Liberator ®

User Manual (US)Liberator
Symbols Glossary
ISO 7000
Keep away from rain, keep dry. Reg.
# 0626
Stacking limit by number. Reg. #2403
Name and address of manufacturer.
Reg. # 3082
The country and date of manufacture.
The “CC” identifies the two lettercountry code of the country of manufacture. The date of manufacture is in
YYYY-MM-DD format. Reg. # 6049
Caution, consult accompanying documents. Reg. # 0434A
Catalog Number. Reg. # 2493
Serial Number. Reg. # 2498
Storage or operating temperature
range. Reg. # 0632

Type BF applied part (degree ofprotection against electric shock).
Reg. # 5333
Warning. Reg. # W001
Council Directive 93/42/EEC
Authorized representative in theEuropean Community
If the product unique device identifier(UDI) label has the CE#### symbolon it, the device complies with therequirements of Directive 93/42/EEC
concerning medical devices. The
CE#### symbol indicates notified
body number.
This device complies with the requirements of Directive 2010/35/EU
concerning medical devices. It bears
the pi marking as shown.
ADR

Storage humidity range Reg. # 2620

Non-toxic gas.

Atmospheric pressure limitation. Reg.
# 2621

Hazard Oxidizing substances: fire
intensifying risk. Oxidizing agents
cause fires to burn more vigorously.

This way up. Reg. # 0623
Fragile, handle with care. Reg. # 0621

ISO 7010

Do not smoke near unit or while
operating unit. Reg. # P002

Refrigerated Liquid, USP; Produced
by Air Liquefaction
Additional Symbols

Contains hazardous substances. Reg.
# 3723

Keep unit well ventilated at all times

Importer. Reg. # 3725

Keep away from flammable materials,
oil and grease.

Frostbite may occur on contact withcold liquid or gaseous oxygen, or
frosted parts. Warning low temperature. To warn of low temperature or
freezing conditions. Reg. # W010
The instruction manual must be read.
Reg. # M002
Keep away from open flame, fire,
sparks. Open ignition source andsmoking prohibited. Reg. # P003

2 - US PN MN234 J | User Manual

Wipe connector with clean dry cloth
before filling.
Authorized representative in
Switzerland.
If the device bears the UKCA markas shown with UKCA#### indicating
the notified body number, this device
complies with UKCA regulations.

Liberator
IEC 60417

Do not cover unit or carry portable
unit under your clothing. These units
normally vent oxygen. No. 5641
21 CFR 801.15
Federal law restricts this device tosale by or on the order of a physician.
IEC 60601-1
Drip Proof Equipment - IP21
Council Directive 2012/19/EU
WEEE
This symbol is to remind the equipment owners to return it to a recycling
facility at the end of its life, per Waste
Electrical and Electronic Equipment(WEEE) Directive.
Our products will comply with therestriction of Hazardous Substances(RoHS) directive. They will not contain more than trace amounts of leador other hazardous material content.
ISO 15223-1
Medical Device. Reg. # 5.7.7
Unique device identifierReg. # 5.7.10
This product may be covered by one or more patents, US and international. Please visit our website
below for the listing of applicable patents. Pat.:www.caireinc.com/corporate/patents/ .

PN MN234 J | User Manual US - 3

Liberator
Specifications• Mode of Operation: Continuous Flow
• Type of Protection Against Electrical Shock: Internally Powered Equipment• Degree of Protection Against Electrical Shock: Type BF Applied Part
• IP21 Classification According to the Degree of Protection Against Ingress of Water: Internal protection against ingress of solid foreign objects greater than or equal to 12.5 mm in diameter and ingressof vertically dripping water.
• Equipment not suitable for use in the presence of flammable mixtures
Product Specifications
Liberator 20
LOX Capacity
GaseousEquivalent
Capacity
Weight, Empty*
Weight, Filled**
HeightDiameter
Typical use timeat 2 LPM
OperatingPressure
Normal
Evaporation Rate
Standard Flow
Control Range
Flow Rate
Accuracy†

