Parker G1 User manual

aerospace
climate control
electromechanical
filtration
fluid & gas handling
hydraulics
pneumatics
process control
sealing & shielding
FR
DE
IT
NL
Nitrogen Gas Generator
G1 - G9
Original Language
User Guide / Gebruikershandleidi / Benutzerhandbuch /
Guide d’utilisation / Guía del usuario / Manuale utente
EN
ES

13mm
Prior to powering up the generator, unscrew the M8x20mm packing bolt from the compressor mounting assembly using a
13mmspanner. Failure to do this will cause irreparable damage to the generator and will invalidate the warranty.
Voorafgaand aan het aanzetten van de generator, schroef de bout M8x20mm verpakking van de compressor montage montage
met behulp van een 13mm sleutel. Verzuim om dit te doen zal leiden tot onherstelbare schade aan de generator en dan vervalt de
garantie.
Vor dem Antreiben der Generator, schrauben Sie den M8x20mm los, der der der Bolzen vom Kompressor einpackt Zusammenbau
besteigt 13 Mm verwendet Schraubenschlüssel. Misserfolg, das zu tun, wird nicht wiedergutzumachenden Schaden dem
Generator verursachen und wird die Garantie ungültig machen.
Avant de brancher en haut le générateur, dévissez le M8x20mm le verrou emballant du compresseur l'assemblage montant
utilisant 13 millimètres clé de serrage. L'échec de le faire provoquera le dommage irréparable au générateur et infirmera la
garantie.
Antes del impulso el generador, desatornille el M8x20mm que embala el cerrojo del compresor que monta la asamblea usando 13
mm llave de tuerca. El fracaso de hacer este causará el daño irreparable al generador e invalidará la garantía.
Prima di alimentare il generatore, il bullone svitare imballaggio M8x20mm dal compressore di assemblaggio di montaggio
utilizzando una chiave 13mm. Mancato di fare questo causerà danni irreparabili al generatore e invalidare la garanzia.

G1 - G9
i
Contents
1. Safety Information ............................................................................1
1.1 Markings and symbols ..........................................................................................2
2. Description ........................................................................................3
2.1 Technical Specification ........................................................................................4
2.1.1 Dimensions ............................................................................................5
2.2 Unpacking the Generator ......................................................................................6
2.3 Overview of the equipment .................................................................................6
3. Installation and Commissioning .....................................................7
3.1 Recommended System Layout .............................................................................7
3.2 Mechanical Installation ........................................................................................8
3.3 Electrical Installation ............................................................................................9
4. Operating the equipment .................................................................10
4.1 Overview of controls ............................................................................................10
4.2 Starting the generator ...........................................................................................10
4.3 Economy Mode (Optional) ...................................................................................12
4.4 Rapid Cycle ..........................................................................................................12
4.5 Generator Shutdown Procedure ............................................................................13
4.5.1 Depressurisation .....................................................................................13
5. Maintenance ......................................................................................14
5.1 Cleaning ................................................................................................................14
5.2 Service Intervals ...................................................................................................14
5.3 Service Kits ..........................................................................................................15
6. Troubleshooting ...............................................................................16
Warranty ............................................................................................17

G1 - G9
1
1. Safety Information
Important: Do not operate this equipment until the safety information and instructions in this user guide have been read and understood by all
personnel concerned.
Only competent personnel trained, qualified, and approved by domnick hunter should perform commissioning, service and repair
procedures.
Nitrogen is not a poisonous gas but, in a concentrated form, there is a risk of asphyxiation.
Use of the equipment in a manner not specified within this user guide may impair safety and invalidate your warranty.
When handling, installing or operating this equipment, personnel must employ safe engineering practices and observe all related regulations,
health & safety procedures, and legal requirements for safety.
Ensure that the equipment is depressurised and electrically isolated, prior to carrying out any of the scheduled maintenance instructions specified
within this user guide.
Most accidents that occur during the operation and maintenance of machinery are the result of failure to observe basic safety rules and
procedures. Accidents can be avoided by recognising that any machinery is potentially hazardous.
domnick hunter can not anticipate every possible circumstance which may represent a potential hazard. The warnings in this manual cover
the most known potential hazards, but by definition can not be all-inclusive. If the user employs an operating procedure, item of equipment or
a method of working which is not specifically recommended by domnick hunter the user must ensure that the equipment will not be damaged
or become hazardous to persons or property.
Should you require an extended warranty, tailored service contracts or training on this equipment, or any other equipment within the domnick
hunter range, please contact your local domnick hunter office.
Details of your nearest domnick hunter sales office can be found at: www.domnickhunter.com.

