i-Flow 6000 Series
User Manual

Copyright © Peak Scientific Instruments Ltd 2022 — i-Flow 6000 Series User Manual Rev 15 RSID 175 PN UM00018 EN —18/04/2022

Contents
Change History

3

How to use this Manual

3

Introduction

4

Technical Description

5

Basic Concept5i-Flow 6000 Model Number Breakdown

6

Warranties and Liabilities

7

Warranty & Liability Coverage

7

Safety Notices

9

EU Declaration of Conformity

10

Environmental Declaration

11

Technical Specification

12

Unpacking

14

Installation

15

Generator Environment

15

Generator

16

General Dimensions

16

Inlet / Outlet Connections

17

Unit Controls

17

Compressed Air Quality

18

Class 1 – Particulate

18

Class 2 – Water

18

Class 1 – Oil

18

Electrical Connection

20

Recommended Piping Layout

21

Commissioning & Safe Start-Up Sequence

22

Normal Operation

23

Safe Isolation Process23

Service Requirements

24Service Schedule

24

Peak Protected

25

Cleaning

26

Page 2

Change History
Rev

Comment

Name

Date

3

Declarations Update

L. Couttie

03/03/2017

4

Correction

L. Couttie

26/09/2017

5

Declarations Update

L. Couttie

10/10/2017

6

Declarations Update

L. Couttie

16/01/2018

7

Declarations Update

L. Couttie

15/01/2019

8

Update to Peak Gas Generation Branding

L. Couttie

26/09/2019

9
10
11
12
13

Air Quality Update
Declarations Update
Declarations Update
Declarations Update
Declarations Update

L. Couttie
L. Couttie
L. Couttie
L. Couttie
L. Couttie

10/12/2019
22/10/2020
04/11/2020
10/11/2020
18/12/2020

14

Declarations Update

D.Lai

12/10/2021

15

Declarations Update/ Image update

D.Lai

18/3/2022

How to use this ManualThis manual is intended for end users and has been written as a reference document
where you can skip to the relevant information.
Users can refer to the contents page to find the relevant information.
Please review each of the following sections carefully.
Thank you for selecting Peak Gas Generation to meet your gas generation needs, andshould you require any further assistance or support please do not hesitate to contact
Peak Gas Generation or the Peak Partner from which you purchased your generator.

Page 3

Introduction
The Peak Gas Generation i-Flow 6000 Generator is designed to cater for a wide variety
of industrial and scientific applications. Your generator will have been carefully selected
to meet your specific pressure, flow, and purity requirements, if you have any questions
regarding the sizing of your system please do not hesitate to contact Peak Gas
Generation or the Peak Partner from which you purchased your Generator.
Peak Gas Generation is a Trading Name of Peak Scientific Instruments Ltd. All Peak Gas
Generation products are manufactured by Peak Scientific Instruments Ltd.

Page 4

Technical Description
Basic Concept
The i-Flow is a modular range of Carbon Molecular Sieve (CMS) nitrogen gas
generators, that operate based on Pressure Swing Adsorption (PSA) technology.
Essentially this requires two separate columns or “beds” of granular carbon pellets.
The unit requires a compressed air supply to operate, ultimately works on very similar
principles to many standard air filtration / drying products. The inlet compressed air
is passed into the first “bed”, as the air passes across the carbon bed the oxygen isadsorbed, allowing the nitrogen to carry on through the bed for collection and further
use. After a certain time the online carbon bed will become saturated with oxygen so
the control system will operate various valves to bring the second carbon bed online.
Whilst the second bed comes online, the first bed is vented to atmosphere to release
the adsorbed oxygen and regenerate the bed in preparation for the next cycle. This willcontinue to alternate and repeat until the user stops consuming nitrogen.
Should the demand for nitrogen be less than the rated output flow, or indeed should
the demand stop, the generator will automatically go into ECO Mode and the front
panel LED will illuminate. In ECO mode the changeover of the columns is suspended
which will stop the consumption of inlet compressed air. The control system willautomatically detect when the demand resumes and the generator will start to produce
nitrogen again.

General Construction
The range consists of 10 different product sizesm, demonstrated below:

Base unit withminimum single
bank of dual
CMS columns.

Base unit withmaximum 10banks of dual
CMS columns.

