i-Flow 7000 Series - User Manual  

Extracted text

i-Flow 7000 Series N2 Generators
User Manual

Copyright © Peak Scientific Instruments Ltd 2023 — i-Flow 7000 Series User Manual Rev 5 RSID 4707 PN UM-0029 EN —09/11/2023

Register Product to Operate
To begin operation you will need to register your generator. You can do so by
visiting www.peakscientific.com/activate or by downloading the Peak Genius
App.
Registering will activate your 2 year warranty* - covering every single
component in your generator.






Important!
You must register your generator before nitrogen generation can commence. In
order to be eligible for warranty your generator must be registered to the end
user (not a reseller or distributor) and must have a paid annual preventative
maintenance arranged within 13 months of the installation date & carried out by
a Peak approved Field Service Engineer. Once registered the warranty will be
honoured for a period of 24 months.**
* 2nd year warranty subject to completion of preventative maintenance visit arranged within 13 months of installtion.
For terms and conditions please visit www.peakscientific.com/warranty-statement/
** Call out and labour charges may apply where generator was not purchased directly from Peak

Page 2

Contents
Change History
Introduction
Technical Description
Basic Concept
i-Flow 7000 Series Model Number Breakdown
Warranties and Liabilities
Warranty & Liability Coverage
Safety Notices
Symbols
Safety Notice to Users
EU Declaration of Conformity
UKCA Declaration of Conformity
CSA Compliance Statement
WEEE Compliance Statement
European Union (EU) and United Kingdom (UK) Class A Compliance statement
FCC Class A Compliance Statement
Industry Canada Class A emission compliance statement
Korea Communications Commission (KCC) statement
Technical Specification
Unpacking
Installation
Generator Environment
Generator Overview
i-Flow Mini General Dimensions
Overview
General Dimensions
Generator Overview
i-Flow Prime General Dimensions
Overview
General Dimensions
Inlet / Outlet Connections
Recommended Piping Layout
Compressed Air Quality
Class 2 – Particulate
Class 4 – Water
Class 1 – Oil
Electrical Connection
Electrical Connections
Product Registration
Home Screen
Information Screen
Settings Screen
Service Screen
Screen Warning Icons
Commissioning & Safe Start-Up Sequence
Normal Operation
Shortcycling – Bypass Active
Normal Operation
Standby
Refreshing – Bypass Active
Safe Isolation Process
Service Requirements
Service Schedule
Service Indication
Peak Protected
Cleaning
Error Messages
Troubleshooting

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Change History
Rev

Comment

Name

Date

3

Flow Updates

L. Couttie

05/09/2023

4

Declarations Update

L. Couttie

03/10/2023

5

Text Update

L. Couttie

09/11/2023

How to use this Manual
This 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 to meet your gas generation needs, should you require
any further assistance or support please do not hesitate to contact Peak or the Peak
Partner from which you purchased your generator.

Page 4

Introduction
The Peak Gas Generation i-Flow 7000 Series Nitrogen Generators are designed to
cater for a wide variety of industrial and scientific applications. The range consists of 2
generator size variants - namely, the N2 Mini & N2 Prime. Your generator will have been
carefully selected to meet your specific pressure, flow, and purity requirements, that
were specified at time of initial scoping & subsequently agreed upon. if you have any
questions regarding the specifications 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 5

Technical Description
Basic Concept
i-Flow N2 Mini & N2 Prime are a range of modular nitrogen gas generators, that operate
based on the latest Pressure Swing Adsorption (PSA) technology, utilising a Carbon
Molecular Sieve (CMS) to extract nitrogen from air, at the specified flow, purity &
pressure. This process essentially requires two separate columns or “beds” of granular
carbon pellets of suitable grade.
A unit requires a compressed air supply to operate and ultimately works on very similar
principles to many standard air filtration / drying products. The inlet compressed air is
passed into the first carbon “bed”, as the air passes across the carbon bed the oxygen
is adsorbed, allowing the nitrogen to carry on through 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 safely vented to atmosphere to release
the adsorbed oxygen and regenerate the bed in preparation for the next cycle. This will
continue 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 Standby Mode and this will
be indicated on the front HMI screen. In Standby mode the changeover of the columns
is suspended which will stop the consumption of inlet compressed air. The control
system will automatically detect when the demand resumes and the generator will start
to produce nitrogen again.