Liberator 30

Liberator 37

Liberator 45

Liberator 60

21.0 L50.7 lb(23 kg)17,337 L

31.0 L
74.8 lb(33,9 kg)
25,580 L

37.3 L90.0 lb(40,8 kg)
31,121 L

45.7 L
110.3 lb
(50,04 kg)
37,724 L

60.2 L
145.3 lb
(65,9 kg)
49,679 L

39 lb(17,96 kg)
89.7 lb(40,69 kg)
24.5 in.
(622 mm)
14 in. (356 mm)
6.0 days

48.6 lb(22,04 kg)
122.32 lb(55,94 kg)
29.5 in.
(749 mm)
14 in. (356 mm)
8.9 days

50 lb(22,68 kg)
140 lb(63,48 kg)
32.75 in.
(832 mm)
14 in. (356 mm)
10.8 days

55 lb(24,95 kg)
165.32 lb(74,99 kg)
37 in. (940 mm)

75.4 lb(34,19 kg)
220.68 lb(100,1 kg)
39 in. (991 mm)

14 in. (356 mm)
13.1 days

16 in. (406 mm)
17.2 days

20 psi (137 kPa)

20 psi (137 kPa)

20 psi (137 kPa)

20 psi (137 kPa)

20 psi (137 kPa)

1.6 lb/ day(0,73 kg/day)
Off, .25, .5, .75,
1, 1.5, 2, 2.5, 3,
4, 5, 6, 8, 10, 12,
15 LPM+/- 10%1.6 lb/ day(0,73 kg/day)
Off, .25, .5, .75,
1, 1.5, 2, 2.5, 3,
4, 5, 6, 8, 10, 12,
15 LPM+/- 10%1.6 lb/ day(0,73 kg/day)
Off, .25, .5, .75,
1, 1.5, 2, 2.5, 3,
4, 5, 6, 8, 10, 12,
15 LPM+/- 10%1.6 lb/ day(0,73 kg/day)
Off, .25, .5, .75,
1, 1.5, 2, 2.5, 3,
4, 5, 6, 8, 10, 12,
15 LPM+/- 10%1.65 lb/ day(0,75 kg/day)
Off, .25, .5, .75,
1, 1.5, 2, 2.5, 3,
4, 5, 6, 8, 10, 12,
15 LPM+/- 10%*The empty weight may vary slightly.
** The full weight may vary based upon the filling conditions.
† This accuracy is only at 70F and 14.7 psig and with a calibrated accurate mass flow meter.

4 - US PN MN234 J | User ManualLiberator
Warning Information
Important: Read this manual thoroughly before
operating the Liberator.
RX Only.
WARNING: THIS DEVICE IS NOT INTENDED FOR LIFE SUSTAINING USE.
WARNING: PATIENT OR OTHERS MAY BE ENTANGLED IN CANNULA OR OTHER TUBING CAUSINGASPHYXIATION.
WARNING: IF YOU FEEL THE EQUIPMENT IS NOTOPERATING PROPERLY, CALL YOUR HEALTH
CARE PROVIDER. DO NOT ATTEMPT TO REPAIR
OR ADJUST THE UNIT YOURSELF.
WARNING: DO NOT MODIFY THIS EQUIPMENTWITHOUT AUTHORIZATION FROM THE MANUFACTURER.
WARNING: IF CONTINUITY OF OXYGEN SUPPLY IS
REQUIRED, ENSURE THAT AN ADEQUATE SUPPLYOF OXYGEN AND/OR A SECONDARY OXYGENSUPPLY IS AVAILABLE AT ALL TIMES DURING
THERAPY.
WARNING: DO NOT ALLOW SMOKING, CANDLES,OR OPEN FLAMES WITHIN 10 FEET (3 METERS) OF
THE DEVICE, OR CLOSER THAN 8 INCHES (20 CM)
FROM ANY SOURCE OF IGNITION.
WARNING: KEEP YOUR UNIT IN A WELL-VENTILATED AREA.
WARNING: DO NOT STORE LIQUIDOXYGEN EQUIPMENT IN A CLOSET, CAR
TRUNK, OR OTHER CONFINED AREA. DO
NOT PLACE BLANKETS, DRAPERIES, OR
OTHER FABRICS OVER EQUIPMENT.
WARNING: THIS PRODUCT CAN EXPOSE YOU
TO CHEMICALS INCLUDING NICKEL, WHICH IS
KNOWN TO THE STATE OF CALIFORNIA TO CAUSECANCER. FOR MORE INFORMATION, GO TO WWW.
P65WARNINGS.CA.GOV.
WARNING: IN THE EVENT THERE IS A SERIOUS
INCIDENT OCCURRING WITH THIS DEVICE, THE
USER SHOULD IMMEDIATELY REPORT THE
INCIDENT TO THE PROVIDER AND/OR THE MANUFACTURER. A SERIOUS INCIDENT IS DEFINED AS
AN INJURY, DEATH, OR POTENTIAL TO CAUSE
INJURY/DEATH SHOULD THERE BE A REOCCURRENCE OF THE INCIDENT. THE USER CAN ALSOREPORT THE INCIDENT TO THE COMPETENT AUTHORITY IN THE COUNTRY WHERE THE INCIDENTOCCURRED.

