
PRV do not meet the specifications stated in previous steps,
replace the R/E valve.
14. Disconnect the pressurizing fixture and open the reservoir
vent valve to reduce the pressure below 1,4 bar/20 psig.

5. Attach one end of a 1/8-in. I.D. flexible tube to the barbed
fitting.
6. Insert the other end of the tube into a clear jar of water.
7. Slowly pressurize the reservoir until a continuous stream ofsmall bubbles first appears in the jar of water.
8. For HELiOS Standard Reservoir:
a. Verify that the PRV opens (bubbles) at less than 3,3
bar/48 psig.
b. If the opening pressure is not within the acceptable
range, replace the R/E valve.
9. For HELiOS Universal Reservoir:
a. Verify that the PRV opens (bubbles) at less than 1,7
bar/25 psig.
b. If the PRV is suspected to be malfunctioning, replace
the R/E valve.
10. Slowly reduce the pressure within the reservoir until thecontinuous stream of bubbles begin to diminish.

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XI Troubleshooting & Repair Procedures
1. Remove upper shroud per RP5.
2. Engage the pressurizing fixture to the fill connector on thereservoir and secure it with the attached strap.
3. Attach an adjustable 0-6,9 bar/0-100 psig source of gaseous
oxygen to the DISS oxygen inlet on the pressurizing fixture.
4. Obtain a type of temporary clamp.

NOTE: If the secondary relief valve does not close within thisrange the first time, repeat the SRV testing. If it fails to open
within the acceptable range the second time, replace the SRV
valve.
12. Disconnect the pressurizing fixture and open the reservoir
vent valve to reduce the pressure below 1,4 bar/20 psig.
13. Remove the clamp blocking the R/E valve vent port.

HELiOS Reservoirs

RP15 – SRV Test

5. Position the movable bar clamp arm over the R/E valve ventbarbed fitting and position the fixed bar clamp arm on theedge of the mounting bracket window cutout.
6. Tighten the clamp to seal the vent port.
7. For HELiOS Standard Reservoir:
a. Slowly pressurize the reservoir by adjusting the oxygen
source regulator.
b. Verify that the secondary relief valve opens (audiblehiss) at 4,8 bar/70 psig +/- 5%.
8. For HELiOS Universal Reservoir:
a. Slowly pressurize the reservoir by adjusting the oxygen
source regulator.
b. Verify that the secondary relief valve opens (audiblehiss) at 2,1 bar/30 psig +/- 5%.
NOTE: If the secondary relief valve does not open within thisrange the first time, first increase the pressure to ensure the SRV
has cracked, then reduce the pressure in the reservoir and repeat
the test a second time. If it fails to open within the acceptable
range the second time, replace the valve SRV.
9. Slowly reduce the pressure within the reservoir until the audible hissing noise is no longer heard.
10. For HELiOS Standard Reservoir:
a. Verify that the SRV closes (audible hiss is no longer
heard) at a pressure greater than 4,3 bar/63 psig.
11. For HELiOS Universal Reservoir:
a. Verify that the SRV closes (audible hiss is no longer
heard) at a pressure greater than 1,9 bar/27 psig.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
RP17 – Pressure Retention Test

1. Remove the upper shroud per RP4.

1. Attach pressurizing fixture to the QDV on the reservoir.

2. Use a 5/8-in. open-end wrench to remove the SRV fromthe PRV, R/E valve.

2. Connect an adjustable 0-6,89 bar/0-100 psig source of gaseous oxygen to the DISS oxygen inlet on the pressurizing
fixture.

3. Slide the press-on tubing clamp back and disconnect theflexible black (gas) pressure sense tube from the 1/16-in.
barbed fitting on the PRV, R/E valve.
4. Use a 1/4-in. open-end wrench to remove the 1/16-in.
barbed fitting.
5. Use a ½ -in. open-end wrench to remove the economizer
tube assembly inverted compression nut from the PRV,
R/E valve.
6. Carefully pull the economizer tube down until it clears the
PRV, R/E valve.

3. Pressurize the unit to :a.

For HELiOS Standard Reservoir:
i. 3,10 bar/45 psigb.

For HELiOS Universal Reservoir:
i. 1,65 bar/24 psig

NOTE: Lightly tap the pressure gauge with your finger to assurethat the needle is reading properly.
4. Remove the pressurizing fixture.