G1 - G9
2
1.1 Markings and symbols
The following markings and international symbols are used on the equipment and within this user guide:
Warning
Highlights actions or procedures which, if not per-
formed correctly, may lead to personal injury or
death.
Safety Glasses must be worn.
Caution
Highlights actions or procedures which, if not per-
formed correctly, may lead to damage to this equip-
ment.
Wear ear protection.
Warning
Highlights actions or procedures which, if not per-
formed correctly, could lead to electric shock.
When disposing of old parts always follow local waste dis-
posal regulations.
Conformité Européenne When disposing of electrical parts always follow local
waste disposal regulations.
NITROGEN (N
2
)
GAS
NON-FLAMMABLE
DO NOT BREATHE
COMPRESSED
Asphyxiant in high
concentrations. No odour
Slightly lighter than air.
Ensure adequate ventilation.
Breathing 100% nitrogen will produce
immediate unconsciousness and death
due to lack of oxygen.
NITROGEN (N2)
NITROX
DO NOT BREATHE
Asphyxiant in high concentrations. No odour. Slightly lighter than air. Ensure
adequate ventilation. Breathing 100% nitrogen will produce immediate
unconsciousness and death due to lack of oxygen.
NON-FLAMMABLE COMPRESSED GAS
MAX PRESSURE 10barg (145psi). USE ONLY WITH EQUIPMENT
COMPATIBLE WITH THIS PRESSURE.
WARNING
GENERATOR MUST BE SHUT DOWN AND DEPRESSURISED BEFORE ANY
MAINTENANCE (REFER TO MANUAL)
DANGER
LIVE TERMINALS ENCLOSED
DISCONNECT THE MAINS SUPPLY BEFORE REMOVING THIS COVER
DANGER
DISCONNECT THE MAINS SUPPLY BEFORE REMOVING THIS COVER
CALIBRATION VOID IF SEAL BROKEN

G1 - G9
3
2. Description
domnick hunter Nitrogen Generators are designed to provide a constant supply of nitrogen gas to a pre-selected purity (and clean dry
compressed air on some options).
The technology used to produce a continuous flow of nitrogen (and clean dry compressed air on some options) is pressure swing adsorption
(PSA). This technology uses a combination of molecular sieves to selectively remove oxygen and other contaminants from the compressed air,
leaving nitrogen.
The column(s) of molecular sieve alternate between purification and regeneration modes to ensure a continuous nitrogen supply.
The gas generators are available with integrated compressor (option 1) or without integrated compressor (option 0). Option 0 units require a
supply of compressed air to ISO8573.1 2001 air quality class 2.-.1.

G1 - G9
4
2.1 Technical Specification
Nitrogen N2
Models
Outlet
Pressure
bar g
Flowrate
L/min. Purity% O2
Connections
BSP
Air inlet
(Opt 0)
Gas
Outlet
G1 050.55 10 ppm 1/4” 1/8”
1 0.75 10 ppm
G2 051.5 10 ppm 1/4” 1/4”
1 3.0 10 ppm
G3
0
5
2.5 100 ppm
1/4” 1/4”
1 4.0 0.1
2 5.0 0.5
3 7.0 1
4 8.0 2
G4
0
5
5.0 100 ppm
1/4” 1/4”
1 6.0 0.1
2 10.0 0.5
3 12.5 1
4 14.0 2
5
7
12.0 0.5
1/4” 1/4”
6 18.0 0.5
7 20.0 1
8 25.0 1
Zero N2
G5 0 5 1.0 10 ppm 1/4” 1/8”
N2 & Dry Air
G6 0 5 N2: 0.6 10 ppm 1/4” 1/8”
Air: 1.5 -55pC adp
G7 0 5
N2: 3.0 10 ppm
1/4” 1/4”
Air: 3.0 -55pC adp
Dry Air
G6 0 5 3.0 -55pC adp 1/4” 1/8”
G9 0 5 6.0 -55pC adp 1/4” 1/8”
Description Units
Inlet Air Quality ISO 8573.1:2001, Class 2.-.1
Maximum Operating Pressure bar (psi) 10 (145)
Input Voltage V ac 120/230V ac 50/60Hz ± 10%
Temperature °C (°F) 5 - 45 (41 - 113)
Altitude m (ft.) <2000 (6562)
Pollution Degree 2
Installation Category II
Humidity 50% @ 40°C (80% MAX 31 °C)
IP Rating IP20 / NEMA 1