Caution: The unit contains liquid oxygen which isextremely cold, almost 300°F (-184°C). Exposure tosuch a low temperature can cause severe frostbite.
Caution: Liquid and gaseous oxygen, though nonflammable, cause other materials to burn faster thannormal. This hazard, along with the low temperatureof liquid oxygen, warrants certain safety precautions.
Caution: Keep flammable materials away from thisequipment. Aerosol sprays, oils and grease, including facial creams and petroleum jelly, ignite easily
and may burn rapidly in the presence of oxygen.
Caution: Smoking while wearing an oxygen cannula
can cause facial burns and possibly result in death.
Caution: Removing the cannula and placing it on
clothing, bedding, sofas, or other cushion material
will cause a flash fire when exposed to a cigarette,heat source, spark or flame.
Caution: If you smoke please: (1) turn off the portable, (2) take off the cannula, and (3) leave the room
where the device is located.
Caution: In the event of an accidental tip-over, immediately but cautiously return the unit into an uprightposition if possible. If any liquid oxygen is escaping,leave the area immediately and call your healthcare
provider. Do not attempt to move the unit or stop theliquid oxygen from escaping.
Note: Do not touch frosted parts of any unit.
Note: Do not store or operate the portable coupled to
the Liberator.
Note: Do not allow untrained personnel to handle oroperate this device.
Note: Use of this device is prohibited on commercial
passenger and cargo air flights by the Federal Aviation
Administration.

Intended Use

The CAIRE Liberator Oxygen unit is intended forthe administration of supplemental oxygen. The
device is not intended for life support nor does it
provide any patient monitoring capabilities.

Caution: Use the Liberator only as directedby your doctor.

PN MN234 J | User Manual US - 5

Liberator
Introduction

Controls

The Liberator reservoir is intended for the administration of supplemental oxygen to the patient in theend user’s home and can also be used in institutions
such as nursing homes or sub-acute care facilities.
The device is not intended for life support nor doesit provide any patient monitoring capabilities. It
is recommended to have an alternate source of
supplemental oxygen in the event of mechanicalfailure.

1. Gen 4 Meter Liquid Level Gauge

The device is used by COPD patients or thosewith diminished breathing capacity. The device isprescribed to the patient. The device is sold to a
provider that is trained to operate and service the
Liberator reservoir. The provider trains the user.

7. Vent Valve

2. Flow Control Knob
3. DISS Connection
4. Liberator Side Fill connector (if applicable)
5. Liberator Release Button (Top Fill push-on styleonly)
6. Liberator Top Fill Connections (QDV)

6
The liquid oxygen system includes the Liberator and a portable unit, which provides you with
supplementary oxygen as prescribed by your physician. This user manual contains the instructions
for using the Liberator. Refer to the user manualsupplied with the portable unit for its operation.
The Liberator is intended for stationary use. You
may take oxygen directly from the Liberator.
The Liberator is offered as a top fill model or a dual 7
top fill and side fill unit. They are filled by yourhealth care provider. The portable provides an ambulatory source of oxygen for an extended periodof time. It is filled from the Liberator.
Note: The service provider will assist with the initial
1
setup and instruct proper handling and usage of theunit.

Dual Fill Liberator shown.
Also available in 20, 37, 41, 45, and 60 liter models.