General Construction
The range consists of 14 different product sizes, demonstrated below:

i-Flow N2 Mini

Base unit with
minimum single
bank of dual
CMS columns.

Page 6

Base unit with
maximum 4
banks of dual
CMS columns

i-Flow N2 Prime

Base unit with
minimum single
bank of dual
CMS columns.

Base unit with
maximum 10
banks of dual
CMS columns

The front end cabinet, control system and valves are consistent across the entire range.
To increase the outlet capacity, as you go up the range of generators, additional banks of
CMS columns can be added. (Note: Mini models with 3-4 & Prime models with 5-10 banks
require additional vent valves & silencers fitted to the rear of CMS column assembly).

i-Flow 7000 Series Model Number Breakdown

7

Model Class

X

X

X

XX

Mini
Prime

Series Name

Customer Option

No. of Banks
Mini = 01-04

O2 Sensor Type

Prime = 01-10

1 = 0.5-5%
2 = 500-1000 PPM
3 = 5-100 PPM

Page 7

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 quality
of 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 product
manuals, 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, 7000, 8000 or 9000 series and /or i-Flow
skidded solution, 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 period of 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 on
or before the end of the first 12 months of your ownership, and serviced at least once during each
subsequent 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 the minimum ISO 8573-1:2010 air
class, as specified within relevant product user manual, 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; and
e. 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 Peak
Partner) 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; and
f. 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 the
terms within this statement.

Page 8

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 not
limited to, liability from accident or negligence (other than pursuant to clause 5) that may be suffered
by 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 and
constitutes 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 defect
that you think is subject to any warranty valid under clauses 1, 2, 3 or 4; and
b. 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 of
your notification.
13. Where, in Peak’s reasonable opinion, a defect is subject to an exclusion described in clause 6, Peak
reserves 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, or
a Peak approved partner to carry out.

Page 9

Safety Notices
Peak Gas Generation 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, 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 safe
and proper use of the Generator

WARNING

A 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.

CAUTION

A 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

WARNING

WARNING

These instructions must be read thoroughly and understood before
installation and operation of your Peak i-Flow 7000 Series Gas
Generator. Use of the Generator in a manner not specified by Peak Gas
Generation 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 the
Institute 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.

WARNING

WARNING

Page 10

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,
(depending on the operating specification and model selected the
generator can produce up to a maximum nitrogen flow of 5,590 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 Type:

Nitrogen Generator

Model Designator:

i-Flow 7000 & 9000 Series

PED Module B Certificate No : CE 744518
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

600mm Column Assembly
(1 to 10 Model Dependant)

Air/N2

Gas

2G/1G

2/1

II

B+D

1700mm Column Assembly
(1 to 6 model dependent)

Air/02

Gas

2G/1G

2/1

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/ A1:2019 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)

•

Pressure Equipment Directive 2014/68/EU
Design and Construction Standards applied: ASME Section VIII Division 1 2019
Edition and BS EN12392:2016. Conformity Assessment Procedure: B+D

•

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

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

Fraser Dunn

Position:

Design Engineering Manager



Peak Scientific Instruments ltd,




Inchinnan, Renfrew, Scotland,
PA4 9RE, UK.

Date:
Page 11

1st June 2022

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

UKCA 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 Type:
Nitrogen Generator
Model Designator:
i-Flow 7000 & 9000 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/1G

2/1

II

B+D

3303560 Sieve Assemblies
(1 to 6 model dependent)

Air/02

Gas

2G/1G

2/1

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.
•

The Electrical Equipment (Safety) Regulations 2016 (SI 2016 / 1101) as amended.
BS61010-1:2010 / A1:2019 Safety Requirements for Electrical Equipment for
Measurement Control and Laboratory Use.

