NM20ZL Gas Station (Wall Mounted System) - User Manual  

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PEAK Scientific Instruments Ltd
Instructions for use Manual

High Purity Nitrogen Generator 20th September 2007

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. +44 (0) 141 812 8100 Fax. +44 (0) 141 812 8200 info@peakscientific.com www.peakscientific.com

USA 19 Sterling Road Suite #8 Billerica MA 01862 USA Tel. +1-866-647-1649 +1-866-732-5427 Fax. +1-866-647-1649 usasupport@peakscientific.com

INDIA PH-5B, Shantinivas Apts 12-7-295, METTUGUDA Hyderabad, 500 017 Andhrapradesh INDIA Tel. +91 40 2782 0047 Fax. +91 40 2783 2441 info@peakscientific.com

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Document Change History
Rev. No.
1 2

Changed
Document Created Included new design of cabinet and updated pneumatic diagram

Initials
SK SK

Date
20/09/07 18/06/08

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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: -

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.

4.1) Reasonably satisfy the Company that the Goods have been properly installed, commissioned,

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.
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Contents
Page No Document History Warranty Statement Safety Notice To Users Introduction Unpacking & Installation Location Air Connection Principle of Operation Commissioning Maintenance Schedule Technical Specifications Pneumatic Diagram Maintenance Log Notes 2 3 3 5 5 5 6 7 8 9 11 12 13 14

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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.

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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.

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Principle 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.
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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: -

Flow Controllers

Pressure Regulators

Port CURTAIN SOURCE EXHAUST

Usage / Connection Curtain Gas Source Air / Source N2 Exhaust Gas

Pressure / Flow 12 ltr /min - 80 psig 26 ltr/min - 110 psig 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.

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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 RAC Filter Elements 1. BA inlet Filter Elements

Every 12 - months Every 12 - months

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 depressurised prior to attempting to remove ANY filter bowl. Failure to do this may cause injury.

Active Carbon Element (00-4427)

Autodrain (02-4485

Coalescing Element (00-4426) )

The filter housing is removed by un-screwing in a counter clockwise direction.
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2. RAC Filter

High Purity Nitrogen Generator 20th September 2007

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 depressurised prior to attempting to remove ANY filter bowl. Failure to do this may cause injury.

Active Carbon Element (00-4425)

The filter housing is removed by un-screwing in a counter clockwise direction.

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Technical Specifications
General Details
5 oC (41 oF) 30 oC (86 oF) 70% RH(max)

Minimum Operating Ambient Temperature Maximum Operating Ambient Conditions Inlet Conditions (Free of oil and bulk moisture) Minimum Air Inlet Pressure Maximum Air Inlet Pressure Minimum Air Inlet Flow Rate Outlet Gas Maximum Pressure Drop (Outlet-Inlet) δP Maximum Gas Outlet Pressure Maximum Source Gas Outlet Flow (Nitrogen / Air) Maximum Exhaust Gas Outlet Flow (Nitrogen / Air) Maximum Curtain Gas Outlet Flow (High Purity Nitrogen) Start up time for Purity Particles

120 psig (8.27 Barg) 145 psig (10.0 Barg) 90 l/min (ATP)

8 psig 110 psig 26 Litres/min (ATP) 8 Litres/min (ATP) 12 Litres/min (ATP) 60 minutes 0.01um

Serviceable Parts List Breathing Air Inlet Filter Elements 00-4426 00-4427 Active Carbon Filter Element Auto drain 00-4425 02-4485

General Dimensions W x D x H cm (inches) Kg (lbs) 27 x 20 x 76 (10 x 8 x 30) 25 (55)

Shipping Weight

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Pneumatic Diagram

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Maintenance Log
Model- NM20ZL. Serial number

Work Done

Remarks

Date

Name

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Notes:

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