6 - US PN MN234 J | User Manual

5
4

3
2

Liberator
Operating Instructions
1. To verify the level of liquid oxygen in the unit,
see page 9.
2. Clean the fill connectors on both the Liberator
and portable unit with a clean, dry, lint free cloth
between each fill to prevent freezing and possible
equipment failure.
WARNING: THE CONNECTION MUST BE
DRY, BECAUSE MOISTURE CAN CAUSE
THE EQUIPMENT TO FREEZE TOGETHERAND MAY CAUSE LEAKAGE IN THE FILL
CONNECTORS.
WARNING: CLEAN THE FILL CONNECTIONS ON THE LIBERATOR AND PORTABLE UNIT WITH A CLEAN, DRY, LINTFREE CLOTH.
WARNING: DO NOT DEPRESS OR DISTURB THE METAL POPPET ON THE FILL
CONNECTOR WHEN DRYING IT. THIS CANCAUSE LEAKAGE OF LIQUID OXYGEN. IF
A LEAK OCCURS, LEAVE THE ROOM AND
CALL YOUR HEALTH CARE PROVIDER.
WARNING: SHOULD LEAKAGE BE EXCESSIVE TO THE POINT THAT A STREAM OF
LIQUID IS PRESENT, LEAVE THE AREA
AND CALL YOUR HEALTH CARE PROVIDER IMMEDIATELY.
WARNING: IF LARGE AMOUNTS OF
VAPOR ARE ISSUING FROM THE UNITSDURING FILLING, STOP FILLING, LEAVE
THE ROOM AND CALL YOUR HEALTH
CARE PROVIDER.
WARNING: IF PROLONGED HISSING IS
HEARD, STOP USE AND CONTACT YOURHEALTH CARE PROVIDER IMMEDIATELY
3. Turn the Liberator flow control knob to the off(0) position.
4. Follow the filling instructions provided for the
portable unit.

Caution: Should there be any liquid leakage
from the portable after separating the units,
set the portable aside, ensuring it remains
vertical, leave the room, and call yourhealth care provider immediately.
Caution: Should there be any liquid leakage
from the reservoir after separating theunits, open windows in the room, leave theroom and call your health care provider
immediately.
Caution: Check the liquid level only after
the vent valve is closed.

Basic Operations
1. Use the following chart as a guideline todetermine the length of time the Liberator will
operate:
Model
L-20
L-30
L-37
L-45
L-60
Off
Nominal0.25
34-17 50-2
61-10 74-19 90-2
0.5
24-16 35-15 43-16 53-4
68-8
0.75
16-11 23-18 29-3
35-11 45-13
1
12-8
17-19 21-20 26-14 34-4
1.5
8-5
11-21 14-13 17-17 22-18
2
6-4
8-21
10-22 13-7
17-1
2.5
4-22
7-3
8-17
10-15 13-16
3
3-2
5-22
7-6
8-20
11-9
4
2-11
4-10
5-11
6-15
8-12
5
2-1
3-13
4-8
5-7
6-19
6
1-12
2-23
3-15
4-10
5-16
8
1-5
2-5
2-17
3-7
4-6
10
1-0
1-18
2-4
2-15
3-10
12
0-19
1-11
1-19
2-5
2-20
15
0-19
1-4
1-11
1-18
2-6
Note: Times are in days and hours (format 00-00).
Note: The “Nominal” times are for ideal conditions, i.e.
maximum fill, exact flow rates, good loss rate, Liberator
not being moved, etc. These times are the maximum
expected.
Note: Your individual results will vary.

WARNING: IF THE PORTABLE DOES NOTSEPARATE EASILY, DO NOT USE FORCE.
THE UNITS MAY BE FROZEN TOGETHER.
LEAVE THE UNITS CONNECTED AND WAIT
UNTIL THEY WARM UP – THEN THEY WILLSEPARATE EASILY. DO NOT TOUCH ANYFROSTED PARTS.

PN MN234 J | User Manual US - 7

Liberator
2. Use the following chart as a guideline to therecommended tubing length.
FLOW
MAXIMUM (RECOMMENDED)SETTING
TUBING LENGTH*(LPM)
20-psig
50-psig
1-6
100 Ft. (30.5 m)
100 Ft. (30.5 m)
8100 Ft. (30.5 m)
75 Ft. (22.9 m)
1050 Ft. (15.2 m)
50 Ft. (15.2 m)
12
25 Ft. (7.6 m)
50 Ft. (15.2 m)
15
25 Ft. (7.6 m)
25 Ft. (7.6 m)*Length is oxygen tubing only. Does not include a 7 Ft. cannula.