7. Use a ¾ -in. open-end wrench to remove the PRV, R/E
valve from the threaded manifold extension tube.

5. Let the unit stand for 10 minutes to allow the pressure inside
the reservoir to stabilize.

8. Apply Teflon tape sealant to the threaded manifold tube
facing the embossed circular index mark on the top of thelower shroud.

6. Verify pressures are approximately:

9. Install the PRV, R/E valve on the threaded manifold tube
and tighten so that the SRV port is in a vertical, up position.

a.

For HELiOS Standard Reservoir:
i. 2,90 – 3,10 bar/42-45 psigb.

For HELiOS Universal Reservoir:
i. 1,52-1,65 bar/22-24 psig

10. Install the end of the economizer tube with the inverted
compression nut in the bottom port of the PRV, R/E valve.

7. Reattach the pressurizing fixture to the QDV on the reservoir.

11. Make sure the tube end is aligned properly in the port andthen tighten the inverted compression nut.

8. Record the initial time and pressure.

12. Install the 1/16-in. barbed fitting in the PRV, R/E valve
port that faces the center of the reservoir.
13. Connect the flexible black tube and the tubing clamp to
the barbed fitting.
14. Apply Teflon tape sealant to the SRV threads.

HELiOS Reservoirs

RP16 – PRV, SRV, R/E Valve RR

NOTE: Lightly tap the pressure gauge with your finger to assurethat the needle is reading properly.
9. Allow unit to sit undisturbed for 60 minutes.
10. Engage the pressurizing fixture (without the gaseous oxygen
source) and take a final reading.

15. Install the secondary relief valve in the PRV, R/E valve
port and tighten until snug.
16. Perform leak test.
17. Install the upper shroud.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Proceduresa.

For HELiOS Standard Reservoir:
i. 2,76 bar-40 psigb.

For HELiOS Universal Reservoir:
i. 1,17 bar/17 psig

HELiOS Reservoirs

11. Verify that the pressure is greater than:

RP19 – Vent Valve RR
1. Remove upper shroud per RP5.
2. Use a 3/4-in. open-end wrench to remove the vent valve.
Place the wrench on the valve hex flats closest to the manifold to prevent disassembly of the valve as you remove it.

NOTE: If the pressure is out of specification, perform the leakDetector Test to determine the source of the leak.

3. Inspect the valve stem O-ring and spring pin for wear ordamage.

12. Disconnect the pressurizing fixture.

4. Inspect the vent wrench stops on the valve body for wear ordamage.

RP18 – Warming Coil Assembly RR

5. Use a 3/4-in. open-end wrench to hold the outer hex flatsof the vent valve stationary while using a 9/16-in. open-end
wrench to remove the vent extension.

1. Remove upper shroud per RP5.

6. Lightly clamp the vent valve in a vise.

2. Use a 9/16-in. open-end wrench to hold the flow restrictor
connector stationary at the pressure regulator inlet (Standard
reservoir) or the outlet block inlet (Universal reservoir).

7. Use a pin punch and a hammer to drive the spring pin out ofthe valve stem.

3. Use a second 9/16-in. open-end wrench to remove thewarming coil compression nut from the flow restrictor connector.
4. Carefully pull the warming coil tube out of the connector.
5. Use a 9/16-in. open-end wrench to hold the liquid withdrawal tee stationary.
6. Use a second 9/16-in. open-end wrench to remove thewarming coil compression nut from the tee.
7. Pull the aluminum warming coil tube away from the tee andcarefully guide the small Teflon liquid withdrawal tube outof the aluminum tube.

8. Use a small screwdriver to carefully pry the retainer ring offof the valve stem.
9. Use a dental pick or similar object to lift the O-ring off thevalve stem.
NOTE: Before installing the vent valve, wrap the threaded manifold extension tube with Teflon tape starting two threads backfrom the end. Verify that the arrow on the vent valve body points
away from the manifold.
10. To reinstall or replace the vent valve, reverse the above procedure.