•

The Electromagnetic Compatibility Regulations 2016 (SI 2016 / 1091) as amended.
BS61326-1:2013 Electrical Equipment for Measurement, Control and Laboratory Use EMC Requirements.

•

The Pressure Equipment (safety) Regulations 2016 (SI 2016 / 1105) as amended.
Design and Construction Standards applied: ASME Section VIII Division 1 2019
Edition and BS EN12392:2016. Conformity Assessment Procedure: B+D

•

The Restriction of the Use of Certain Hazardous Substances in Electrical and
Electronic Equipment Regulations 2012 (SI 2012 / 3032) as amended.

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

Fraser Dunn

Position:

Design Engineering Manager



Peak Scientific Instruments ltd,




Inchinnan, Renfrew, Scotland,
PA4 9RE, UK.

Date:
Page 12

1st June 2022

Name and address of Notified body conducting
the PED conformity assessment :
BSI Assurance UK Ltd
Kitemark Court Davy Avenue Knowlhill
Milton Keynes MK5 8PP
United Kingdom
UKMCAB Number - 0086

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 United
States subscripts , as shown below on the product rating label.

Page 13

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 Guidance
Notes (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 wheelie
bin” symbol (shown below) in accordance with European standard EN50419. All
old electrical equipment can be recycled. Please do not dispose of any electrical
equipment (including those marked with this symbol) in general rubbish bins. Please
contact your dealer or distributor for clarity.

Page 14

EMC Class A Compliance Statements
European Union (EU) and United Kingdom (UK) Class A Compliance
statement
This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.

FCC Class A Compliance Statement
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.

Industry Canada Class A emission compliance statement
This ISM device complies with Canadian ICES-001 (A).
Cet appareil ISM est conforme à la norme NMB-001 (A) du Canada.

Korea Communications Commission (KCC) statement

이 기기는 업무용(A급)으로 전자파적합기기로
서 판매자 또는 사용자는 이 점을 주의하시기
바라며, 가정외의 지역에서 사용하는 것을 목
적으로 합니다.
(This is electromagnetic wave compatibility equipment for business (Type A). Sellers
and users need to pay attention to it. This is for any areas other than home.)
Page 15

Technical Specification
Environment
Minimum Operating Ambient Temperature
Maximum Operating Ambient Temperature
Maximum Altitude
Maximum Relative Humidity

+5°C (41°F)
+50°C (122°F)
3000m
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 the
compressed 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

WARNING

IS0 8573-1:2010 class 2.4.1
87 psig (6barg)
145 psig (10.0 barg)
+5°C (41°F)
+45°C (113°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 preparation
equipment if required, which can be backed up by our global service
support network. If incorrect air quality is used, resulting in damage to
the generator, the warranty becomes void.

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

Page 16

100 - 240 VAC ±10%
50/60 Hz
2.0 – 1.0 A
C20 Plug
C19 socket to local connection
2
Class I Protection
Category II

General
i-Flow Mini
Width mm(in)
Height mm(in)
Depth mm(in)
Weight kg(lbs)
Shipping weight kg(lbs)
Noise level
i-Flow Prime
Width mm(in)
Height mm(in)
Depth mm(in)
Weight kg(lbs)
Shipping weight kg(lbs)
Noise level
i-Flow Prime
Width mm(in)
Height mm(in)
Depth mm(in)
Weight kg(lbs)
Shipping weight kg(lbs)
Noise level

Page 17

1 Bank

830 (32.7)
96 ( 211)
115 (253)

2 Banks

3 Banks

418 (16.5)
853 (33.6)
992 (39.1)
1154 (45.4)
132 (291)
178 (392)
153 (337)
202 (444)
59 dBA @ 1m

1 Bank

2 Banks

730 (28.7)
179 (394)
203 (447)

892 (35.1)
257 (566)
285 (627)

6 Bank

7 Banks

1540 (60.6)
579 (1274)
620 (1364)

1702 (67.0)
657 (1446)
701 (1542)

3 Banks
418 (16.5)
1953 (76.9)
1054 (41.5)
335 (737)
366 (805)
<80dBA @ 1m
8 Banks
418 (16.5)
1953 (76.9)
1864 (73.4)
735 (1617)
783 (1723)
<80dBA @ 1m

4 Banks

1316 (51.8)
214 (471)
240 (528)

4 Banks

5 Banks

1216 (47.9)
413 (909)
447 (984)

1378 (54.3)
501 (1102)
539 (1186)

9 Banks

10 Banks

2026 (79.8)
813 (1789)
864 (1901)

2188 (86.1)
891 (1960)
945 (2079)

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 Generation
or the Peak Partner from where the unit was purchased.