3. Verify functionality of the gauge• Depress button to display level. If level isdisplayed and Low Battery Indicator is not illuminated, battery level is acceptable.
4. To verify the level of liquid oxygen in the unit
with the liquid level gauge:• Depress the push button on top of the unit for two
seconds minimum. Read the LED to indicate
contents level.
Caution: The Liberator is empty if only the
first red LED is lit.
• If the Low Battery Indicator lights up when the
button is depressed, inform your health care provider the next time your Liberator is filled.

Gen 4 Meter

5. Install the DISS extension.
6. Eithera. Attach cannula to the DISS adapter barb on
the DISS connection provided by health careprovider orb. Attach a humidifier bottle to the DISS connection provided by health care provider:• Fill the humidifier bottle with distilled water
to the proper level as indicated in the humidifier
instructions.
• Attach your breathing cannula to the oxygentube connector on the humidifier.
7. Turn the flow control knob clockwise until theprescribed flow rate (numeral) is visible in theknob “window” and a positive detent is felt.
Caution: The knob should not be set higher
than the maximum prescribed flow rate.
Out-of specification oxygen flow will result
if the flow control knob is set between
flow rates. An indication of oxygen flow is
the presence of bubbles in the humidifier
bottle.
Caution: To ensure proper flow rate, verify
fittings are tight and leak free.

8 - US PN MN234 J | User ManualLiberator
Battery Care and Maintenance• Depress button to display level. If level isdisplayed and Low Battery Indicator is not illuminated, battery level is acceptable.

Humidifier Bottle and Cannula are not included

8. Adjust your breathing cannula to the proper position to breathe comfortably.
Note: Ensure the cannula is fully inserted and secure.
During inhalation, you should hear or feel oxygen
flow to the prongs of the nasal cannula. The proper
placement and positioning of the prongs of the nasal
cannula in your nose is critical to the amount of oxygen
delivered to the respiratory system of the end user.
9. You should be receiving oxygen now. Check tomake sure that there are bubbles in the humidifier bottle.
10. Under certain environmental conditions andwith continuous use, the Liberator may develop
an excessive amount of ice on the warming andbreathing coils within the shroud. You should
defrost the unit between liquid oxygen fills toprevent this ice build-up.
Caution: Always turn the flow control knob
to off (0 position) when not in use, or when
the unit is empty.

• If the Low Battery Indicator lights up when the contents
button is depressed, call your Service Provider to replace thebattery.

Portable Filling and Operating
Instructions
Prior to filling any portable unit, visually verify:
a. Broken shroud or shroud components
b. QDV deformationc. Level indicator functionality
d. Presence of all required labels
e. Cryogenic reservoir damage (dents, dings)
f. If LOX is still present in the unit, inspectfor heavy frost or condensation on the exterior of the unit.
Please reference the user manual of your portableliquid oxygen device for specific filling and operating instructions.
WARNING: IF THE PORTABLE UNIT ISNOT COMPATIBLE WITH THE LIBERATOR,DO NOT ATTEMPT TO FILL OR USE THE
PORTABLE UNIT.

Maintenance
To Defrost the Unit
1. Fill a Portable so that you can continue to receive
oxygen while the Liberator defrosts.
2. Set the Liberator flow control knob to 0 andallow the unit to warm to room temperature, as
indicated by the melting of all ice from the unit.
3. Check the condensation collection bottle frequently during defrosting and empty as required.
4. If the Portable runs low before the Liberator isfully defrosted, you may refill it as needed.

Clean the fill connectors on both the stationary
and portable units with a clean, dry, lint-free cloth
between each fill to prevent freezing and possible
equipment failure.
There are no user-serviceable parts in the Liberators.
Your service provider is responsible for any maintenance that my be required per the technical manualof this device. Call your service provider for any
maintenance requirements.
The expected service life is a minimum of five
years.
PN MN234 J | User Manual US - 9

Liberator
Troubleshooting
Issue
Inadequate Flow

Solution• Verify flow control knob is on correct flow rate setting• Verify flow control knob is not set in between flow rates.
• Verify liquid oxygen is in unit
• Verify if cannula is kinked or pinched• Verify if cannula is properly connected to unit
NOTE: If issues persists, contact your service provider.