8. Push the warming coil assembly back toward the release lever.
9. Rotate the warming coil to bring the far side up and over the
release lever.
10. Pull the near side of the warming coil forward to clear theoxygen outlet DISS fitting and vent valve extension.
11. To reinstall or replace the warming coil, reverse the above
procedure.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
HELiOS Reservoirs

RP20 – Fill Connector Release Assembly RR
1. Remove upper shroud per RP5.
2. Use needle nose pliers to remove one E-clip from the release
lever pivot pin.
3. Remove the pin from the release lever.
4. Remove the lever from the mounting bracket.
5. Use a No. T10 Torx driver to remove two Torx screws fromthe release button.
6. Remove the button from the lever.
7. To reinstall or replace the fill connector release assembly,
reverse the above procedure.
RP21 – QDV Assembly RR
1. Remove upper shroud per RP5.
2. Remove the fill connector release assembly.
3. Use a 7/8-in. open-end wrench to hold the body of the fillconnector stationary.
4. Use a 10-in. adjustable wrench to loosen the compression
nut on the fill connector.
5. Remove the fill connector.
6. Inspect the poppet on the cartridge assembly for wear ordamage.
7. To reinstall or replace the QDV, reverse the above procedure.
8. Ensure to add a small amount of Krytox lubricant on thethreads of the QDV.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
RP23 – Operating Pressure Test

1. Ensure unit is at least ½ to ¼ full of LOX.
2. If LOX is added to reservoir, allow unit to sit for a minimumof 1 hour prior to beginning test.
3. Attach a 1,5 bar/22 psig external FCV (P/N B-701655-FLO)
to the reservoir DISS oxygen outlet.
4. Connect FCV outlet to flow meter inlet with respiratory tubing.
5. Make sure flow meter outlet is open and unobstructed andflow meter is properly positioned.
6. Test flow rate at each FCV position.
7. Compare flow rates to the table below.
NOTE: Be careful to allow for accuracy tolerances of flow meter.
Table 10 below does not account for these tolerances.
Table 10FCV Setting

LPM

OFF
0.12
0.25
0.50
0.75
1.00
1.50
2.00
2.50
3.00
3.50
4.00
5.00
6.00
8.00
10.0

0
0.02-0.22
0.08-0.42
0.33-0.67
0.58-0.92
0.83-1.17
1.18-1.82
1.61-2.43
2.08-2.97
2.55-3.51
2.92-4.04
3.43-4.62
4.33-5.77
5.14-6.92
6.72-9.28
8.42-11.53

NOTE: If testing operating pressure because of improper flow
rates, test pressure immediately after flow rate test.
NOTE: Older style Universal HELiOS reservoirs were notequipped with internal pressure gauges, therefore the following
procedures should be followed for these units. Otherwise, theoperating pressure can be determined by checking the internalpressure gauge.

HELiOS Reservoirs

RP22 – Flow Rate Test

1. Ensure unit is at least ½ to ¼ full of LOX.
2. If LOX is added to reservoir, allow unit to sit for a minimumof 1 hour prior to beginning test.
3. Attach a 1,5 bar/22 psig external FCV (P/N B-701655-FLO)
to the reservoir DISS oxygen outlet.
4. Attach a 0-6,9 bar/0-100 psig pressure gauge to the DISS fitting on the external FCV using a DISS fitting adapter.
5. Open the FCV to any setting above 2 LPM.
6. Pressure gauge should read:a.

For HELiOS Standard Reservoir:
i. 1,4-1,6 bar/20.5-23.5 psigb.

For HELiOS Universal Reservoir:
ii. 1,4-1,6 bar/20.5-23.5 psig

Note: Flow rates will only be accurate if the reservoir
is filled properly. Reference the filling section of thismanual for the correct procedure.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XI Troubleshooting & Repair Procedures
RP25 – NER Test

1. Verify that the reservoir contains at least 9 kg/20 lbs ofliquid oxygen.

1. Fill the unit with 9 to 11 kg/20 to 25 lbs. of properly saturated liquid oxygen.

2. If LOX is added to reservoir, allow unit to sit for a minimum of 1.5 hours prior to beginning test.

2. Allow unit to sit undisturbed for a minimum of 18 hours.

3. Attach a 0-6,9 bar/0-100 psig external FCV(P/N B-701655-FLO) to the reservoir DISS oxygen outlet
and set a continuous flow of 4 L/min.