The front end cabinet, control system and valves are consistent across the range. To
increase the outlet capacity, as you go up the range of generators, additional banks of
CMS columns will be added. (Note: for 6 to 10 banks additional vent valves and silencers are required and are fitted to the rear of the CMS columns)

Page 5

i-Flow 6000 Model Number Breakdown
Model Numbering

6

01

2

Peak Range
No. of Banks

01
02
03
04
05
06
07
08
09
10

Page 6

1 Bank2 Banks
3 Banks
4 Banks
5 Banks
6 Banks
7 Banks
8 Banks
9 Banks
10 Banks

Customer Option

0
1
2
3
4
5
6
7
8
9

None - Basic Unit
i-Flow - % Oxygen Analyseri-Flow - PPM Oxygen Analyser
Inlet/Outlet Filter - No Oxygen Analyser
Inlet/Outlet Filter - % Oxygen Analyser
Inlet/Outlet Filter - PPM Oxygen Analyseri-Flow Lab - % Oxygen Analyseri-Flow Lab - PPM Oxygen Analyser
Currently unassigned
Currently unassigned

Warranties and Liabilities
Warranty & Liability Coverage
1.

Peak warrants that, subject to the provisions in this statement, purchased Peak generators, whether
purchased directly from Peak or indirectly via an approved, certified and trained distributor or partner(referred to hereafter as a “Peak Partner”) will comply in all material respects with any specifications
referred to in your customer order confirmation and, subject to installation and operational guidelines
being followed as described in applicable product manuals, shall be free from any defects in qualityof materials or workmanship for a period of one year from the date of installation, provided this takes
place within 3 months of factory dispatch.

2. Where the purchased generator is from the Precision Hydrogen series, Peak further warrants that,
subject to installation and operational guidelines being followed as described in applicable productmanuals, the hydrogen cell shall be free from any defects in quality of materials or workmanship for a
total period of three years (inclusive of warranty period specified in clause 1) from date of installation,
provided this takes place within 3 months of factory dispatch.
3. Where the purchased generator is from the i-Flow 6000 series, Peak further warrants that, subject
to installation and operational guidelines being followed as described in applicable product manuals,
the generator shall be free from any defects in quality of materials or workmanship for a total periodof two years (inclusive of warranty period specified in clause 1) from the date of installation, provided
this takes place within 3 months of factory dispatch and the following provisions have also been met:a. you must purchase a service plan, ensuring the generator is serviced by Peak or a Peak Partner onor before the end of the first 12 months of your ownership, and serviced at least once during eachsubsequent 12 month period thereafter;b. the generator (and any associated equipment)
must have been commissioned by Peak or a Peak Partner;c. the feed air or inlet air supply to the generator must comply with ISO 8573-1:2010 Class 1.2.1 at all
times;
d. your air compressor, dryer, filtration and oil removal systems must be deemed suitable for use
by Peak or a Peak Partner, and must be changed and serviced regularly, in line with the equipment
manufacturer’s recommended guidelines; ande. any generator failure or fault that is deemed to have been caused by the failure of any upstream
equipment, component, part or system (such as air compressor, air treatment or filtration) will be
excluded from the warranty described herein.
4. Peak also warrants that any replacement parts whether purchased (directly from Peak, or via a PeakPartner) or supplied as part of any remedial action undertaken in line with the provisions of clauses 12
and 13, shall be free from any defects in quality of materials or workmanship for a period of 180 days
from the date of factory dispatch, provided its installation is performed by Peak or a Peak Partner.
5. This warranty does not exclude Peak’s liability in respect of any claim for death or personal injury
to any person, in so far as such can be attributed to negligence or breach of duty of care directly
resulting from failure of Peak to comply with the provisions in clauses 1, 2, 3 & 4.

Exclusions & Limitations
6. This warranty does not cover:a. damage, deterioration or malfunction resulting from an alteration or modification to a generator
which has not been carried out by Peak or a Peak Partner;b. damage, deterioration or malfunction resulting from what Peak reasonably believes to be abuse, or
misuse of a generator by you or any third party;c. liability for accident or neglect (other than pursuant to clause 5);d. maintenance or repairs which have not been carried out by Peak or a Peak Partner;e. operation of a generator or exposure of a generator to environmental conditions that fall out-with
operational guidelines as specified in the applicable product user manual; andf. lightning, power surges or any other acts of God or nature.
7.

This warranty is non-transferrable. Only the original owner of the generator may benefit from theterms within this statement.

Page 7

8. Peak shall not be liable in respect of any claim made for costs, damages, losses or expenses (whether
consequential, direct, indirect or otherwise) or in any respect howsoever arising including, but notlimited to, liability from accident or negligence (other than pursuant to clause 5) that may be sufferedby you or any third party.
9. No person or entity is authorised to change the terms and conditions outlined in this warranty
statement in any respect, or to create any additional obligations or liabilities for any party involved.
10. This warranty statement supersedes any and all prior warranty agreements between the parties andconstitutes the complete, final and exclusive understanding of the parties with respect to the subject
matter. All prior negotiations, representations, or promises, whether oral or written, of either party
shall be deemed to have been merged herein.
11. If any part of this warranty statement is invalidated, for whatever reason, such part will be deleted
and the rest shall remain unaffected, continuing to be in full force and effect.

