Peak NM20ZL Operation manual

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 1
Installation & User Guide
High Purity Gas Generator
For
API Range
NM20ZL Gas Station
(Wall Mounted System)
UK
Fountain Crescent
Inchinnan Business Park
Inchinnan
Renfrew PA4 9RE
Scotland
UK
Tel. [phone]
Fax. [phone]
[e-mail]
www.peakscientific.com
USA
19 Sterling Road
Suite #8
Billerica
MA 01862
USA
Tel. [phone]
[phone]
Fax. [phone]
[email protected]
INDIA
PH-5B, Shantinivas Apts
12-7-295, METTUGUDA
Hyderabad, 500 017
Andhrapradesh
INDIA
Tel. [phone]
Fax. [phone]
[email protected]

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 2
Document Change History
Rev. No. Changed Initials Date
1 Document Created SK 20/09/07
2 Included new design of cabinet and updated pneumatic
diagram SK 18/06/08

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 3
Warranties and Liabilities
1) The Company warrants that it has title to the Goods.
2) Subject to the provisions of this clause the Company warrants that the Goods shall comply in all material
respects with any specification referred to in the Order Confirmation (as the same may be amended) and
shall, subject thereto, be free from defects in material and workmanship for the lesser of a period of
twelve months from the date of delivery or thirteen months from the date of dispatch from the factory.
3) Save as provided in this clause and except where the Goods are sold to a person dealing as a consumer
(within the meaning of the Unfair Contract Terms Act 1977) all warranties, conditions or other terms
implied by statute or common law are hereby expressly excluded save to the extent they may not be
lawfully excluded. When the Goods are sold to a consumer within the meaning of the Unfair Contract
Terms Act 1977 their statutory rights are not affected by the provisions of this clause.
4) In the event of the Customer making a claim in respect of any defect in terms of clause 2 hereof the
Customer must: -
4.1) Reasonably satisfy the Company that the Goods have been properly installed, commissioned,
stored, serviced and used and without prejudice to the generality of the foregoing that any defect
is not the direct or indirect result of lack of repair and/or servicing, incorrect repair and/or
servicing, use of wrong materials and/or incorrect spare parts; and
4.2) Allow the company to inspect the Goods and/or any installation and any relevant packaging as
and when reasonably required by the Company.
5) Subject to the Company being notified of any defect as is referred to in sub-clause 2 hereof within a
reasonable time of it becoming apparent and subject always to the terms of sub-clause 4 hereof, the
Company shall, in its option, replace or repair the defective Goods or refund a proportionate part of the
Price. The Company shall have no further liability to the Customer (save as mentioned in sub-clause 6
hereof).
6) The Company shall be liable to indemnify the Customer in respect of any claim for death or personal
injury to any person in so far as such is attributable to the negligence or breach of duty of the Company or
any failure by the Company to comply with the provisions of sub-clause 2 hereof.
7) Save as provided in sub-clause 2 hereof the Company shall not be liable in respect of any claim by the
Customer for costs, damages, loss or expenses (whether direct, indirect, consequential or otherwise) or
indemnity in any respect howsoever arising including, but not by way of limitation, liability arising in
negligence (other than pursuant to clause 6 above) that may be suffered by the Customer or any third
party,
SAFETY NOTICE TO USERS
These instructions must be read thoroughly and understood before installation
and operation of your Peak Gas Generator.
When handling, operating or carrying out any maintenance, personnel must
employ safe engineering practices and observe all relevant local heath and
safety requirements and regulations. The attention of UK users is drawn to the
Health and Safety at Work Act 1974.
WARNING: Nitrogen is not a poisonous gas, but if the concentration in the
inhaled air becomes too high there will be a risk of asphyxiation.

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 4
Contents
Page No
Document History 2
Warranty Statement 3
Safety Notice To Users 3
Introduction 5
Unpacking & Installation 5
Location 5
Air Connection 6
Principle of Operation 7
Commissioning 8
Maintenance Schedule 9
Technical Specifications 11
Pneumatic Diagram
12
Maintenance Log 13
Notes 14