The liquid level meter does • The battery may need to be replaced or the meter re-calibrated. Contact service
not work or is not accurate.
provider for assistance.
The low battery LED• Contact service provider for assistance.
illuminated on liquid level
meter.
Frosting on coils of• Frosting on coils is normal operation when breathing off of Liberator.
Liberator.
There is frosting on tank or • Frosting on outside of tank is abnormal; contact service provider for assistance.
side of Liberator.
There is a hissing sound• During normal operation the unit's primary relief valve will open from time to time toemanating from Liberator.
relieve excess pressure, especially soon after filling.

Liquid Oxygen evacuatingfrom blue QDV.

Condensation or water
pooling up on floor.
Portable takes a long time
to fill.
Portable not filling.

• If hissing is persistent or abnormal, this could indicate excess pressure being vented
off or a leak in the system. Contact service provider for assistance.
• The QDV may have frozen open. Open windows if possible and evacuate area immediately. Contact service provider.
• To prevent frozen QDV, be sure to wipe QDV with dry lint free cloth before and after
filling your portable.
• As the frost melts on the coils, water may accumulate on the floor if the condensate
bottle is not used or is full. Verify that condensate bottle is installed properly andemptied as needed.
• It could take several minutes to fill portable device if the portable device is warm or
hasn't been used recently.
• Consult user manual for your portable liquid oxygen device.
• Ensure reservoir tank has sufficient liquid to fill your portable device. Ensure portabledevice is pushed onto QDV correctly and the portable vent valve lever is held in the
open position.
• Consult user manual for your portable liquid oxygen device.

10 - US PN MN234 J | User ManualLiberator
Cleaning Standard
WARNING: CLEAN ONLY AFTER THE UNIT
IS EMPTY.
• Clean using a solution of mild dish washingdetergent and water.
• Apply cleaning solution directly to a lint-free
cloth. Approved cleaners include HydroPure
and HydroKlean. Do not spray cleaners
directly on the Liberator.
• Wipe the outside surface with the lint-free
cloth until the outside surface is clean.
Caution: Do not use high temperature andhigh pressure washing equipment to clean
these units.
• Do not get cleaner on any internal components or valves.
• Allow the unit to dry thoroughly before using.
Note: Note to health care provider – for reprocessing
procedures, see applicable service manual.

Accessories

CannulaPosition with prongs facing upward in nose and loop over ears.
Slide adjuster under chin until comfortable.

Condensate Bottle

DisposalAlways return Liberator, including all components,
to your homecare provider for proper disposal. You
can also contact your local city or town offices for
instructions on proper disposal of the battery.

WEEE and RoHS

This symbol is to remind the equipment owners toreturn it to a recycling facility at the end of its life,
per Waste Electrical and Electronic Equipment (WEEE) Directive.
Our products will comply with the restriction ofHazardous Substances (RoHS) directive. They will
not contain more than trace amounts of lead orother hazardous material content.

Transport and Storage
The device should be stored in the upright position,and be well ventilated. Do not allow the device tolie on its side. Humidity up to 95% noncondensing.
Temperatures range from -40°F to 158°F (-40°C to70°C).
Operating temperature ranges from 14°F to 104°F(10°C to 40°C). Relative humidity range from 30%
to 75% noncondensing.
Note: The atmospheric pressure range is 700 hPa to1060 hPa (elevation of 10,000 Ft. to -1,000 Ft.).

Roller Base

Note: Ensure the proper size roller base is used with
the Liberator.
Note: Only use roller base on flat surfaces.
Note: To Equipment Provider: The following oxygen
administration accessories are recommended for use
with the Liberator:• Nasal Cannula: CAIRE Part Number 5408-SEQ• Firebreak: CAIRE Part Number 21126636
A firebreak is recommended for use with any cannula.
• CAIRE offers a firebreak intended to be used inconjunction with the oxygen reservoir. The firebreak is
a thermal fuse to stop the flow of gas in the event thatthe downstream cannula or oxygen tubing is ignited andburns to the firebreak. It is placed in-line with the nasal
cannula or oxygen tubing between the patient and theoxygen outlet of the Liberator. For proper use of the firebreak, always refer to the manufacturer’s instructions(included with each firebreak kit).
• Additional recommended accessories information isavailable online at www.caireinc.com.