Delivery of Warranty Service
12. Subject to clause 13, and:a. Peak being notified by you, within the duration of the applicable warranty period, of any defectthat you think is subject to any warranty valid under clauses 1, 2, 3 or 4; andb. Peak being permitted to inspect the generators, parts and their installation (along with any relevant
packaging)
Peak shall at its option repair or replace defective generators or parts (including, if necessary, any
moving parts and irrespective of runtime). No additional charges will apply, for parts or delivery and,
where applicable, labour or travel. Peak will endeavour to deliver this service within 3 working days ofyour notification.
13. Where, in Peak’s reasonable opinion, a defect is subject to an exclusion described in clause 6, Peakreserves the right to charge for parts or delivery and, where applicable, you may also be charged by
Peak for call out, labour or travel in respect of any repair or replacement which you authorize Peak tocarry out.

Page 8

Safety Notices
Peak Scientific Instruments cannot anticipate every possible circumstance which may
represent a potential hazard. The warnings detailed within this manual detail the most
known potential hazards, but by definition cannot be all inclusive. If the user employs
an operating procedure, item of equipment or a method of working which is not
specifically recommended by Peak Scientific, the user must ensure that the equipment
will not be damaged or become hazardous to persons or property.

Symbols
This manual uses the following symbols to highlight specific areas important to the safeand proper use of the Generator

WARNINGA WARNING notice denotes a hazard. It calls attention to an operating procedure,
process or similar, which if not correctly performed or adhered to, could cause
personal injury or in the worst case death. Do not proceed beyond a WARNING
notice until the indicated conditions are fully understood or met.

CAUTIONA CAUTION notice denotes a hazard. It calls attention to an operating procedure,
process or similar, which if not correctly performed or adhered to, could cause
damage to the Generator or the Application. Do not proceed beyond a CAUTION
notice until the indicated conditions are fully understood or met.
Caution, risk of electric shock. Ensure power to the Generator has been removed
before proceeding.

Safety Notice to Users

WARNINGWARNING

These instructions must be read thoroughly and understood before
installation and operation of your Peak i-Flow 6000 Generator. Use of
the Generator in a manner not specified by Peak Scientific MAY impair
the built in SAFETY features of the equipment.
When handling, operating or carrying out any maintenance, personnel
must employ safe engineering practices and observe all relevant local
health and safety requirements and regulations. The attention of UK
users is drawn to the Health and Safety at Work Act 1974, and theInstitute of Electrical Engineers regulations.
If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.

WARNINGWARNING

Page 9

Nitrogen is not a poisonous gas, but if its concentration in breathed
air becomes too high, there will be a risk of asphyxiation. Ensure that
adequate ventilation is provided for the surrounding area, (dependingon the operating specification and model selected the generator can
produce up to a maximum nitrogen flow of 4,250 L/min)EU Declaration of Conformity
We			

Peak Scientific Instruments Ltd.

Of			

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Hereby declare that, this declaration of conformity is issued under the sole
responsibility of the manufacturer.
Equipment:		

Pressure Swing Adsorption Gas Generator

Models:		

i-Flow 6000 Series & i-Flow O2 8000 Series

PED Module B Certificate No : CE 608102
PED Module D Certificate No : CE 608103
Pressure assembly consisting of the following key parts :Piping Spec or Description

Fluid

Phase

PED Hazard Cat.
Fluid

Chart

Cat

Quality Module

08-0700 CMS Assemblies(1 to 10 Model Dependant)

Air/N2

Gas

2G

2

II

B+D

3303560 Sieve Assemblies(1 to 6 model dependent)

Air/02

Gas

1G

1

II

B+D

Output Pressure Relief Valve

Air/N2/O2

Gas

2G/1G

2/1

IV

B+D

Front End Control Cabinet inc. associated valves & piping

Air/N2/O2

Gas

2G/1G

2/1

SEP

Not Applicable

To which this declaration relates, is in conformity with the following applicable EU
Directives, harmonized standards, and other normative requirements.
•

Low Voltage Directive 2014/35/EU
EN 61010-1: 2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use.

•

Electromagnetic Compatibility Directive 2014/30/EU
EN 61326-1: 2013 Electrical Equipment for Measurement, Control and Laboratory Use– EMC Requirements. (Class A)•

Restriction on the use of certain hazardous substances in electronic equipment(RoHS) Directive 2011/65/EU as amended by EU 2015/863.