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 5
1 Introduction
The Peak Scientific Instruments Ltd NM20ZL Gas Station is designed specifically for use with API LC/MS
Instruments. The generator is fitted with manual switch which allows the generator to switch source and
exhaust as described in photo spray mode.
2 Unpacking and Installation
Although Peak Scientific takes every precaution with safe transit and packaging, it is advisable to fully
inspect the unit for any sign of transit damage.
ANY DAMAGE SHOULD BE REPORTED IMMEDIATELY TO THE CARRIER AND
PEAK SCIENTIFIC OR THE DISTRIBUTOR FROM WHERE THE UNIT WAS
PURCHASED.
Note: - Included with the generator is a pack containing manuals & fittings. Be careful
not to discard these with the packing.
Please save the product packaging for storage or future shipment of the
generator.
3 Location
The generator in designed to be installed adjacent to the Mass Spectrometer it is supplying. If this is not
convenient then the generator can be sited elsewhere however consideration should be made to the
lengths of pipe runs as pressure drops can result from extended runs of pipe.
The generator can fit under most workbenches although it has been designed to be wall mounted using
the slotted holes to the rear. These are on 100mm centres.
Performance of the generator (like all sophisticated equipment) is affected by ambient conditions.
Continuous operation in ambient temperatures exceeding 25°C will lead to a reduction in capacity and
prolonged operation in temperatures exceeding 30°C will shorten the life of the unit. Note should also be
taken of the proximity of Air Conditioning outlets. These can sometimes give rise to “pockets” of air with
high relative humidity. Operation of the generator within such a pocket could adversely affect its
performance. Consideration should also be given to the air flow around the unit. It is recommended that
an air gap of 75mm (3”) should be maintained down both sides and across the top of the unit.
MAXIMUM AMBIENT CONDITIONS: - 30°
°°
°C (dry bulb) 70%RH (Max)
Electrical Connection
The NM20ZL does not require any electrical supply.

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 6
4 Air Connection
The Nitrogen Generator should be connected to a clean, dry, OIL - FREE source of compressed air. A
regulated minimum pressure of 120 psig is required. Any doubts as to the suitability of your compressed
air supply should be referred to the factory for advice.
The generator has a Breathing Air Filter with ¼” BSPT connection to the left side of the unit. The
Compressed Air supply should be connected here. This filter will drain moisture and is equipped with an
automatic drain. The drain should be led to a convenient place. There are 3-off ¼” BSPT Female
bulkhead connections to the right of the unit. Fittings are provided to connect these ports to the gas
connections of the Mass Spectrometer.
A kit of fittings for connecting to the Mass Spectrometer is provided with this User Guide.
LC/MS with 3-off Connections (e.g. Api2000)
Connect the 3-off gas ports at the right side of the generator to their respective ports on the Mass
Spectrometer using the 3-off ¼” BSPT x ¼” Swagelok fittings provided. Use ¼” tubing throughout.
LC/MS with 4-off Connections (e.g. Api3000)
Connect Curtain Gas and Exhaust to their respective ports using ¼” tubing as per above. The Source
Gas will have to be split into Gases 1 & 2 at the Mass Spectrometer. Connect Gases1 & 2 with 1/8”
tubing to the ¼” Tee Piece supplied with the 2-off ¼” BSPT x 1/8” Swagelok fittings. Connect the inlet
branch of the tee to the Source Gas connection at the rear of the generator using ¼” tubing as above.
NB: - to minimize pressure losses position the Tee as close to the Mass Spectrometer as possible.

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 7
5Principle of Operation
Peak Scientific Instruments NM20ZL Generators utilize two of air preparation membranes to produce the
required Gas outputs. The Nitrogen side of the generator employs “Hollow Fibre Membrane” Technology
to efficiently separate Nitrogen from other gases present in ambient air. An overview of this process can
be seen below.




Air passes into the system through the Inlet BA Filter which removes bulk moisture and harmful
particles. The air is now divided into 2 streams. The first stream is passed through the Nitrogen
Membrane to generate a flow of Nitrogen for the Curtain Gas output. The Nitrogen is then filtered
through the RAC Filter to remove any remaining contaminants. The second stream is passed through
hand operated selector valve this allows air through 2nd Nitrogen Membrane to generate a high flow of
Nitrogen for the Source Gas and Exhaust Gas requirements or through the dry point for High flow of
dry air for Source and Exhaust requirements this is selected by the end user via the selector switch at
the front of the generator. The Nitrogen / Air is then filtered through the RAC Filter to remove any
remaining contaminants.