Page 18

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 and
completed by technically competent personnel.

Final Location of the generator should be carefully considered, the largest model in
the range will weigh 891 kg / 1920 lbs. Equipment is only to be installed on floor with a
weight rating of min 1200kg/m2 or 245lbs per Sq.ft.
Once in position the foot plate of the generator must be bolted to the floor using
fixings suitable for the material construction of the floor. 13mm diameter holes are provided
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.
The generator should be situated in a well ventilated environment and should be
positioned such that it can be easily disconnected from the mains supply if required.
Taking into account the required Inlet air filtration and outlet buffer tank, expected
enclosed room size should not be less than 2.5 x 3.0 x 2.5 M or 18.75 cubic meters.
Depending on the required outlet purity & pressure the generator can produce anything
between 11 and 5,590 l/min of Nitrogen. To ensure adequate ventilation the air flow
through the room in which the generator is installed should as a minimum match the
output of the installed generator in ltr/min.
This is a heavy item a minimum of 2 people are required to unpack and handle it and
appropriate safe handling practise and equipment should be used when unpacking and
moving to its final install location.

Generator Environment

CAUTION

WARNING

Page 19

The Generator is designed for indoor use or can be housed in a
suitable weatherproof enclosure. It should be installed adjacent to the
application it is supplying. If this is not convenient then the unit can be
sited elsewhere, however, consideration should be made of the lengths
of pipe runs as pressure drops can result from extended 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 the
surrounding area, (depending on the operating specification and
model selected the generator can produce up to a maximum flow
of 5,590 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 Overview
i-Flow Mini General Dimensions
830 mm / 32.7”

853mm / 33.6”

418 mm / 16.4”

1316 mm / 51.8”

Note: Each additional bank assembly = 162mm / 6.4”
The Generator must always be placed on a level surface. Failure to do so
will affect the stability of the Generator.
WARNING

Page 20

Generator Overview
i-Flow Prime General Dimensions

1953mm / 76.9”

418 mm / 16.4”

730 mm / 28.7”

2188 mm / 86.1”

Note: Each additional bank assembly = 162mm / 6.4”
The Generator must always be placed on a level surface. Failure to do so
will affect the stability of the Generator.
WARNING

Page 21

Inlet / Outlet Connections
The i-Flow 7000 Series generators can be piped (air inlet and gas outlet) from either
side to suit site/ location. The unit will be supplied with two blanking plugs which can
be installed in either the left or right hand ports to allow the opposite side to be used.

i-Flow Mini i-Flow Prime

Compressed
Air Inlet
1/2” F BSP
N2 Outlet

Air Inlet

Compressed
Air Inlet
3/4” F BSP

Nitrogen
Outlet
1/2” F BSP
N2 Outlet

Page 22

Nitrogen
Outlet
3/4” F BSP

Air Inlet

Recommended Piping Layout
To allow for proper operation and commissioning of the generator it is important to
include isolation and vent valves at the locations displayed below, the i-Flow 7000
Series generators can be piped (air inlet and gas outlet) from either side to suit site/
location. Please see below for recommended piping layout.

Page 23

Compressed Air Quality
i-Flow 7000 series nitrogen generators are air purification systems & don’t generate
any gas pressure themselves. 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 all components connected to the gas generator comply with local health and
safety regulations and that the compressed air system is suitably protected from over
pressure, including appropriately sized safety relief devices for both the compressed air
and nitrogen process tanks.