•

FCC 47 CFR Part 15 class A
Unintentional radiators; Conducted and Radiated emissions limits.

Signed for and on behalf of Peak Scientific bySigned:				
Name:

Fraser Dunn

Position:

Design Engineering Manager

		Peak Scientific Instruments ltd,				Inchinnan, Renfrew, Scotland, 		
PA4 9RE, UK.

Date:		

30th Novermber 2021

Name and address of Notified body conducting
the PED conformity assessment :BSI Group The Netherlands B.V.
Say Building, John M Keynesplein 9,1066 EP , Amsterdam,
Netherlands
EC Number - 2797

UK Declaration of Conformity
Unit
is currently underWe			Peakaccreditation.
Scientific Instruments Ltd.
Of			

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Hereby declare that, this declaration of conformity is issued under the sole
responsibility of the manufacturer.
Equipment:		

Pressure Swing Adsorption Gas Generator

Models:		

i-Flow 6000 Series & i-Flow O2 8000 Series

PED Module B Certificate No : UKCA 753392
PED Module D Certificate No : UKCA 753395
Pressure assembly consisting of the following key parts :Piping Spec or Description

Fluid

Phase

PED Hazard Cat.
Fluid

Chart

Cat

Quality Module

08-0700 CMS Assemblies(1 to 10 Model Dependant)

Air/N2

Gas

2G

2

II

B+D

3303560 Sieve Assemblies(1 to 6 model dependent)

Air/02

Gas

1G

1

II

B+D

Output Pressure Relief Valve

Air/N2/O2

Gas

2G/1G

2/1

IV

B+D

Front End Control Cabinet inc. associated valves & piping

Air/N2/O2

Gas

2G/1G

2/1

SEP

Not Applicable

To which this declaration relates, is in conformity with the following applicable EU
Directives, harmonized standards, and other normative requirements.
•

Low Voltage Directive 2014/35/EU
EN 61010-1: 2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use.

•

Electromagnetic Compatibility Directive 2014/30/EU
EN 61326-1: 2013 Electrical Equipment for Measurement, Control and Laboratory Use– EMC Requirements. (Class A)•

Restriction on the use of certain hazardous substances in electronic equipment(RoHS) Directive 2011/65/EU as amended by EU 2015/863.

•

FCC 47 CFR Part 15 class A
Unintentional radiators; Conducted and Radiated emissions limits.

Signed for and on behalf of Peak Scientific bySigned:				
Name:

Fraser Dunn

Position:

Design Engineering Manager

		Peak Scientific Instruments ltd,				Inchinnan, Renfrew, Scotland, 		
PA4 9RE, UK.

Date:		

10th August 2021

Name and address of Notified body conducting
the PED conformity assessment :BSI Group The Netherlands B.V.
Say Building, John M Keynesplein 9,1066 EP , Amsterdam,
Netherlands
EC Number - 2797

WEEE Compliance Statement
The Waste Electrical and Electronic Equipment (WEEE) Regulations SI 2013 No 3113
and or the Waste Electrical and Electronic Equipment (WEEE) Directive 2012/19/EU
apply to all electrical and electronic equipment placed on the market in the UK and EU
covered by the scope of regulations which can be found in the Government GuidanceNotes (PDF) produced by the Department for Business Innovation and skills for the UK
and here for Europe.
All PEAK products that are subject to the WEEE directive are compliant with the
WEEE marking requirement. Such products are marked with the “crossed-out wheeliebin” symbol (shown below) in accordance with European standard EN50419. All
old electrical equipment can be recycled. Please do not dispose of any electricalequipment (including those marked with this symbol) in general rubbish bins. Pleasecontact your dealer or distributor for clarity.

Technical Specification
Environment
Minimum Operating Ambient Temperature
Maximum Operating Ambient Temperature
Maximum Altitude
Maximum Relative Humidity+5°C (41°F)+50°C (122°F)
2000m
80% non-condensing

When taken out of storage, the Generator should be allowed to acclimatize at room
temperature for a minimum of 3 hours before operation.
Compressed Air Supply
Depending on your specific application, the pressure and flow required from thecompressed air supply to the generator will vary. For your specific requirements
please refer to your quotation documents, or contact Peak Gas Generation for further
information. However all installations must meet the following conditions:
Minimum Air Quality
Minimum Inlet Air Pressure
Maximum Inlet Air Pressure
Minimum Inlet Air Temperature
Maximum Inlet Air Temperature

WARNINGIS0 8573-1:2010 class 1.4.1 or 1.2.1†
87 psig (6barg)
145 psig (10barg)+5°C (41°F)+35°C (95°F)

If you are in any doubt over the quality of your inlet compressed air DO
NOT CONNECT to the generator, and contact Peak Gas Generation or
the Peak Partner from which you purchased your Generator. Peak Gas
Generation can offer a full range of compressors and air preparationequipment if required, which can be backed up by our global service
support network.