PN MN234 J | User Manual US - 11

Liberator
SafetyWARNING: PORTABLE RF COMMUNICATIONS EQUIPMENT (INCLUDING PERIPHERALS SUCH AS
ANTENNA CABLES AND EXTERNAL ANTENNAS) SHOULD BE USED NO CLOSER THAN 30 CM (12INCHES) TO ANY PART OF THE LIBERATOR, INCLUDING CABLES SPECIFIED BY THE MANUFACTURER. OTHERWISE, DEGRADATION OF THE PERFORMANCE OF THIS EQUIPMENT COULD
RESULT.
WARNING: USE OF ACCESSORIES, TRANSDUCERS AND CABLES OTHER THAN THOSE SPECIFIED OR
PROVIDED BY THE MANUFACTURER OF THIS EQUIPMENT COULD RESULT IN INCREASED ELECTROMAGNETIC EMISSIONS OR DECREASED ELECTROMAGNETIC IMMUNITY OF THIS EQUIPMENT AND RESULT IN
IMPROPER OPERATION.
WARNING: USE OF THIS EQUIPMENT ADJACENT TO OR STACKED WITH OTHER EQUIPMENT SHOULD
BE AVOIDED BECAUSE IT COULD RESULT IN IMPROPER OPERATION. IF SUCH USE IS NECESSARY, THISEQUIPMENT AND THE OTHER EQUIPMENT SHOULD BE OBSERVED TO VERIFY THAT THEY ARE OPERATING NORMALLY.
Caution: Medical Electrical Equipment needs special precautions regarding Electromagnetic
compatibility (EMC) and needs to be installed and put into service according to the EMC information
provided in this manual.
Caution: Portable and mobile radio frequency (RF) communications equipment can affect Medical
Electrical Equipment.
Caution: The Liberator Reservoir should not be used adjacent to or stacked with other equipment
and that if adjacent or stacked use is necessary, the Liberator Reservoir should be observed to verify
normal operation in the configuration in which it will be used.
Table 1

Guidance and Manufacturer’s Declaration­—Electromagnetic Emissions

The Liberator is intended for use in the electromagnetic environment specified below. The customer or the user of the Liberator
should assure that it is used in such an environment..
Emissions Test
RF emissions
CISPR 11

ComplianceElectromagnetic Environment - GuidanceGroup 1

The Liberator uses RF energy only for internal function. Therefore, its
RF emissions are very low and are not likely to cause any interference innearby electronic equipment.

RF emissions CISPR 11

Class B

Harmonic emissions
IEC 61000-3-2

Not Applicable

Voltage fluctuations/
flicker emissions
IEC 61000-3-3

Not Applicable

12 - US PN MN234 J | User Manual

The Liberator is suitable for use in all establishments, including domestic
establishments and those directly connected to the public low-voltage
power supply network that supplies buildings used for domestic purposes.

Liberator
Table 2*: Recommended separation distances between portable and mobile RF communications equipment
and the Liberator
The Liberator is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or the user of the Liberator can help prevent electromagnetic interference by maintaining a minimum distance between portable andmobile RF communications equipment (transmitters) and the Liberator as recommended below, according to the maximum output
power of the communications equipment
Rated maximum
Separation distance according to frequency of transmitter
output power ofmtransmitterfrom 150 kHz to 80 MHz
from 80 MHz to 800 MHz
from 800 MHz to 2,5 GHz

d = 1.2√P
d = 1.2√P
d = 2.3√PW
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 testlevels and over specific frequency ranges and been found compliant with regulations.
Table 3: Guidance and Manufacturer’s Declaration—Electromagnetic Immunity
The Liberator is intended for use in the electromagnetic environment specified below. The customer or the user of the Liberator
should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment – guidanceElectrostatic discharge ±8 kV Contact±8 kV Contact
Floors should be wood, concrete or ceramic(ESD)
tile. If floors are synthetic, the relative humidity±2 kV, ±4 kV, ±8 kV,±2 kV, ±4 kV, ±8 kV,should be at least 30 %.**
±15kV air
±15kV air
IEC 61000-4-2
Not applicable
Electrical fast transient/±2 kV for power supply lines DC powered device
burst
Not applicable±1 kV for input/output lines Not applicable
IEC 61000-4-4
No data input/output lines
Surge±1 kV line(s) to line(s)Not applicableNot applicable±2 kV line(s) to earth
DC powered device
IEC 61000-4-5<5 % UT (>95 % dip in UT )for 0,5 cycle
Voltage dips, short in- 40 % UT (60 % dip in UT )terruptions and voltage for 5 cycles
variations on power
supply input lines
70 % UT (30 % dip in UT )IEC 61000-4-11
25 cycles