WARNING

No pressure greater than 10 barg should be applied to the inlet of the
i-Flow N2 generator. If incorrect air quality is used, resulting in damage
to the generator, the warranty becomes void.

i-Flow 7000 series nitrogen generators will typically be the last stage in a complete
air compression and filtration system, the inlet air quality must meet a minimum of IS0
8573-1:2010 class 2.4.1 or higher. Class 2.4.1 is defined as.

Class 2 – Particulate
Per cubic meter of air the particulate count should not exceed <400,000 particles
in the 0.1 to 0.5 micron range, <6000 particles in the 0.5 to 1 micron range and <100
particles in the 1 to 5 micron range.

Class 4 – Water
A minimum pressure dewpoint (PDP) of +3°C is required, no liquid water 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 could consist of the following items:
•

Oil-Free / Oil-Lubricated Air Compressor

•

Wet Air Receiver (with condensate drain)

•

Water separator

•

Bulk liquid / Particulate Filter

•

Refrigerant Air Dryer

•

Desiccant Air Dryer (optional)

•

Activated Carbon Tower (optional)

•

In Line Filtration (coalescing / aerosol / oil vapour)

•

i-Flow Nitrogen Gas Generator

•

Nitrogen gas receiver/storage tank

Sizing of all components in this line will have a critical effect on the performance of the
Nitrogen Gas Generator. Please refer to your quotation documents for details of the
items we have recommended to meet your 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 be provided through the Peak Global Service network.
Page 24

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.

WARNING

This unit is classified as SAFETY CLASS 1. THIS UNIT MUST BE
EARTHED. Before connecting the unit to the mains supply, please
check 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

WARNING

If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment maybe impaired. If an
appropriate mains power cords is not supplied or a substitute one
is used then ensure that all components of it the plug, cord and
connector have adequate ratings for the generator and appropriate
approvals for the country of use. Failure to do so could cause damage
to the generator or risk overloading of the power cord.

Electrical Connections
Optional Communication
Port

Optional Dewpoint
Sensor
Optional Flow
Sensor
Optional Remote Start /
Fault indication

Mains Power
Inlet
Power Switch

Page 25



Product Registration
Before the generator will start up for the first time the user must enter a unique 4-digit
PIN code.
To receive your generator’s unique PIN code, please register on the Peak website www.
peakscientific.com/activate or download the Peak mobile app from the Google Play Store
or Apple App Store. A PIN code may also be requested by phoning the Peak helpdesk.
This code is only required on the initial start-up of the unit.
1. Press the ‘I’ve got my pin’ icon on the screen on the front of the generator.

2. Enter your PIN.

3. The unit will then go through initialisation.

4. Upon completion of the initialisation phase, the screen will display the below, Home
screen

Page 26

Home Screen
This is the Main Home page screen at first startup
of the system. Error Icon in the top right of the
screen is Normal, as pressure will be low and O2
content will be high. Touching the red triangle icon,
will take you to the error page. In the bottom green
bar the system status will be shown on the left side
and the current cycle time on the right side.

This is the second page of the home screen,
showing the additional and optional sensor
readings. This screen is accessed by the green
arrow on the right hand side of the main Home
Screen, to return press the green arrow on the left
hand side of this screen.

Information Screen

This is the Main Information Screen showing the
information specific to this system, pressing the
green arrow on the right takes you to the second
page.

This is the second Information Screen showing the
Running hours:
Service: the number of days till the next service is
due to be completed. Starting at 365 and counting
down to 0.
Production: the number of days of Gas production
i.e. power ON and NOT in Standby.
Generator: Generator age in days regardless of
operating mode.

This is the third Information Screen showing the
Active Error messages, if no Errors are currently
Active, this page will be blank.

Page 27

Settings Screen

This is the Settings Screen where displayed
language can be selected.

Service Screen
This is the Service Lock Screen – only trained and
authorised engineers will have the ability to enter a
PIN code and access generator settings and parameters. If the wrong PIN is entered too many times
the screen will lock.

If the incorrect PIN has been entered to many times
the screen will lock for 10min, operation of the
system will continue during this period.

Page 28

Screen Warning Icons

The Red warning triangle in the top right corner of
the screen, indicates a fault condition is active on
the system. Pressing the icon will take you to the
Error page which will include a full description of
the fault.