It is the User / Installer’s responsibility to ensure the generator is connected to asuitably rated air supply, the air supply must also provide suitable protection to prevent
over pressurization of the Nitrogen Gas Generator.
Electrical Requirements
VoltageFrequency
Current
Input connection
Power cord (Supplied)
Pollution degree
Installation category
Transient Overvoltage

Page 13100 - 240 VAC ±10%50/60 Hz
2.0 – 1.0 A
C20 PlugC19 socket to local connection
2
Class I Protection
Category II

General
Model
Width mm(in)Height mm(in)Depth mm(in)Weight kg(lbs)
Shipping weight kg(lbs)
Noise level
Model
Width mm(in)Height mm(in)Depth mm(in)Weight kg(lbs)
Shipping weight kg(lbs)
Noise level

601*

602*

760(29.92)
197(433)
277(609)920(36.22)
282(620)364(801)

606*

607*

1560(61.42)
622(1368)
712(1566)

1720(67.72)
707(1555)
799(1758)603*
500 (19.68)
1738 (68.42)1080(42.52)
367(807)451(992)
59 dBA @ 1m
608*
500 (19.68)
1738 (68.42)
1880(74.02)
792(1742)
886(1949)
59 dBA @ 1m

604*

605*

1240(48.82)452(994)538(1184)

1400(55.12)537(1181)625(1375)

609*

610*

2040(80.31)877(1929)
973(2141)

2200(86.61)
962(2116)
1060(2332)† (NOTE: Selection is application dependent – please confirm suitability via your local technical specialist).

Page 14

Unpacking
Although Peak Gas Generation takes every precaution with safe transit and packaging,
it is advisable to fully inspect the unit for any sign of transit damage.
Check ‘SHOCKWATCH’ and ‘TIP-N-TELL’ labels for signs of rough handling prior to
unpacking.

Any damage should be reported immediately to the carrier and Peak Gas Generationor the Peak Partner from where the unit was purchased.

Page 15

Installation

WARNING

It is the user/installer’s responsibility to ensure that the generator
is located and protected against any external influences such as
vibration, shock, wind, snow loading, earthquake or fire. The installation
should conform to all local regulations and should be leak tight andcompleted by technically competent personnel.

Final Location of the generator should be carefully considered, the largest model in therange will weigh 1060 kg / 2332 lbs. Equipment is only to be installed on floor with aweight rating of min 1000kg/m2 or 200 lbs per Sq.ft.
Once in position the foot plate of the generator should be secured to the floor with
fixings suitable to the materials of construction of the floor. 13mm diameter holes
are provided adjacent to the levelling bolts to allow the unit to be fixed to the floor.
Depending on the generator model you will have 4 or 8 fixing positions. Typically 10mm
or 3/8” floor fixings approx. 75mm or 3” in length will be suitable on most concrete
floors.

Generator Environment

CAUTIONWARNING

Page 16

The Generator is designed for indoor use only. It should be installedadjacent to the application it is supplying. If this is not convenientthen the unit can be sited elsewhere, however, consideration should
be made of the lengths of pipe runs as pressure drops can result fromextended runs of pipe.
Consideration should be given to the location of the generator
to ensure it is protected from extreme fluctuations in ambient
temperature. Ensure that adequate ventilation is provided for thesurrounding area, (depending on the operating specification andmodel selected the generator can produce up to a maximum flowof 4,250 L/min). Installation in a confined space or poorly ventilated
space is not recommended, however if you choose to do so ambient
oxygen monitoring equipment is recommended.

Generator
General Dimensions

1738mm / 68.4”

500 mm / 19.7”760 mm / 29.9”

2200 mm / 86.6”

Note: Each additional bank assembly = 160mm / 6.3”
The Generator must always be placed on a level surface. Failure to do sowill affect the stability of the Generator.
WARNING

Page 17

Inlet / Outlet Connections
All of the Generator output ports are located on the output panel on the Left hand sideof the Generator. See below for recommended piping layout.
Power Inlet
Nitrogen Output¾” BSPAir Inlet 1” BSP

Tank Supply¾” BSP
Tank Return¾” BSP

Unit Controls

Pressure Gauge
Pressure Gauge

Control Screen
Pressure Gauge
Pressure Gauge
Power Switch
Eco mode LED
Service LED