3. Weigh unit.
4. Record weight and time (1st Recorded Weight).
5. Allow unit to sit undisturbed for a minimum of 24 hours.

4. Engage the pressurizing fixture to the fill connector on thereservoir and secure it with the attached strap.

6. Weigh unit.

5. The pressure gauge should read:

7. Record weight and time (2nd Recorded Weight).

a. For HELiOS Standard Reservoir:
i. 2,9-3,3 bar/42-48 psig
NOTE: If the gauge reading is higher, open the reservoir ventvalve to reduce the pressure. If the gauge reading is lower,
allow time for the saturation pressure to increase to 2,9-3,3
bar/42-48 psig

HELiOS Reservoirs

RP24 – Economizer Test

8. Calculate liquid loss rate (NER) using the following formula:
2nd Recordered Weight - 1st Recorded Weight= NER# hours24()

9. The NER should be 0.68kg per day/1.5 lbs per day or less.

b. For HELiOS Universal Reservoir:
i. 1,6-1,7 bar/23-25 psig
NOTE: If the gauge reading is lower, allow time for the saturation pressure to increase to 1,6-1,7 bar/23-25 psig
6. With the unit delivering an oxygen flow, record the pressure readings on the pressurizing fixture gauge every hour
until the pressure stabilizes.
7. Stabilization occurs when two consecutive readings arewithin .07 bar/1 psig of each other.

NOTE: If the economizer is suspected to be malfunctioning,please contact Technical Service.

RP26 – Oxygen Outlet Block RR
1. Remove the upper shroud per RP5.
2. Use a 5/8-in. open-end wrench to remove the DISS fittingfrom the outlet block.
3. Use a 9/16-in. open-end wrench to hold the flow restrictor
connector stationary at the oxygen outlet block inlet.
4. Use a second 9/16-in. open-end wrench to remove thewarming coil compression nut from the flow restrictor
connector.
5. Carefully pull the warming coil tube out of the connector.
6. Use a 9/16-in. open-end wrench to remove the flow restrictor connector from the oxygen outlet block.
7. Lift the contents indicator off of the mounting plate anduse a 5/32 in. hex key wrench to remove the flat headscrew that fastens the oxygen outlet block to the mounting
plate.
8. Remove the oxygen outlet block.
9. To reinstall or replace the oxygen outlet block, reverse theabove procedures.
HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XII
1 Parts List
HELiOS Reservoirs

Contact Customer Service or visit www.caireinc.com to
obtain your parts list.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XIII Ordering Information
The following steps should be used when ordering a new HELiOSor replacement parts for an existing unit:
1. Compile a list of all equipment and replacement parts to beordered.
2. Fill out a purchase order containing the following information:a. Purchase order number.
b. Name and address of billing location.
c. Name and address of shipping location.
d. Quantity, part number, description, and unit costfor each item ordered.
3. Telephone or fax CAIRE Inc. at one of the numbers listed
below to begin immediate processing of the order:
USA
Toll Free Phone:

800 48 CAIRE
			(800 482 2473)
Toll Free Fax:
888 WE CAIRE(To place an order):		(888 932 2473)
Phone:		770 257 1299
Fax:
		770 257 1300

HELiOS Reservoirs

Ordering Information

4. E-Mail or fax the completed purchase order for confirmation to:
North and South America/Asia/Pac Rim email to:www.caireinccom

Africa/Europe/Middle East email to:www.caireinc.com

North and South America fax to: 888-932-2473
Asia/Pac Rim fax to: 770-721-7758

Africa/Europe/Middle East fax to: +44 118 9799245
All new equipment will be shipped either “prepaid”,, F.O.B. fromthe factory, or collect via your specified carrier. All replacement
parts will be sent by UPS “prepaid”, and the shipping charges forequipment and parts will be added to the final invoice. Payment for
replacement parts are located on CAIRE, Inc.’s, invoice with payment date indicated. All shipments will originate from the factory. If
a particular carrier or method of shipment is desired, specify whenplacing order.