The Yellow Spanner in the top right corner of the
screen, indicates that the system is due to be serviced
in the next 30days, an early warning to allow you time
to schedule a visit with your trained and authorised
service provider. Pressing the Spanner icon will take
you to the Running Hours screen where you can see
the actual number of days remaining.

The Red Spanner in the top right corner of the
screen, indicates that the system is overdue service.
Please schedule a visit with your trained and
authorised service provider as soon as possible to
ensure continuous trouble free operation.

Page 29

Commissioning & Safe Start-Up Sequence

WARNING

WARNING

Note: The side panels of the generator should not be removed during
operation unless you have received training and are technically competent
to manage the potential risks present. Located inside the cabinet are the
vent silencers and safety relief valve, which periodically release gas at
pressure and could cause injury.
Blank plugs are fitted to the inlet and outlet service ports on the sides of
the generator which are not connected by pipework, these must NOT be
removed. If removed while the system is under pressure the pressure will
be released violently and cause injury.

With reference to the diagram in the Recommended Piping Layout section.
Once the generator has been installed ensure valves (1,2,3,4,6 & 7 on piping diagram) are in the
CLOSED position, Valve 5 only should be in the OPEN position. Note: if you are re-starting the
sysem after routine service, there should be pressure in the outlet tank and valve 5 should be
opened slowly.
Open Air inlet isolation valve (1) and slightly open Air inlet purge/vent valve (2) to allow the
compressed air to sufficiently purge any moisture from the newly installed pipework. (if this is
the first operation of the compressed air supply, it is recommended that the air be vented for
a minimum of 30mins to allow the air filtration and dryer to stabilise). Once the inlet pipework
has been purged, the Air inlet purge/vent valve (2) can be closed and the pressure gradually
introduced to the generator by slowly opening the Generator inlet isolation Valve (3). Switch
the generator ON using the power switch at the bottom of the left hand side of the generator.
The first screen that will be displayed is the ‘Peak’ logo followed by an initialisation screen:

Initially, the generator should show 0 pressure in
the tank, and nominal 20.7% ambient O2 content,
at this point the system will be shortcycling,
automatic bypass feature will be active, and the
generator will be internally venting “bad” gas:

Once the desired Oxygen content has been achieved (approx. 30min). the system will
automatically close the bypass valve, stop internally venting and begin to fill the outlet
buffer tank.
Page 30

Once the desired tank pressure has been achieved,
the system will automatically exit the “Shortcycle”
mode and begin “Normal Operation”.

The system will continue to produce Gas until the
Standby pressure is reached, at which point the
generator will enter the “Standby” mode.
Once in “Standby” mode, the generator will pause
the normal cycle and stop consuming air.

Slightly open Tank Purge/Vent valve (6) to allow any residual oxygen to be purged from
the tank, as pressure in the tank falls, the generator will automatically resume Normal
Operation again. If the pressure falls too low, Shortcycle mode will become active, if this
happens slightly close the Tank Purge/Vent valve (6) as you have exceeded the capacity
of the system. After approx 30min purging, the Tank Purge/Vent valve (6) can be closed,
the Tank/Application Isolation valve (7) can now be opened slowly and the downstream
system pressurised. If downstream volume is large and you open the valve too fast allowing
the pressure in the outlet tank to drop too far, then the sytem will automatically return to
Shortcycling mode. Allow the downstream system to fully fill and stabilise before starting
to consume gas.

Page 31

Normal Operation
i-Flow 7000 series gas generators are designed specifically to minimize operator
involvement. As long as the system is installed as described in earlier sections and is
serviced in accordance with the specified maintenance recommendations (see Service
Requirements), then it should simply be a matter of turning the Generator on. Note: the
generator will only produce nitrogen gas based on demand, so should typically be left
in a powered state with live compressed air supply. If the system is shutdown, or suffers
a power failure, it will restart automatically. However, if left without inlet air pressure
for a prolonged period and the Nitrogen tank is allowed to vent all pressure, then the
commissioning process above should be repeated to purge the oxygen from the system
before high quality nitrogen gas can be produced again. There are several “Modes” of
operation for this system, the current system Mode can be seen in the bottom green
bar on the left side of the Home Page.