Page 18

Compressed Air Quality
The i-Flow 6000 Generator is an air purification system, it does not generate any
gas pressure. Gas pressure is created and supplied to the generator by the user’s
compressed air system. It is the user / installer’s responsibility to ensure that allcomponents connected to the gas generator comply with local health and safety
regulations and that the compressed air system is suitably protected from overpressure, including appropriately sized safety relief devices for both the compressed air
and nitrogen process tanks.
No pressure greater than 10 barg should be applied to the inlet of theiFlow product.
WARNING

The i-Flow 6000 Generator will typically be the last stage in a complete aircompression and filtration system, the inlet air quality must meet a minimum of IS0
8573-1:2010 class 1.2.1. Class 1.2.1. is further defined as:Class 1 – Particulate
Per cubic meter of air the particulate count should not exceed 20,000 particles in the
0.1 to 0.5 micron range, 400 particles in the 0.5 to 1 micron range and 10 particles in the
1 to 5 micron range.

Class 2 – Water
A minimum pressure dewpoint (PDP) of -40°degC (-40°degF) is required, no liquidwater is permitted.

Class 1 – Oil
Per cubic meter of air the maximum permissible oil content is 0.01mg, total level for
liquid, aerosol and vapor.
A typical installation will consist of the following items:•

Oil Lubricated Screw – Air Compressor•

Compressed Air Storage Tank (with automatic condensate drain)•

Water Separator•

Pre-filter•

Active Carbon Filter•

Line Air Regulator•

Desiccant Air Dryer•

Dust Filter•

Active Carbon Tower•

Dust Filter•

i-Flow 6000 Series Nitrogen Generator•

Nitrogen Process Gas Tank

Page 19

Sizing of all components in this line will have a critical effect on the performance of
the Nitrogen Gas Generator, in particular the Nitrogen process Gas Tank. Please refer
to your quotation documents for details of the items we have recommended to meetyour specific requirements. Should you require any further assistance or support
please do not hesitate to contact Peak Gas Generation or the Peak Partner from which
you purchased your Generator. A full installation and commissioning service can beprovided through the Peak Global Service network.

Page 20

Electrical Connection
Connect the Generator to a single-phase AC voltage supply using the power cord
provided. The generator is fitted with an internal transformer that can accept any supply
from 100 to 240 volts AC. If the appropriate power cord is not supplied; a new plug, rated
to at least 5 amps, can be fitted by a qualified electrician.
DO NOT USE inadequately rated detachable Mains cords.

WARNING

This unit is classified as SAFETY CLASS 1. THIS UNIT MUST BE
EARTHED. Before connecting the unit to the mains supply, pleasecheck the information on the serial plate. The mains supply must be of
the stated AC voltage and frequency.

EARTH/GROUND (E):-		

Green & Yellow

or

Green

LIVE (L):-				

Brown

or

Black

Neutral (N):-			

Blue

or

White

		

If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment maybe impaired.
WARNING

Page 21

Recommended Piping Layout
To allow proper operation and commissioning of the generator it is important toinclude bypass valves at the generator inlet / nitrogen outlet of the system. It is also
recommended that a non-return valve be fitted on the exit of the system to prevent
downstream pressure from returning to the system and damaging the generator. Pleasesee below for recommended piping layout.

Page 22

Commissioning & Safe Start-Up Sequence
With reference to the diagram in the Recommended Piping Layout section.
Once the generator has been installed, DO NOT Switch on the power immediately. It is
recommended that the inlet compressed air supply valve (1) remains closed, and thatthe inlet bypass valve (2) is opened slightly to sufficiently allow the inlet compressed
air to vent and purge any remaining moisture from the newly installed pipework (if thisis the first operation of the compressed air supply, it is recommended that the air bevented for a minimum of 2hrs to allow the air filtration and dryer to stabilise).
Once the inlet pipework has been purged, the inlet bypass valve (2) can then be
closed and the pressure gradually introduced to the generator by slowly opening
the compressed air inlet (1) valve. The outlet bypass valve (3) should now be open toatmosphere, and the delivery valve (4) to the customer application should be closed.
Ensure that both Process Tank Isolation valves (5) are both fully open.
The power can then be turned on. On first start up air will be introduced to Column
1 and the front panel gauge will slowly start to rise. The front panel display will show
a message “COLUMN 1” and a timer counting up. After approx. 30 to 80 seconds(timing will vary depending on your specific performance requirements) the front panel
display will briefly show an “EQUALIZING” message and the pressure on Column 1 and
2 gauges should level out. Column 1 will then vent rapidly to zero and column 2 willcontinue to rise slowly. During this process the TANK pressure gauge should continue
to slowly rise. Allow the Nitrogen Process Gas Tank to reach pressure, then continue
to vent the outlet gas through the bypass valve (3) for a minimum of 4 hours (ideallythis should be done overnight to fully purge all the remaining oxygen/moisture in thesystem).
The Generator has been pre-set in the factory to give the specified output flow-rate
and pressure. Failure to achieve the factory specification after maintenance may be asa result of an incorrect service procedure, please review any maintenance carried out.
If unable to achieve specification contact Peak Gas Generation for further assistance.
After this time the outlet bypass valve (3) can be closed, and the delivery valve (4) tothe customer application should be slowly opened to pressurize the line.
The design of the generator is that it will deliver up to your specific output pressure andflow of nitrogen. Should the demand for Nitrogen be less than the rated output flow,
or indeed should the demand stop the generator will automatically go into ECO Modeand the front panel LED will illuminate. In ECO mode the changeover of the columns issuspended which will stop the consumption of inlet compressed air. The control system
will automatically detect when the demand resumes and the generator will start toproduce nitrogen again.