Asia, Australia, Pacific Rim
Phone:+61 297 494333
Fax:
888 932 2473
EuropePhone:
Fax:+44 (0) 1189 367060+44 118 9799245

For additional ordering and contact

information, visit www.caireinc.com

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XIV Return & Restocking Policy
If a problem with the unit should be encountered, reference
should be made to the Troubleshooting Chart in Section X, page
27-30. If these procedures do not provide a solution for the problem, the following steps should be taken:
1. Call CAIRE, Inc. Customer Service.
North and South America/Asia/Pac Rim:
Phone (US Only)

800-482-2473

Phone

770-721-7759

If it becomes necessary to cancel an order with CAIRE Inc. after the shipment has been received, use the following “Restock
Policy” procedure:
1. Call CAIRE Inc. Customer Service.
2. When contacting Customer Service personnel, it will be necessary to relay the following information:a. State the quantity and description of equipment to be returned.
b. Give the Serial Number of each unit to be returned.
c. State the equipment purchase date.

Africa/Europe/Middle East:
Phone

Restocking Policy

HELiOS Reservoirs

When a CAIRE unit is received, it should be inspected immediately, as outlined in Section VII, Unpacking and Setup
Instructions.

+44 (0) 1189 367060

2. State the problem with the unit.
3. If it is determined that the problem cannot be solved by the
distributor, a Return Material Authorization (RMA) number
will be assigned to the unit or part(s).
4. If a Purchase Order Number is to be referenced, please givethis number to the Customer Service Representative at thattime.
5. Carefully package the parts, or repack the unit in its original
shipping container, precisely as shipped.
6. Write the Return Authorization Number on the top of theshipping container.
7. Customer Service will provide the correct shipping location
once the RMA is provided

3. An RMA number will be issued in the name of the distributor by CAIRE Inc. for the equipment to be returned.
4. When the equipment is shipped to the factory, the RMA
number must appear on the packing slip and shipping boxes.
5. Customer Service will provide the correct shipping location
once the RMA is provided
6. Finally, a “Credit Memo”, minus a 15% restocking fee, will
be issued to the distributor when all equipment has been received, inspected, and restocked by CAIRE Inc
Return of Unused Non-Defective Merchandise
CAIRE Inc., at its discretion, charges a 15% restocking fee forunused non-defective merchandise that is returned. An RMA
number must be obtained from CAIRE Inc. Customer Service
prior to return of any goods. Merchandise cannot be returned for
credit after sixty (60) days. Customer to pay all freight charges.
Tracking capability and insurance on all returned goods is advised. CAIRE Inc. will not be responsible for misdirected shipments.

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XV Service Tools/Equipment/Supplies
Required Supplies

Hex Wrenches (various sizes)

Household Glass Cleaner

Phillips Blade Screwdriver

PTFE Tape

Flat Blade Screwdriver

10 in. Adjustable Wrench
Torx T 10 ScrewdriverOpen End Wrenches (1/2” to 1-1/8”)
Side Cutters

Lint-Free Cloth
Fluorolubricant

Leak Detection Fluid
Isopropyl Alcohol

HELiOS Reservoirs

Required Tools

PliersClamp or Hemostat
6 in. Bar Clamp
Dental Pick

Required Fixtures/Equipment
Oxygen Regulator

Vent Valve Wrench

0-6,9 bar/0-100 psig Pressure Gauge
Pressurizing Fixture
Flowmeter

02 Gas Source (High Pressure bottle)
02 Liquid Source

N2 Gas or Clean, Dry Compressed Air Source
Tubing (O2 compatible)

O2 Tubing Tee Connector
Lip Seal Service Tool

Male Pneumatic Test Adapter
LO2 Transfer Line

Transfer Line Adapter with Filter
Dewar Cap

Scale 0-92 kg/0-200 lbs, 0.05 lb/0.02 kg increments

Oxygen DISS Wye Outlet Adapter w/ Demand Check Valve
OutletJet /Venturi AssemblySize 00 Rubber Stopper

DISS O2 Outlet Connector
Small Tie Wrap/Zip Tie

0-10 L/min, 1,5 bar/22 psig external FCVOxygen Supply Tube Coupler

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XV Service Tools/Equipment/Supplies
Vent Wrench