Shortcycling – Bypass Active

Tank pressure is low and the gas purity is out of specification. Gas will
be internally vented until desired purity is achieved.

Shortcycling

Tank pressure is too low, the system will limit the max flow to the tank
to preserve gas quality, if the demand from the system is too high it
must be reduced to allow the tank pressure to recover and the system
to automatically exit Shortcycling.

Normal Operation

System is operating with in specification, columns are cycling and gas
is being produced.

Standby

Demand on the system is Low / stopped. The system will automatically detect this and pause the cycle to reduce air consumption.

Refreshing – Bypass Active

If the system is in Standby mode for a prolonged period, gas purity
may rise out of specification, Refresh mode will force the columns to
cycle andinternally vent “bad” gas to recover purity, so it is ready for
use when demand resumes.

Page 32

Safe Isolation Process
With reference to the diagram in the Recommended Piping Layout section.
To shut the system down, first close the Tank/Application isolation Valve (7) and
the Generator outlet isolation Valve (5), this will isolate and preserve the gas within
the Nitrogen receiver/storage/buffer tank. NOTE: This will “lock” pressure in the
outlet buffer tank, if the tank needs to be moved or inspected, it should first be depressurised by slowly opening the Tank purge/vent valve (6). Then close the Air inlet
isolation Valve (1) and slightly open the Air inlet purge/vent Valve (2) and the Generator
outlet purge/vent valve (4) to allow the generator pressure to vent to atmosphere.
Once the sound of dissipating pressure has stopped and the ‘Tank pressure indication
dial’ on the Home screen reads ‘Zero’ (0) fully open these vent valves (2 and 4), turn off
the power to the generator via the power switch and remove the mains cord from the
generator (located next to the power switch).
Note: Vent valves (2 and 4) should remain open for the full duration of the service
allowing the CMS (Carbon molecular sieve) to release oxygen and prevent the pressure
from building back up again.
Once service operations have been completed, the generator can be re-connected
to the mains supply and the start-up process described in earlier sections should be
repeated.

Page 33

Service Requirements
Due to the simplicity of the design and the small number of moving parts the i-Flow N2
Nitrogen Generators will have a long and trouble free life. However as with all technical
equipment it should be regularly inspected and serviced as below.

Service Schedule
Purchase Interval

Unit

Part No.

i-Flow Mini 701X – 702X (All purities)

3304731

i-Flow Mini 7033 – 7043 (All purities)

3304732

i-Flow Prime 7011 – 7021 (5%)

3304728

i-Flow Prime 7031 – 7041 (5%)

3305384

i-Flow Prime 7051 – 7101 (5%)

3305385

i-Flow Prime 7011 – 7031 (0.5%-4%)

3304728

i-Flow Prime 7041 (0.5%-4%)

3305384

i-Flow Prime 7051 – 7101 (0.5%-4%)

3305385

i-Flow Prime 7012 – 7042 (500ppm-1000ppm)

3304728

i-Flow Prime 7052 (500ppm-1000ppm)

3304729

i-Flow Prime 7062 – 7102 (500ppm-1000ppm)

3305385

i-Flow Prime 7013 – 7043 (5ppm-100ppm)

3304728

i-Flow Prime 7053 – 7063 (5ppm-100ppm)

3304729

i-Flow Prime 7073 – 7103 (5ppm-100ppm)

3305385

O2 Analyser %*

3304725

O2 Analyser PPM (500-1000ppm)

3304724

O2 Analyser PPM (5-100ppm)

3305021

12 months

48 months

*Analyzer service is dependent on selected model.

Page 34

Service Indication
The generator will notify the user of the service interval for the filter elements. The generator
has the following Service Indication Stages:-

Stage 1 
When less than 30 days are remaining on the service counter the Service Due icon will
show in the top right corner of the Home Screen.
This is to make the user aware that a service of the generator is due and should be
planned at the earliest convenience. The generator will continue to operate as normal
with the service indicator on.