Page 23

Normal Operation
The i-Flow 6000 Gas Generator is designed specifically to minimize operator
involvement. As long as the system is installed as described in earlier sections and isserviced in accordance with the specified maintenance recommendations (see Service
Requirements), then it should simply be a matter of turning the Generator on. Note: thegenerator will only produce nitrogen gas based on demand, so should typically be leftin a powered state, live compressed air supply. If the system is shutdown, or suffers apower failure, it will restart automatically. However, if left without inlet air pressure for a
prolonged period and the Nitrogen Process tank is allowed to vent all pressure, then thecommissioning process above should be repeated to purge the oxygen from the systembefore high quality nitrogen gas can be produced again.
The Generator will automatically produce the factory set flow and pressure.

WARNINGWARNING

Note: The side panels of the generator should not be removed during
operation unless you have received training and are technicallycompetent to manage the potential risks present. Located inside thecabinet are the vent silencers and safety relief valve, which periodicallyrelease gas at pressure and could cause injury.
Inspection plugs are located on the rear and top of the generator.
These plugs must NOT be removed whilst the system is under pressure.
If removed, it is likely that pressure will be released violently and cause
injury.

Safe Isolation Process
To shut the system down, close the inlet air supply valve (1), BUT leave the electrical
power on to the generator. Close the nitrogen outlet valve (4) to the application, andslowly open the bypass / commissioning valve (3) to allow the nitrogen product gas
to vent to atmosphere. NOTE: do not isolate the Process Tank valves (5) as this willtrap pressure in the tank. For the product to be completely safe to continue work, ALL
pressure must be fully dissipated. Ensure ALL front panel gauges read zero before
turning off the power on the front panel and removing the mains cord from the left
hand side of the generator before proceeding. Note: Due to the nature of the Carbon
Molecular Sieve it could take considerable time for the generator to release all thetrapped oxygen. The bypass valve (3) should remain open at all times, allowing the CMS
to release oxygen and pressure can build again if closed.
Once service operations have been completed, the generator can be re-connected tothe mains supply and the Commissioning process described in earlier sections should
be repeated.
Due to the simplicity of the design and the small number of moving parts the i-Flow
6000 Series Nitrogen Generators will have a long and trouble free life. However as withall scientific and technical equipment it should be regularly inspected and serviced as
below.

Page 24

Service Requirements
Service Schedule
Quantity.
Purchase Interval

12 months

Component

Part No.

Vent Silencer Element

601*-605*

606*-610*

02-57102

4

Pneumatic Valve Exhaust Silencer

02-10165

7

N2 Supply NRV

02-5620

2

2

O2 Analyser %*04-4571

1

1

O2 Analyser PPM*

04-45721

1

48 months*Analyzer service is dependent on selected model.

Page 25

Peak ProtectedWith Peak Gas Generation you invest in not only a product but peace of mind. With a
network of certified Peak engineers stationed throughout the globe, Peak’s rapid response
team are never far away and our commitment is to keep your generator running day in, dayout, protecting your productivity.