Item

Part Number

B-775182-00

Fill Adapter Seal

B-775262-00

Female Fill Connector

20553105

B-775091-00

Female Top Transfill Line Adaptor

10678157

B-776945-00

Dual Fill Adaptor TF&SF

10897958

Transfill Line Swivel

97404564

B-776004-00

Pneumatic Hose w/DISS Fittings

97405279

Small Tie Wrap

Tubing Barb Adaptor

Disposable Tubing Barb Adaptor
O2 Compatible Tubing

Test Pressure Gauge w/Tubing Adapter
0-6,9 bar/0-100 psig
Test Pressure Gauge w/Tubing Adapter
0-4,1 bar/0-60 psig

97403577

B-775269-00
B-778214-SV
B-701732-00

Super Flex LOX Transfer Line
1.8 m/6 FT

B-775270-SV

5/8” LOX Transfer Line w/Swvl Nuts
1.8 m/6 FTReservoir Pressurizing Fixture0-6,9 bar/0-100 psig

B-701731-SV

Oxygen Compatible Leak Detector (Snoop)

B-775272-00

0-10 L/min, 1,5 bar/22 psig external FCV

B-701655-FLO

Erie Liter Meter, 6-15 LPM

10995620

Erie Liter Meter, 0-8LPM

Fluoro-Lubricant-2 oz Tube
Lubricant - Krytox 240 AC FluorinatedGreaseHELiOS Oxygen Supply Tube Coupler

9713119
10

Replacement Inline Filter, Male Transfer
Line Adapter

10565161
CA400004

CA200071
20605136
B-701686-00

14880387• Caster (set of 5; CE Marked)

14880379• Caster (set of 5; Non-CE Marked)

5/8” LOX Transfer Line w/Swvl Nuts
FT

97406555

B-775311-00

Roller base Assembly (CE Marked)

Roller base Assembly (Non-CE Marked)

Part Number

B-775273-00

0-6,9 bar/0-100 psig Pressure Gauge
0-4,1 bar/0-60 psig Pressure Gauge

Item

Relief Valve (10,4 bar/150psi)

HELiOS Reservoirs

Tools and Accessories available from CAIRE

14880803
14880361

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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XV Service Tools/Equipment/Supplies
HELiOS Reservoirs

Tools and Accessories available from CAIRE (cont.)
Item

Part Number

Shipping Carton, HELiOS 36

B-702223-SV

Oxygen Supply Tube Assy. (15.2 m/50 ft.)

B-701656-SV

Shipping Carton, HELiOS 46

B-702189-SV

Oxygen Supply Extension Tube
(15.2 m /50 ft.)

B-701432-00

Dual Lumen Cannula (2.1 m/7 ft.)(Sense and delivery in both nostrilsConcentric Tubes)

10035467

Reservoir Fill Connector Cover

B-777095-00

Dual Lumen Cannula (1.5 m/5 ft.)(Sense and delivery in both nostrils-Concen- 10035468
tric Tubes)
Dual Lumen Cannula (2.1 m/7 ft.)(Sense and delivery in both nostrilsSplit Nasal Prongs)

6-778057-00

Dual Lumen Cannula (1.5 m/5 ft.)(Sense and delivery in both nostrils)

6-778058-00

Dual Lumen Cannula (0.9 m/3 ft.)(Sense and delivery in both nostrils)

B-701511-00

Dual Lumen Cannula (2.1 m/7 ft.)(Sense and delivery in separate nostrils)

B-701930-00

Dual Lumen Cannula (1.2 m/4 ft.)(Sense and delivery in separate nostrils)

B-701931-00

HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

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CAIRE Inc.
2200 Airport Industrial Dr., Ste. 500
Ball Ground, GA 30107
Ph 770-721-7700 • Toll Free 1-800-482-2473
Fax 770-721-7701
www.caireinc.com

CAIRE Medical Ltd.
Unit 6, Ashville Way Wokingham
Berkshire, RG41 2PL United Kingdom
Ph +44 (0) 1189 367060 Fax +44(0) 0118 979 9245

Copyright © 2021 CAIRE, Inc.. CAIRE Inc. reserves the right to discontinue its products,
or change the prices, materials, equipment, quality, descriptions, specifications and/or
processes to its products at any time without prior notice and with no further obligation orconsequence. All rights not expressly stated herein are reserved by us, as applicable.

18 March 2021 HELiOS Reservoirs Technical Service Manual • PN 14883289 Rev K

1