G1 - G9
5
2.1.1 Dimensions
DOMNICKHUNTER LTD.
DANGER
DISCONNECTTHE
MAINSSUPPLYBEFORE
REMOVINGTHIS COVER
DISCONNECT THE
MAINSSUPPLYBEFORE
REMOVINGTHIS COVER
LIVETERMINALS
ENCLOSED
WARNING
GENERATORMUST BE SHUT
DOWNAND DEPRESSURISED
BEFORE PERFORMING
ANY MAINTENANCE
(REFER TO MANUAL)
WARNING
AB
C
Dimensions
MM.
(in)
Model
G1 G2 G3 G4 G5 G6 G7 G8 G9
A345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
345
(13.58)
B413
(16.26)
663
(26.1)
663
(26.1)
663
(26.1)
413
(16.26)
413
(16.26)
663
(26.1)
413
(16.26)
413
(16.26)
C846
(33.31)
894
(35.2)
894
(35.2)
894
(35.2)
846
(33.31)
846
(33.31)
894
(35.2)
846
(33.31)
846
(33.31)
Weight
Kg
(lb)
Model
G1 G2 G3 G4 G5 G6 G7 G8 G9
With
Compressor
52
(114.6)
77
(169.8)
77
(169.8)
77
(169.8)
51
(112.4)
54
(119)
80
(176.4)
50
(110.2)
50
(110.2)
Without
Compressor
56
(123.5)
90
(198.4)
90
(198.4)
90
(198.4)
55
(121.3)
58
(127.9)
93
(205)
54
(119)
54
(119)

G1 - G9
6
2.2 Unpacking the Generator
DOMNICKHUNTERLTD.
Remove the equipment from its packaging as shown below and check that it
has not been damaged in transit.
Warning
This generator is heavy and must not be manually lifted.
The following items have been included with your equipment:
Description
MIST-X Drain Kit (G4 Models Only)
Swagelok fittings
Mains supply cables
If any items are missing or damaged please contact your local domnick hunter
office.
2.3 Overview of the equipment
nn
DOMNICKHUNTERLTD.DOMNICKHUNTERLTD.
DANGERDANGER
DISCONNECTTHEDISCONNECTTHE
MAINSSUPPLYBEFOREMAINSSUPPLYBEFORE
REMOVINGTHISCOVERREMOVINGTHISCOVER
DISCONNECTTHEDISCONNECTTHE
MAINSSUPPLYBEFOREMAINSSUPPLYBEFORE
REMOVINGTHISCOVERREMOVINGTHISCOVER
LIVETERMINALSLIVETERMINALS
ENCLOSEDENCLOSED
WARNINGWARNING
GENERATORMUSTBESHUTGENERATORMUSTBESHUT
DOWNANDDEPRESSURISEDDOWNANDDEPRESSURISED
BEFOREPERFORMINGBEFOREPERFORMING
ANY MAINTENANCEANYMAINTENANCE
(REFERTO MANUAL)(REFERTOMANUAL)
WARNINGWARNING
USEONLYWITHUSE ONLY WITH
EQUIPMENTCOMPATIBLEEQUIPMENTCOMPATIBLE
WITHTHISPRESSUREWITHTHISPRESSURE
MAXPRESSUREMAXPRESSURE
10barg(145psi)10barg(145psi)
NITROXNITROX
DONOTBREATHEDONOTBREATHE
NITROGEN(N2)NITROGEN(N2)
NON-FLAMMABLENON-FLAMMABLE
COMPRESSEDCOMPRESSED
GASGAS
230V.AC230V.AC
FUSEFUSE
2A"T"HBC2A"T"HBC
5x20mm5x20mm
LISTEDLISTED
PROCESSCONTROLPROCESSCONTROL
EQUIPMENT2SD7EQUIPMENT2SD7
Dukesway,TeamValleyTradingEstate,Dukesway,TeamValleyTradingEstate,
Gateshead,TyneandWear,EnglandNE110PZGateshead,Tyneand Wear, England NE11 0PZ
Tel.[phone]Fax.[phone]Tel.[phone]Fax.[phone]
1
4
2
3
5
Key:
1 Controller
2 Lower service hatch
3 Upper service hatch
4 Pressure gauges and regulators (where fitted)
a Air pressure regulator
b Air receiver pressure gauge
c Air outlet pressure gauge
d Inlet air pressure gauge
e N2 outlet pressure gauge
f N2 receiver pressure gauge
g N2 Pressure regulator
5 Inlet / Outlet connections
230V.AC
FUSE
2A T HBC
5x20mm
Electrical Supply Inlet. (Label
indicates supply voltage and fuse
rating)
4a
4b 4c 4d 4e 4f
4g
4