[Peak Protected] can provide…

Installation

A dedicated Peak engineer will visit
your site to install and setup yourgenerator

IQ/OQ

Certified assurance for applications
requiring documented qualification

Complete plan

Swift response by a Peak Service
Engineer within 72 hours & planned
preventative maintenance

SparesGenuine Peak parts with expressdelivery, ensuring optimal
performance and lifetime

Premium Protected

Guaranteed rapid on-site response
within 24 hours & planned
preventative maintenanceTechnical Support Hotline

Around the clock support by phoneor online with our global technicalhelpdesk

To find out more about protecting your investment visit: www.peakscientific.com/protected

Page 26

Cleaning
Clean the outside of the Generator only using warm soapy water and a clean damp
cloth. Ensure the cloth is thoroughly rung out to remove excess fluid prior to use. Do
not use decontamination or cleaning agents that could cause a HAZARD as a result of areaction with parts of the Generator or material contained within it. If there is any doubt
about the compatibility of decontamination or cleaning agents please contact yourPeak Gas Generation representative.
Cleaning should only be undertaken with the power switched off andthe power cord removed from the rear of the generator.

CAUTION

Under no circumstances should any solvents or abrasive cleaning
solutions be used as these can contain fumes that could be harmful tothe generator.
Care should be taken with Leak Detections Liquids.

CAUTION

Page 27

Go Online or Complete and Return
We know that registering any of your recently purchased products is not thefirst thing on your mind- but it is very important to both of us. Not all warranties
are alike and Peak Gas Generation stand out against other gas suppliers as weoffer a comprehensive, quick response, on-site warranty. This means that in thevery unlikely case that your gas develops a fault we have rapid support teams
on-hand around the world who are able to come to your lab and get you backup and running in no time.
Register for your comprehensive 12 month on-site warranty with ease online atwww.peakscientific.com/protected.
Alternatively, you can send the completed form to Peak Gas Generation by postor email at warranty@peakscientific.com.

Go Online or Complete and Return
You can register for your FREE 12 month Warranty with ease online atwww.peakscientific/protected.
Alternatively, you can send the completed form to Peak Scientific by post or
email at warranty@peakscientific.com.

Product Warranty Registration
Contact name
Email addressCompany
Address
City/town
PostcodeCountry
Telephoneserial #Model typeInstallation date
Do you still use analternative gas solution i.e.
cylinders or bulk liquid?

Yes

What gas requirements do
you have in your lab?

HydrogenNo

NitrogenZero Air

Extend your cover with
Peak Scientific offer comprehensive gas after sales support packages. Peak[Protected] aftercare support can guarantee an on-site response within 72
hours*, genuine parts from our ISO9001 approved factory and a 95% first-time fix
rate. See our enclosed Peak [Protected] leaflet for further information.
Important!
You have 1 month to register your Peak Scientific product from the date of installation. Once registered
the warranty will be honoured for a period of 12 months. If you wish to defer the installation of your, you must notify Peak Scientific immediately by emailing warranty@peakscientific.com. For s thatremain unregistered after 1 month from the shipment date, the warranty will be considered active fromthe date of factory dispatch.
* Complete Plan only






Important!
You have 1 month to register your Peak Gas Generation product from the dateof installation. Once registered the warranty will be honoured for a period of 12months. If you wish to defer the installation of your generator, you must notify
Peak Gas Generation immediately by emailing warranty@peakscientific.com.
For generators that remain unregistered after 1 month from the shipment date,
the warranty will be considered active from the date of factory dispatch.
Page 28

CSA Compliance Statement
CSA Group (Canadian Standards Authority) is a Nationally Recognised Testing
Laboratory (NRTL), headquartered in Toronto Canada.
They are authorised to evaluate product to both their own and Underwriters Laboratory(UL) standards and certify the product to be in compliance to the relevant standards.
Peak products are certified to the current in force revision of the following standards
in order to cover both Canadian and United States requirements for “Safety
Requirements for Electrical Equipment for Measurement, Control and Laboratory use,
Part 1: general Requirements”.
Canada:		

CAN/CSA C22.2 No 61010-1-12

United States:

UL 61010-1

As a result the products covered by this statement are certified and listed by CSA
accordingly and are entitled to carry the CSA mark with both Canadian and UnitedStates subscripts , as shown below on the product rating label.

Peak Gas Generation gas generators define the benchmark in reliability, convenience and performance infacilities around the world, and come backed by a 12 month on-site warranty. Beyond this period however you can ensure that your investment continues to be [Protected] by our comprehensive generator
care cover.
Our world-class aftercare support packages deliver a program of scheduled preventative maintenancewhilst giving you the reassurance of instant access to worldwide technical support and priority on-site
response in the untimely event of a breakdown.

Peak Gas Generation
Fountain Crescent
Inchinnan Business Park
Inchinnan
PA4 9RE
Scotland, UK
Tel: +44 141 812 8100
Fax: +44 141 812 8200
For further information on any of ourgenerator products please contact
contact@peakgas.com
Copyright © Peak Scientific Instruments Ltd 2022 — i-Flow 6000 Series User Manual Rev 15 RSID 175 PN UM00018 EN —18/04/2022