Stage 2 
Once the Service counter has reached 0, the Service Overdue icon will be displayed in
the top right corner of the Home screen.
This is to make the user aware that the service of the generator is now overdue and
must be completed immediately to ensure the continuous trouble free operation of the
generator.

Service Indication Reset
Once the service has been completed the Service Indication can be reset through the
service interface. This will be performed by the Peak Service Engineer or trained service
representative that completes the service operation.

Page 35

Peak Protected
With 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, day
out, protecting your productivity.

[Peak Protected] can provide…

Installation

A dedicated Peak engineer will visit
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IQ/OQ

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requiring documented qualification

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preventative maintenance

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Around the clock support by phone
or online with our global technical
helpdesk

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

Page 36

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 a
reaction 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 your
Peak Gas Generation representative.
Cleaning should only be undertaken with the power switched off and
the 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 to
the generator.
Care should be taken with Leak Detections Liquids.

CAUTION

Page 37

Error Messages
In the event of a fault condition on the system the RED warning triangle will be
displayed in the top right corner of the Home Screen, pressing the Icon will take you
to the Error Page. Please note that upon start-up, the RED warning triangle is normal
(refer to P26 of the user manual)

If no faults are currently active the Error Page will be blank, possible Error Messages are:

Service Due

When less than 30 days remaining on service counter, this
error will be active. Yellow Spanner Icon on Home page. Please
schedule a visit with your trained and auothorised service
provider.

Service Overdue

System is overdue service. Please schedule a visit with your
trained and auothorised service provider as soon as possible to
ensure continuous trouble free operation.

Low Inlet Pressure

Air Supply to system is compromised, please investigate and
contact your local service provider.

Low Tank Pressure

Outlet buffer tank pressure is low, typically if no other errors are
present, then this is likely to be excess demand on the system,
or a gas leak on the tank / application, please investigate and
contact your local service provider.

O2 Alarm Comms Failure

The communication signal has been lost between the generator
and it’s O2 analyser and the reading on the screen is not correct,
please contact your local service provider.

Output flow too high
(requires optional flow sensor)

Excess demand on the system, or a gas leak on the tank /
application, please investigate and contact your local service
provider.

Dewpoint too high
(requires optional dewpoint sensor)

Excess demand on the system, or a gas leak on the tank /
application, please investigate and contact your local service
provider.

Page 38

Troubleshooting
Problem

The generator will not switch on and the
power switch does not illuminate.

The application is reporting low pressure.

Service indicator on the screen is active.

Overdue service indicator on the screen is
active.

Possible Solution
•

Ensure power cable is plugged into the
generator and that the socket is turned on

•

Check the fuse in the power cable plug (if
fitted)

•

Contact your service provider

•

Check pressure readings on the display are
showing normal pressure.

•

Ensure that the system is leak free and all
vent valves are closed.

•

Ensure isolation valves between the
generator, tank and application are fully
open.

•

Contact your service provider.

•

The generator is due for a service. Contact
your service provider.

•

Refer to Service Indication section of this
manual for further information

•

The generator is overdue for service.

•

Contact your service provider urgently.

•

Refer to Service Indication section of this
manual for further information

•

Ensure there is a complete, leak tight
connection between the generator and the
application

•

Ensure the flow demand on the tank is
within rated limits

•

Ensure the isolation valves on both inlet
and outlet sides of the generator are fully
open

•

Contact your service provider.

•

Ensure that the system is leak free and all
vent valves are closed.

•

Ensure the flow demand on the tank is
within rated limits

•

Ensure isolation valves between the
generator and the tank are fully open

•

Contact your service provider.

Generator displays an error message.

Tank pressure is low.

Page 39

Peak Gas Generation gas generators define the benchmark in reliability, convenience and performance in
facilities 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 maintenance
whilst 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 our
generator products please contact
contact@peakgas.com
Copyright © Peak Scientific Instruments Ltd 2023 — i-Flow 7000 Series User Manual Rev 5 RSID 4707 PN UM-0029 EN —09/11/2023