Not applicable
DC powered device

Not applicable

3A/m
50/60 HzPower frequency magnetic fields should be thatof a typical commercial or hospital environment.

<5 % UT (>95 % dip in UT )for 5 sec
Power frequency(50/60 Hz) magnetic
field
IEC 61000-4-8

3A/m
50/60 HzNOTE 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 theLiberator are found to be compliant with regulations.
PN MN234 J | User Manual US - 13

Liberator
Table 4: Guidance and Manufacturer’s Declaration—Immunity ME Equipment and ME Systems
Guidance and Manufacturer’s Declaration—Immunity
The Liberator is intended for use in the electromagnetic environment specified below. The customer or user of the
Liberator should ensure that it is used in such an environment.
Immunity Test

IEC 60601 Test Level

Compliance Level

Electromagnetic Environment—Guidance

Conducted RF IEC
61000-4-6

3 Vrms6 Vrms (In ISM Bands)
150 kHz to 80 MHz

Not applicable

Portable and mobile RF communications equipment should be used no closer to any part of
the Liberator, including cables, than the recommended separation distance calculated fromthe equation applicable to the frequency of thetransmitter.

Battery powered
device, No SIP/SOP

Recommended separation distanced = 1,2 √P
Radiated RF IEC
61000-4-3

80 MHz to 2.7 GHz

10 V/m80 MHz—2,7 GHz
80 % AM at 1 kHz

d = 1,2 √P
d = 2,3 √P
where P is the maximum output power ratingof the transmitter in watts (W) according to thetransmitter manufacturer and d is the recommended separation distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site surveya,
should be less than the compliance level in eachfrequency rangeb.
			Interference may occur in the vicinity of equipment marked with the following symbol:

Test frequency(MHz)

Banda)(MHz)

Servicea)

Modulationb)

385

380–390TETRA 400450

430–470

GMRS 460, FRS 460

Pulse modulationb)
18 Hz
FMC)
±5 kHz deviation
1 kHz sine

Maximum
power (W)Distance(m)

Immunity Test
Level (V/m)

1.8

0.3

27

2

0.3

28

710
745
780
810
870
930
1720
1845
1970

704–787

LTE Band 13, 17

Pulse modulationb)
217 Hz

0.2

0.3

9

800–960

GSM 800/900, TETRA
800, IDEN 820, CDMA
850, LTE Band 5

Pulse modulationb)
18 Hz

2

0.3

28

1700–
1900

GSM 1800; CDMA 1900;
GSM 1900; DECT; LTEBand 1, 3, 4, 25; UMTS

Pulse modulationb)
217 Hz

2

0.3

28

2450

2400–
2570

Pulse modulationb)
217 Hz

2

0.3

28

5240
5500
5785

Bluetooth, WLAN, 802.11
b/g/n, RFID 2450, LTE
Band 7

5100–
5800

WLAN 802.11 a/n

Pulse modulationb)
217 Hz

0.2

0.3

9

Note: If necessary to achieve the IMMUNITY TEST LEVEL, the distance between the transmitting antenna and theLiberator may be reduced to 1m. The 1m test distance is permitted by IEC 61000-4-3.
For some services, only the uplink frequencies are included.
The carrier shall be modulated using a 50% duty cycle square wave signal.
As an alternative to FM modulation, 50% pulse modulation at 18 Hz may be used because while it does not represent actual modulation, it
would be worst case.
abc

14 - US PN MN234 J | User ManualLiberator
NOTES

PN MN234 J | User Manual US - 15

www.c a ire inc .c om

CAIRE Inc.
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|MN234-J3~

10 Aug, 2023

MN234 J