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 8
6 Commissioning
With the Generator installed as described earlier connect compressed air to the unit and turn it ON.
Select Source N2 or Source Air mode via selector switch. Disconnect the Outlet connections to allow the
generator to vent to atmosphere until the unit is stabilised. The Generator has been pre-set in the factory
to give the specified output flow-rate and pressure in line with known requirements. Once the Membranes
reach the design pressures the Generator will stabilise and produce Nitrogen. Maximum purity will be
achieved. The generator can then be re-connected to the application.
The design of the generator is such that it can deliver up to 26 Litres / min Nitrogen/ Air at 110 psig with
an additional 12 Litres / min of Nitrogen at 80 psig. Should the demand for gases be less than the rated
output flow, or indeed should the demand stop the generator will continue to operate without any
problems.
Pressure & Flow Settings
Output pressures and flow rates are controlled by pressure regulators located behind the front panel as
shown below. The Factory settings for the 3 outputs are as follows: -
Port Usage / Connection Pressure / Flow
CURTAIN Curtain Gas 12 ltr /min - 80 psig
SOURCE Source Air / Source N2 26 ltr/min - 110 psig
EXHAUST Exhaust Gas 8 ltr/min - 60 psig
The above settings should allow the NM20ZL to be operated with all standard configurations for the
Applied Biosystems Api range of LC/MS/MS instruments. Should the above settings not provide sufficient
flow or pressure for your application please contact the factory for assistance.
Pressure Regulators
Flow Controllers

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 9
7 Maintenance Schedule
WARNING: Servicing and/or repair of the Generator should only be undertaken
by a TECHNICALLY COMPETENT PERSON with the Generator in a safely isolated
condition.
Due to the simplicity of the design and the small number of moving parts the NM Series Nitrogen
Generator will have a long and trouble free life. However as with all scientific and technical equipment it
should be regularly inspected and serviced as below:
BA Inlet Filters Every 12 - months
RAC Filter Elements Every 12 - months
1. BA inlet Filter Elements
These should be changed at 12 months intervals. In addition filter bowls should be cleaned and, the
operation of the auto-drains should be checked.
The Air supply to Generator MUST be turned OFF and the Generator MUST be de-
pressurised prior to attempting to remove ANY filter bowl. Failure to do this may cause
injury.
The filter housing is removed by un-screwing in a counter clockwise direction.
Active Carbon
Element
(00-4427)
Coalescing
Element
(00-4426)
)
Autodrain
(02-4485

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 10
2. RAC Filter
The Element is as shown, and should be changed at 12-month intervals.
The Air supply to Generator MUST be turned OFF and the Generator MUST be de-
pressurised prior to attempting to remove ANY filter bowl. Failure to do this may cause
injury.
The filter housing is removed by un-screwing in a counter clockwise direction.
Active Carbon
Element
(00-4425)

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 11
8 Technical Specifications
General Details
Minimum Operating Ambient Temperature 5 oC (41 oF)
Maximum Operating Ambient Conditions 30 oC (86 oF) 70% RH(max)
Inlet Conditions (Free of oil and bulk moisture)
Minimum Air Inlet Pressure 120 psig (8.27 Barg)
Maximum Air Inlet Pressure 145 psig (10.0 Barg)
Minimum Air Inlet Flow Rate 90 l/min (ATP)
Outlet Gas
Maximum Pressure Drop (Outlet-Inlet) δP 8 psig
Maximum Gas Outlet Pressure 110 psig
Maximum Source Gas Outlet Flow (Nitrogen / Air) 26 Litres/min (ATP)
Maximum Exhaust Gas Outlet Flow (Nitrogen / Air) 8 Litres/min (ATP)
Maximum Curtain Gas Outlet Flow (High Purity Nitrogen) 12 Litres/min (ATP)
Start up time for Purity 60 minutes
Particles 0.01um
Serviceable Parts List
Breathing Air Inlet Filter Elements 00-4426
00-4427
Active Carbon Filter Element 00-4425
Auto drain 02-4485
General
Dimensions W x D x H cm
(inches) 27 x 20 x 76
(10 x 8 x 30)
Shipping Weight Kg
(lbs) 25 (55)

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 12
9 Pneumatic Diagram

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 13
Maintenance Log
Model- NM20ZL. Serial number
Work Done Remarks Date Name

PEAK Scientific Instruments Ltd High Purity Nitrogen Generator
Instructions for use Manual 20th September 2007
NM20ZL User Guide Issue 2 14
Notes: