NiGen Membrane LCMS Nitrogen Generators NiGen - Cole

NiGen Membrane LCMS Nitrogen Generators NiGen - Cole
PD-0100-0069
Revision A
Nitrogen N341M
LCMS LABORATORY NITROGEN
GENERATOR
Installation, Operation & Maintenance
Manual
N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
N341M LCMS Nitrogen Generator (with Compressor)
Installation, Operation & Maintenance Manual
Covering the following laboratory hydrogen generator models:
Model
Proton Part Number
N341M
54-0112-0013
Proton OnSite
10 Technology Drive
Wallingford, CT 06492
203-949-8697
203-678-2000
[email protected]
www.protononsite.com
© 2013 Proton Energy Systems, Inc. d/b/a Proton OnSite
All rights not expressly granted herein are reserved.
Information in this document is provided in connection with Proton Energy Systems Inc. d/b/a Proton OnSite
(“Proton”) products and services. No license, express or implied, by estoppel or otherwise, to any
intellectual property rights is granted by this document. Except as provided in Proton Terms and Conditions
of Sale for such products and services, Proton assumes no liability whatsoever, and Proton disclaims any
express or implied warranty, whether written or oral, relating to sale and/or use of Proton products or
services including liability or warranties relating to fitness for a particular purpose, merchantability, or
infringement of any patent, copyright or other intellectual property right. Proton products are not intended for
use in medical, life saving, or life sustaining applications.
Proton may make changes to specifications and product descriptions at any time, without notice.
This document as well as any software, processes or procedures described in it is furnished under license
and may only be used or copied in accordance with the terms of the license. The information in this
document is furnished for informational use only, is subject to change without notice, and should not be
construed as a commitment by Proton. Proton assumes no responsibility or liability for any errors or
inaccuracies that may appear in this document or any software that may be provided in association with this
document.
Except as permitted by such license, no part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means without the express written consent of Proton.
® Proton, Proton OnSite, Proton Energy Systems, the Proton design, StableFlow, StableFlow Hydrogen
Control System and design, HOGEN, and FuelGen are trademarks of Proton Energy Systems, Inc.
Any other brands and/or names used herein are the property of their respective owners.
PD-0100-0069 Rev. A
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
Purchaser – please record your generator serial and configuration numbers in
this space:
Serial Number ____________________________________________
Configuration Number______________________________________
Disclaimer
Proton OnSite has written this manual to be an easy to use guide for the N341M LCMS Nitrogen Gas
Generators. All statements, technical information, and recommendations in this manual and in any guides or
related documents are believed reliable, but the accuracy and completeness thereof are not guaranteed or
warranted. They are not intended to be, nor should they be understood to be, representations or warranties
concerning the products described.
This nitrogen gas generator has been sold subject to the limited warranties set forth in the warranty statement.
Further, Proton reserves the right to make changes in the specifications of the products described in this
manual at any time without notice and without obligation to notify any person of such changes.
This laboratory nitrogen generator is designed for operation only by trained personnel familiar with the use of
similar equipment and with safety requirements for the use of nitrogen and other industrial gases. Before
operating this laboratory nitrogen generator, make sure to read and understand this information provided
herein. If you have questions, please contact Proton OnSite Systems or your generator supplier.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
LIMITED WARRANTY
NITROGEN GAS GENERATOR SYSTEMS
LIMITED WARRANTY: PROTON ENERGY SYSTEMS INC. (“PROTON”) warrants that the ITEMS LISTED BELOW shall
be free from defects in material and workmanship for the stated period of time commencing from date of shipment or as stated below.
N341M LCMS Nitrogen gas generator system:
Repair or replacement parts for Nitrogen Gas Generator System:
One (1) year from shipment
Ninety (90) days from shipment
EXCLUDED FROM THIS LIMITED WARRANTY: The following shall be excluded from the Limited Warranty:

Parts and items considered consumable in normal operations, including those parts and items supplied with the
Nitrogen Gas Generator System (“System”) for maintenance.

Any System and its parts that are not installed, operated, and maintained in accordance with the unit’s manual
supplied with the System.

Damages due to accident, abuse, acts of God, acts of terrorism, misuse or negligence, or which result, in whole or in
part, from improper or unauthorized use or repair of the System, or use of the System in a manner for which it was
not designed, or by causes external to the System such as, but not limited to, power or air conditioning failure or
voltage irregularities.
REMEDY: BUYER’S sole and exclusive remedy in the event of defect, and the liability of PROTON hereunder is limited
to the adjustment, repair, or replacement of the defective item or part with a similar item or part free of defect.
Such adjustments, repairs, or replacements will be made at PROTON’S Wallingford, Connecticut, plant or, for Systems only, at the
site of the System, if BUYER so elects. All costs for shipping equipment or parts shall be on the account of the BUYER whether to or
from the point of manufacture. Labor costs associated with travel, expenses, and subsistence costs for field services shall be on the
account of the BUYER.
VOIDING OF THE LIMITED WARRANTY: This Limited Warranty is immediately void upon:

THE OPENING OR DISASSEMBLY OF THE SYSTEM CABINET (OR ANY PART THEREIN), OR

THE SALE, ASSIGNMENT OR ANY OTHER TRANSFER OF TITLE BY BUYER OF THE ITEMS OR
PARTS OTHERWISE COVERED UNDER THIS LIMITED WARRANTY
WAIVER OF ALL OTHER WARRANTIES: THE LIMITED WARRANTY PROVIDED HEREUNDER AND
THE RIGHTS AND REMEDIES OF THE BUYER HEREUNDER ARE IN LIEU OF, AND BUYER EXPRESSLY
WAIVES, ALL OTHER WARRANTIES, GUARANTEES, OBLIGATIONS, LIABILITIES, OR REMEDIES,
EXPRESSED OR IMPLIED, ARISING BY LAW OR OTHERWISE, INCLUDING WITHOUT LIMITATION
IMPLIED WARRANTIES OF MERCHANTABILITY AND NON-INFRINGEMENT, IMPLIED WARRANTIES
ARISING FORM THE COURSE OF DEALING OR USAGE OF TRADE AND IMPLIED WARRANTIES OF
SUITABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
LIMITATION OF LIABILITY: THE REMEDIES PROVIDED IN THIS LIMITED WARRANTY ARE EXCLUSIVE
AND PROTON SHALL IN NO WAY BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY
KIND WHATSOEVER INCLUDING WITHOUT LIMITATION LOSS OF USE, REVENUE OR PROFIT.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
Nitrogen N341M LCMS Laboratory Nitrogen Generator
(with Compressor)
INSTALLATION , OPERATION & MAINTENANCE MANUAL
Prepared by
PROTON ONSITE®
CONTENTS
1
2
Introduction ................................................................................................................ 8
1.1
General Information .................................................................................................... 9
1.2
Product Specification ................................................................................................. 10
Safety ........................................................................................................................ 12
2.1
Using Nitrogen Gas .................................................................................................... 12
2.2
Oxygen Enrichment ................................................................................................... 12
2.3
Safety Devices ............................................................................................................. 14
2.4
Technical Service Contact Information ................................................................... 14
3
Placement ................................................................................................................. 15
4
Installation ............................................................................................................... 16
4.1
Electrical Connections ............................................................................................... 16
4.2
Pneumatic Connections ............................................................................................. 16
4.2.1
4.2.2
4.2.3
4.3
5
Packaging Disposal .................................................................................................... 16
Operation .................................................................................................................. 17
5.1
Operational Interface ................................................................................................ 17
5.2
Startup ........................................................................................................................ 20
5.3
Adjusting Nitrogen Pressure ..................................................................................... 20
5.4
Normal Operation ...................................................................................................... 22
5.4.1
6
Nitrogen Outlet ......................................................................................................................16
Air Outlet ...............................................................................................................................16
Condensate Drain ..................................................................................................................16
Alarms ...................................................................................................................................23
Maintenance ............................................................................................................. 24
6.1
6.1.1
6.2
Filter Maintenance ..................................................................................................... 25
Filter Replacement .................................................................................................................26
Compressor Maintenance.......................................................................................... 31
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
7
Troubleshooting ....................................................................................................... 32
8
APPENDIX A - FORMS ......................................................................................... 33
8.1
Filter Element Change Log ....................................................................................... 33
8.2
Customer Registration Form .................................................................................... 34
TABLE OF FIGURES
FIGURE 1 DIMENSIONS ....................................................................................................................................11
FIGURE 2 GENERAL ARRANGEMENT .................................................................................................................15
FIGURE 3 NITROGEN GENERATOR OPERATOR INTERFACE ................................................................................17
FIGURE 4 REGULATOR LOCATIONS ..................................................................................................................21
FIGURE 5 ALARM AND MAINTENANCE MESSAGE LOCATIONS .............................................................................23
FIGURE 6 COVER BONDING CONNECTION .........................................................................................................24
FIGURE 7 FILTER ELEMENT LOCATIONS ...........................................................................................................25
FIGURE 8 CONDENSATE DRAIN LINE REMOVAL ................................................................................................26
FIGURE 9 FILTER HOUSING BOWL REMOVAL ...................................................................................................27
FIGURE 10 COALESCING FILTER ELEMENT ......................................................................................................27
FIGURE 11 CARBON FILTER ELEMENT .............................................................................................................27
FIGURE 12 NEW ELEMENT INSTALLATION ........................................................................................................28
FIGURE 13 COMPRESSOR INTAKE FILTER HOUSING REMOVAL ..........................................................................29
FIGURE 14 COMPRESSOR INLET PAPER FILTER ................................................................................................29
FIGURE 15 FILTER HOURS DISPLAY .................................................................................................................30
FIGURE 16 FILTER RESET DISPLAY ..................................................................................................................30
LIST OF TABLES
TABLE 1 N341M MEMBRANE NITROGEN GENERATOR TECHNICAL SPECIFICATIONS...........................................10
TABLE 2 GENERATOR GAS INLET/OUTLET FITTINGS .........................................................................................11
TABLE 3 OXYGEN CONCENTRATION CALCULATION ...........................................................................................13
TABLE 4 OPERATOR INTERFACE DISPLAY DEFINITIONS .....................................................................................19
TABLE 5 NITROGEN GENERATOR ALARMS .........................................................................................................23
TABLE 6 MAINTENANCE SCHEDULE ..................................................................................................................24
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
This Installation, Operation & Maintenance Manual of the Nitrogen Generator uses the
following safety symbols and conventions to alert you to information intending to help
you operate your laboratory nitrogen generators correctly and safely.
Manual Conventions
- Indicates a potentially hazardous situation, which, if not avoided, could result in death
or serious injury. The reader is in a situation which could cause bodily injury. Do not
proceed beyond a Warning symbol until the indicated conditions are fully understood and
met.
- Indicates a potentially hazardous situation, which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices. This could result
in equipment damage or loss of data. Do not proceed beyond a Caution symbol until the
indicated conditions are fully understood and met.
- Notes contain helpful suggestions or references.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
1 Introduction
Congratulations on your purchase of a N341M Nitrogen generator, the most capable
laboratory nitrogen generator available today. The Our nitrogen generators provide high
purity-grade nitrogen on demand and provide the following benefits:

Up to 34 SLPM

Up to 100 psig delivery pressure

Stable gas costs

Reduced likelihood of contamination from cylinder change out

Elimination of cylinder upkeep

Narrow footprint for enhanced laboratory space utilization

Provide Dry Air (with the purchase of Proton’s AB Interface Kit) for blending
purposes
Proton OnSite has provided these instructions to guide in the installation, operation, and
maintenance of the nitrogen generator. These instructions provide technical product
information, installation requirements, and detailed mechanical interface specifications.
Important safety information is also included in this manual. Please take time to
familiarize yourself with the system and the manual.
This manual attempts to answer most of the frequently asked questions with regards to
the operation of the unit. However, should you have any questions, the Proton OnSite
technical staff stands ready to answer them and support the successful deployment of this
equipment. Please call (203) 949-8697 and ask for field service technical support or
email [email protected] Please have the part number and
configuration number of your unit available.
IT IS THE CUSTOMER’S RESPONSIBILITY TO CONSULT WITH THE
LOCAL AUTHORITY HAVING JURISDICTION (AHJ) REGARDING LOCAL
CODE REQUIREMENTS FOR INSTALLATION AND OPERATION OF THIS
EQUIPMENT.
DO NOT USE THE NITROGEN GENERATOR IN A MANNER NOT SPECIFIED
BY PROTON ONSITE.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
PROTON ONSITE can offer a full range of installation services if you are not
comfortable with installation of the nitrogen generator.
1.1 General Information
The N341M LCMS laboratory nitrogen generator, when connected to a power source,
produces a continuous stream of pressurized nitrogen gas and automatically maintains a
user-set downstream pressure.
This manual covers the installation, operation, and maintenance of the Nitrogen
Generator.
The manual assumes the user is familiar with pneumatic circuit components, and is aware
of appropriate safety precautions and use of compressed air and nitrogen gases.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
1.2 Product Specification
Requirement
Model N341M
Product Flow rate
34 SLPM (72 SCFH)
Delivery Pressure, bar (psi)
0 – 6.9 bar (0-100 psi)
Input Power
230 VAC + 10%, 50/60 HZ, Single phase, 1800 VA
Enclosure Characteristics
External Dimensions
(HxDxW)
82.2 cm x 67.3cm x 50.8cm (32.4” H x 26.5” D x 20” W)
Weight
<86.4 kg( 190 lbs)
Environmental Considerations
Location - Min/Max Ambient
Operating Temperature
5-35 °C (40– 100 °F)
Location - Desired Ambient
Operating Temperature1
20-25 °C (68– 77 °F)
Location - Max Ambient Humidity
< 70% (non- condensing)
Location - Variation from Level
+/- 3º maximum
Location – Room ventilation
Requirements
See Table 3 Oxygen Concentration Calculation to determine room ventilation
requirements (pg 13)
Control
Adjustable Pressure set point with manual regulator
Display
Touchscreen multifunction display, pressure gauge
Environment
Indoor, Non- hazardous, Non- classified, Non-explosive
Safety
Enclosure Protection
IP20
Noise
< 54 dB (A) @ 1m
Mechanical Ports
3/8” Female NPT, with interface kit
Expected yearly operator usage
6000 hr
1.
Operation time outside desired directly linked to compressor life expectancy.
Table 1 N341M Membrane Nitrogen Generator Technical Specifications
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
26-9/16
24
20
30
32-3/8
Figure 1 Dimensions
Substance
Flow
Fitting
Direction
Nitrogen
Out
3/8” Female NPT
Air
Out
3/8” Female NPT
Drain
Out
¼” OD Push Connect
Mating Information
Fractional and/or
metric tube adapters
provided
Fractional and/or
metric tube adapters
provided
Tubing Provided
Fitting
Location
Rear
See Figure 2
Rear
See Figure 2
Rear
See Figure 2
Table 2 Generator Gas Inlet/Outlet Fittings
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
2 Safety
The safety guidelines below may not cover all situations. If there are concerns or
questions, please contact Proton OnSite technical Service or check with local authorities.
THIS NITROGEN GENERATOR IS A LABORATORY INSTRUMENT
DESIGNED FOR OPERATION BY TRAINED PERSONNEL. UNSAFE
CONDITIONS MAY RESULT IF THE GENERATOR IS OPERATED BY
UNTRAINED PERSONNEL OR PERSONNEL UNFAMILIAR WITH
NITROGEN AND ENRICHED OXYGEN SAFETY.
ALL PERSONNEL HANDLING, USING OR MAINTAINING THIS
GENERATOR MUST EMPLOY SAFE WORKING PRACTICES AND OBSERVE
ALL RELEVANT LOCAL HEALTH AND SAFETY REGULATIONS.
2.1 Using Nitrogen Gas
Nitrogen is an odorless, colorless nontoxic gas which can displace the air content of the
workspace and increase the risk of asphyxiation if not used properly.
Never directly inhale the gas produced and check gas connections with a liquid leak
detector at initial installation or after a service event where gas plumbing has to be
disconnected.
2.2 Oxygen Enrichment
As a byproduct of the nitrogen production, the generator has the ability to increase the
oxygen content levels greater than 23% thus creating an “oxygen enriched” atmosphere if
minimum ventilation requirements are not present within the space the generator is
installed.
In order to determine if the ventilation is sufficient, please perform the calculations in
Table 3. The units used shall be in cubic feet. Be sure to use the same measurement
system for all calculations during this process.
The calculation makes a conservative estimate by assuming the following: air input to
nitrogen out is 2:1. The calculation also assumes the membrane is 100% efficient in
removing oxygen from the nitrogen product, therefore releasing the maximum O2 content
to the environment the unit is installed.
If the air exchange rate of the installation location is unknown, please contact your
laboratory or facilities manger to determine the correct air exchange rate to use for the
calculation.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
If calculated oxygen enrichment exceeds 23%, Proton OnSite recommends increasing the
area ventilation rate or relocating the generator to a more suitable area.
Calculate room volume
V: ___________ room volume in cubic feet
Enter air ventilation rate
R: ___________ room air exchanges per hour
Multiply V x R
A: ___________
Multiply A x 21%
B: ___________
Insert values A and B into the below equation to determine potential oxygen enrichment.
If oxygen concentration exceeds 23%, Proton recommends you improve area ventilation
or relocate equipment to a more suitable area.
EXAMPLE: A room 10 feet by 12 feet with an 8 foot ceiling has a volume V of 960
cubic feet. If the room ventilation rate R is 4 exchanges per hour, then value A is 3840
and value B is 806. The potential O2 concentration will be 21.3%, which is less than the
23% enriched oxygen threshold value. No changes are needed.
Table 3 Oxygen Concentration Calculation
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
2.3 Safety Devices
MAXIMUM PRESSURE: A safety valve on each compressor and one on the internal
air receiving tank prevent the generator pressure from exceeding 12.0 bar (175 psi). The
air will be vented within the enclosure.
2.4 Technical Service Contact Information
Proton OnSite Technical Service can be contacted as follows:
Proton OnSite
10 Technology Drive
Wallingford, CT 06492
203-949-8697
203-678-2000
[email protected]
www.protononsite.com
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
3 Placement
The Nitrogen Generator is designed for indoor use only. 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.
Performance of the Nitrogen Generator is affected by ambient conditions.
Prolonged operation outside ambient temperature ranges will shorten the life of the
compressors.
Consideration should also be given to the air flow around the unit. An air gap of 6” is
recommended down both sides, at the rear and across the top of the unit. Please refer to
Figure 2 below for the general arrangement of the unit.
AC Power
Cord
Connection
Nitrogen
Outlet
Air Outlet
Condensate
Drain
Figure 2 General Arrangement
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
4 Installation
4.1 Electrical Connections
Connect the Nitrogen Generator to the 230 ± 10% VAC power with the provided power
cord at the rear of the unit (See Figure 2). Ensure the power cord is not in any
passageway and is protected from damage.
4.2 Pneumatic Connections
The Pneumatic Connections for the Nitrogen Generator should be plumbed with piping or
tubing suitably rated for the working pressure and flow rates of the gases being used.
4.2.1 Nitrogen Outlet
The Nitrogen Outlet is on the rear of the nitrogen generator (See Figure 2). The unit is
equipped with a 3/8” female NPT fitting. Fittings can be provided to adapt this to either a
fractional or a metric tube, depending upon your location.
4.2.2 Air Outlet
The air outlet is on rear of the nitrogen generator (See Figure 2). The unit is equipped
with a 3/8” female NPT fitting. Fittings can be provided to adapt this to either a
fractional or metric tube, depending upon your location.
4.2.3 Condensate Drain
The condensate drain is on the rear of the nitrogen generator (See Figure 2). The
connection is a 1/4” OD push to connect type fitting.
The condensation is expelled by bursts of compressed air. Ensure hose is properly
secured.
4.3 Packaging Disposal
It is recommended to keep the packaging, should the generator need to be returned to the
factory for any reason. If the packaging has to be discarded and the generator needs to be
returned to the factory, a charge will be assessed for the shipment of new packaging
materials. All returns must be made in the original packaging or a Proton OnSite
approved substitute.
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N341M LCMS Laboratory Nitrogen Generator
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5 Operation
5.1 Operational Interface
80
Proton OnSite
Nitrogen Generator
System Running
REV
0
16
1.0
Goto Config
Next
0
0
Figure 3 Nitrogen Generator Operator Interface
The Nitrogen Generator is equipped with a pressure gauge which shows nitrogen
pressure, and a touch screen interface, which shows system status, operational hours and
Alarms and Warnings. The interface has seven screens which can be viewed sequentially
by pressing the “Next” button displayed on every screen. Returning to a previous screen
is accomplished by using the “Prev” button.
The screens are defined below (Table 4)
Operator Interface Display
Top Level System Information Screen
Proton OnSite
Nitrogen Generator
System Running
REV
1.0
Goto Config
Next
Displays basic system status and software
revision of the Nitrogen Generator.
System Status Screen
System
Running
Comp A
Running
Comp B
Running
Total Hours
Prev
3
Next
PD-0100-0069 Rev. A
Displays the status of the system as well as
the status of both compressors. It also
displays the non-resettable total hours run
timer.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
Operator Interface Display
System Pressure Status Screen
Pressure Screen-PSI
AIR
NITROGEN
Prev
100
100
Next
Displays pressures of both the Air output as
well as the Nitrogen Pressure
NOTE: These are the system side pressures
for air and nitrogen and are not the
delivered pressure, see mechanical gauge.
Compressor A Runtime Hours
Compressor A Hours
Reset
PSWD
3
Prev
Next
Displays the total hours of operation of the
A Compressor. This timer can be reset after
compressor maintenance to accurately
indicate compressor run hours
Compressor B Runtime Hours
Compressor B Hours
Reset
PSWD
3
Prev
Next
Displays the total hours of operation of the
B Compressor. This timer can be reset after
compressor maintenance to accurately
indicate compressor run hours
Generator Filter Operational Hours
Filter Hours
3
Reset
PSWD
Prev
Next
PD-0100-0069 Rev. A
Displays the total hours of operation of the
filters within the system. This timer can be
reset after filter maintenance to accurately
indicate compressor run hours
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
Operator Interface Display
Alarm and Maintenance Messages
Alarm and Maint Messages
Alarm Reset
Prev
Displays any alarms or maintenance
messages. The message will scroll across
the display area associated. Pressing the
Alarm Reset will reset any cleared alarms,
leaving only active alarms (if any) to
display. See Table 5 and Figure 5 for
message locations (page 23)
Alarm Message Pop Up Screen
Alarm Message
Ack
Clear
Close
If at any time during operation an Alarm
condition occurs, this window will display.
The actual occurring alarm will scroll
across the top of the screen. Pressing any
button will clear the pop up but will not
RESET the alarm
Table 4 Operator Interface Display Definitions
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
5.2 Startup
Before the Nitrogen Generator is connected to the process for the first time, the Nitrogen
Generator should be operated and not connected to any application for ten minutes. This
is to ensure any impurities present are purged from the system. Failure to do this may
harm the process.
Once the Nitrogen Generator switched on, pressure will automatically start to build in the
internal storage tank. This will climb to the factory set pressure.
Once this pressure is reached, the compressor will continue to run until the internal tank
upper pressure limit is reached and the compressor has run for a period of at least two and
a half minutes.
The compressor will then stop, but not unload, until the internal tank lower pressure
limits is reached. Once this limit is reached the compressor will switch back on again.
This compressor cycling is normal and will continue throughout the operation of the
Nitrogen Generator.
When the system has been operated for a period of 10 minutes, all the internal piping and
storage tank will have been purged with Nitrogen.
The Nitrogen Generator is now purged and external piping can be connected at the rear of
the unit.
5.3 Adjusting Nitrogen Pressure
During operation the Nitrogen Generator delivers Nitrogen gas at a preset pressure. This
set pressure can be read on the front pressure gauge. The product pressure can be
adjusted to any desired pressure up to 6.9 bar (100 psig) by adjusting the product pressure
regulator within the generator (Figure 4)
If the nitrogen demand exceeds the rating of the Nitrogen Generator, then the pressure
across the membrane will begin to droop and will negatively affect the purity of the
nitrogen delivered.
To adjust the product pressure, remove the Nitrogen Generator left side cover by turning
the capture screw 90 degrees counter-clockwise and swinging the cover downward. To
fully remove the cover, unplug the green bonding wire at the bottom of the cover.
Within the nitrogen generator, there are two pressure regulators. The first, the product
pressure regulator, is mounted to the compressor compartment and is easily accessible.
The second is mounted on top of the generator membranes in the top center of the
generator. The only regulator adjusted is the regulator indicated in the following Figure 4.
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N341M LCMS Laboratory Nitrogen Generator
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Membrane Regulator
(DO NOT ADJUST)
Product Pressure Regulator
PR425
(User Adjustable)
Figure 4 Regulator Locations
1. To raise product pressure, rotate the knob slowly clockwise until the nitrogen
pressure displayed on front panel pressure gauge reads the desired pressure.
2. To lower product pressure, rotate the Product Pressure Regulator knob slowly
counter-clockwise until the nitrogen pressure displayed on the front panel pressure
gauge reads the desired pressure.
The membrane regulator is preset at the factory to maintain a specific pressure
drop across the membrane to assure purity of the nitrogen. Unauthorized
adjustment of this regulator can adversely affect the system performance. If this
regulator has been adjusted by mistake, please contact Proton OnSite Technical
Service for further guidance.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
5.4 Normal Operation
The Nitrogen Generator is designed to provide gas when demanded and remain in idle
when no gas is required. When demand stops the onboard compressors will continue to
operate until the onboard air tank is full, at which time the compressors will stop until
pressure in the onboard air tank lowers. The Nitrogen Generator is designed so the
onboard compressors cycle between operation and idle to increase the life of the
compressors. Furthermore, if demand only requires one compressor to run, the Nitrogen
Generator will automatically operate the compressor with fewer operating hours.
To further extend the life of the Nitrogen Generator it should be turned off at the
ON/OFF switch when nitrogen is not needed for extended periods of time.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
5.4.1 Alarms
Table shows the alarms associated with the Nitrogen Generator. When an alarm or
message is active, it will scroll across its associated screen location as shown in Figure 5
and defined in Table 5. If no alarm or message is present, the associated screen location
will be blank. The location numbers shown in Figure 5 are for reference only.
Location
1
2
3
4
5
6
7
8
9
Description
Compressor A Overload
Compressor B Overload
Loss of 24 VDC PLC
Air Pressure Transducer Out of Range
Nitrogen Pressure Transducer Out of
Range
Nitrogen Pressure is 10 PSI Greater than
Air Pressure
Compressor A Needs Refurbishment
Compressor B Needs Refurbishment
Filter Maintenance Required
Type of Alarm
System Shutdown?
Alarm
Alarm
Alarm
Alarm
Yes
Yes
Yes
Yes
Alarm
Yes
Alarm
Maintenance
Maintenance
Maintenance
Yes
No
No
No
Table 5 Nitrogen Generator Alarms
Alarm and Maint Messages
1
4
7
2
5
8
Alarm Reset
3
6
9
Prev
Figure 5 Alarm and Maintenance Message Locations
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
6 Maintenance
Maintenance of the Nitrogen Generator is important to ensure long life of the equipment.
To begin any maintenance operation, the Nitrogen Generator should be turned off and
unplugged from the electrical source of power.
1.
2.
3.
4.
Turn off power to the Nitrogen Generator
Unplug the Nitrogen Generator at the rear of the unit
Remove the side covers of the Nitrogen Generator
Carefully remove the bonding wires on the covers (See Figure 6)
Ensure the bonding wires are reconnected to all covers when refitting.
Figure 6 Cover bonding connection
Once every month the manual drains on the carbon filter housing described below should
be checked to ensure excessive amounts of moisture are not getting past the initial
coalescing element.
Interval: Every
Component
3 Months / 2000 hours
6 Months / 4000 hours
6 Months / 4000 hours
6000 hours
F100A, F100B, Compressor
Inlet Filter
F113, Coalescing Filter
F420, Carbon Filter
Compressors
Section
6.1
6.1
6.1
6.2
Table 6 Maintenance Schedule
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
6.1 Filter Maintenance
After every 2000 hours of operation measured by an onboard timer, a Filter Maintenance
Required message will be displayed on the operator interface. There are three types of
filter elements requiring replacement at a minimum interval. One filter type is a paper
element for the intake of each compressor and is designated F100A, F100B. These filters
should be replaced quarterly or every 2000 hours of operation. The remaining types of
elements are a carbon element, F420, and a coalescing element, F113. Each of these
elements should be changed after 4000 hours of operation. The frequency of filter
element change will ultimately be determined by quality of the input air; therefore, will
be site specific. The filter element locations are shown in Figure 7. An annual
maintenance kit is available which provides a filter set to satisfy the minimum change
interval requirement. Please contact Proton OnSite for part number and pricing of this
kit.
Carbon Filter
F420
Air Inlet Filter
F100A, F100B
Coalescing Filter
F113
Figure 7 Filter Element Locations
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
6.1.1 Filter Replacement
1. Isolate the Nitrogen and Air Out from your instrumentation by directing the nitrogen
and air product to a vent. Alternatively, by closing the ball valves at the back of the
unit and disconnecting the generator from your process.
2. Turn off the Nitrogen Generator and unplug the AC power at the rear of the unit.
3. Slowly open the ball valves to release the air and nitrogen pressure on the system to a
vent location.
4. Allow the Nitrogen Product pressure to bleed down to zero gauge pressure on the
mechanical Nitrogen product gauge.
5. Remove the Nitrogen Generator left side cover by turning the capture screw 90
degrees and swinging the cover downward. To fully remove the cover, unplug the
green bonding wire at the bottom of the cover.
6. Replace the Coalescing and Carbon filters as follows
a) Disconnect the push to connect drain fitting from both sides of the bottom of the
lower filter housing (Figure 8). A flat screwdriver or a firm grasp of the fitting
collet will be required to disengage the tube from the fitting.
Condensate Drain Line
Figure 8 Condensate Drain Line Removal
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Installation, Operation & Maintenance Manual
b) The housings for the filter elements can now be opened so the elements may be
replaced.
The filter housing bowls and the filter elements utilize O-Rings for sealing. Tools are
not required to secure these housings and are designed to be hand tight.
Figure 9 Filter Housing Bowl Removal
Figure 10 Coalescing Filter Element
Figure 11 Carbon Filter Element
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
c) Install the new element.
Figure 12 New Element Installation
d) Replace the housing (hand tight)
e) Reinstall the condensate drain lines to the coalescing filter housing previously
removed (see Figure 8).
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
5. Replace the Compressor Intake Filters as follows
a) Remove the housing from each compressor inlet filter by pressing in and turning
the cover CLOCKWISE.
Figure 13 Compressor Intake Filter Housing Removal
b) Remove and replace paper filter element
Figure 14 Compressor Inlet Paper Filter
c) Reinstall filter housing.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
6. Reconnect the ground wire and reinstall Nitrogen Generator side cover
7. Return the Nitrogen Generator to service by plugging in and turning the switch to
ON.
8. Reset the Generator Filter Operational Hours timer as follows
a. On the operator interface press Next or Prev until the Filter Hours screen is
displayed.
Filter Hours
3
Reset
PSWD
Prev
Next
Figure 15 Filter Hours Display
b. Press the blank key underneath the Reset PSWD key.
c. Enter the password 6782005 as shown in Figure 16. Use the side to side
arrows
to select location and the up and down arrows
to select
the number.
6782005
Esc
Figure 16 Filter Reset Display
d. Press the
key to enter the password and reset the filter hours.
9. Verify the desired pressure displays on the front panel pressure gauge.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
6.2 Compressor Maintenance
The Nitrogen Generator is equipped with a display on the front panel which indicates
when the compressors need servicing. An internal timer tracks the usage of each
compressor and after either compressor reaches 6000 hours of operation, the maintenance
alarm will be activated
Once the alarm displays, contact Proton Onsite technical service (See Section 2.4) to
obtain the latest information and service kits and passwords to reset the timers for each
compressor.
The Nitrogen Generator will continue to operate with the maintenance Alarm illuminated,
but to ensure continuous trouble free operation; compressor maintenance should be
performed at the nearest opportunity.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
7 Troubleshooting
Problem
Nitrogen Generator will not turn on and the
power light will not illuminate.



Possible Solution
Ensure power cord is plugged in.
Verify Site power is available.
Contact Proton OnSite
Compressors are running but pressure is
not building.

Contact Proton OnSite

One of the compressors has
exceeded its capacity and has
overloaded.
Contact Proton OnSite
The associated compressor has
reached 6000 hours of operation
and is due for service.
Contact Proton OnSite
The filter timer has reached 2000
hours and the onboard filters need
to be changed. See 6.1 Filter
Maintenance Schedule
System is not supplying full output
Compressor A Overload
Compressor B Overload

Compressor A Needs Refurbishment.
Compressor B Needs Refurbishment

Filter Maintenance Required message
displayed.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
8 APPENDIX A - FORMS
8.1 Filter Element Change Log
Use the form below to record the coalescing and carbon filter element change out dates.
The recommended change interval is six months for all elements.
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N341M LCMS Laboratory Nitrogen Generator
Installation, Operation & Maintenance Manual
8.2 Customer Registration Form
Please fill out the form on the last page, remove it from the manual, and fax it to Proton
OnSite (Fax Number: 1-203-949-8016) to ensure your Nitrogen Generator is properly
registered. The form may also be sent by mail to the following address:
Customer Service
Proton OnSite
10 Technology Drive
Wallingford, CT 06492
Proper registration is important for product support and automatic notification regarding
routine maintenance.
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Installation, Operation & Maintenance Manual
CUSTOMER REGISTRATION FORM
N341M LCMS Laboratory Nitrogen Generator
Generator Model Name
Generator Serial Number
From what supplier did you purchase the
generator?
Name of your company?
Company website address?
The application for your nitrogen generator?
Your name?
Your title?
Your phone number with country code?
Your fax number with country code
Your e-mail address?
The place where the generator is located (city,
state, country)
Are you the person responsible for the
operation of the nitrogen generator?
Do you have any questions at this time that
you need Proton OnSite to answer?
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