Air inlet port 
(All option 0 generators)

Air MFC Outlet 
(G6, G7, G8 and G9 models only)

Mass Flow Control outlet
(All Models except G8 and G9)

N2 outlet port*
(G4 Models only)

Drain 
(G4 Models only)
Caution
The G4 generator must not be allowed to run and flow to atmosphere via the N2 Outlet. 
An external mass flow controller must always be used and set to the maximum outlet flow of the generator.

G1 - G9
7
3. Installation and Commissioning
Warning
Only competent personnel trained, qualified, and approved by domnick hunter should perform commissioning and
service procedures.
3.1 Recommended System Layout
Caution
Length of tubing between the generator outlet and application should not exceed 10m.
Basic Layout
Ref. Description
1 Generator
2 Shut off valve
3 Non return valve
4 Instrument(s)
Installation With Back-Up Supply
Ref. Description
5 Pressure regulator
6 Shut Pressure relief valve
7 Back-up cylinder
Installation For Steady & Cyclical Demand
Ref. Description
8 Generated gas storage vessel
Installation Cyclical Demand
Ref. Description
9 Sample evaporation
10 Fume cupboard
11 Glove box

G1 - G9
8
3.2 Mechanical Installation
1. The generator should be located indoors on a flat surface and protected from direct sunlight, moisture, and dust (Refer to section 2.1 of
this user guide for the generators environmental specification).

Position the generator as close to the application as possible whilst leaving sufficient free space for ventilation and access purposes as
shown.

DO NOT position the generator so that it is difficult to operate or disconnect.
2. Identify the required connection ports on the rear of the generator, remove the blanking plugs, and insert the Swagelok fittings supplied.
The inlet / outlet port configurations for each model are shown in table 3.3.

The G4 generator is factory set to deliver gas to the N2MFC Outlet. If it is to be integrated into a system with an external mass flow
controller (i.e. standalone or incorporated into the application instrument) the generator must be reconfigured so that its integral mass
flow controller is bypassed. When the generator has been re-configured the gas will be delivered to the N2 Outlet.

Do NOT reconfigure the generator at this stage as the integral mass flow controller must be used to achieve the specified purity. Insert
a ball valve into the N2 MFC outlet and leave in the open position.
Connection
Connection Size (BPS)
Pipe MaterialG1 G2 G3 G4 G5 G6 G7 G8 G9

Air Inlet 1/4”
(Option O Only) Copper or Nylon

Air MFC Outlet) 1/8” 1/4” 1/8” 1/8”
Copper or
Stainless Steel

N2 MFC Outlet 1/8” 1/4” 1/4” 1/4” 1/8” 1/8” 1/4”

N2 Outlet 1/4”

Drain Outlet 1/8”-1/4”
* The G4 generator has two Nitrogen outlets only one of which is ever used at any one time.
Table 3.3

G1 - G9
9
3. Connect the Air inlet port of the generator (option 0 only) to a suitable compressed air supply using either copper or nylon tubing.
The air quality must meet the requirements of ISO 8573.1:2001, Class 2. -. 1 and should not exceed 9 Bar.
4. The Mist-X exhaust should be connected to the Drain outlet port (G4 Models only). It is recommended that the silencer be placed in
a suitable container or drain so that the mist is contained safely.
5. All piping and components external to the generator should be suitable for the application and rated to at least the maximum operating
pressure of the generator. Copper or stainless steel pipes should be used to connect the gas outlets to the application instrument and
sized in accordance with table 3.3. These pipes should be adequately supported to prevent damage and leaks in the system.
Installation Kits
Description dh Part No: Contents
11/8” N2LAB Fittings Basic 
Accessories kit. 606272372
Ball. valve 1/4” BSP (x1) 
1/4” Non return valve (x1) 
Reducer 1/4” - 1/8” BSP (x4) 
Adaptor 1/8” BSP M 1/8” OD (x4)
21/4” N2LAB Fittings Basic Accessories
kit. 606272378
Ball. valve 1/4” BSP (x1) 
1/4” Non return valve (x1) 
Reducer 1/4” - 1/8” BSP (x4) 
Adaptor 1/8” BSP M 1/4” OD (x4)
3.3 Electrical Installation
Attach the appropriate mains supply cable provided to the IEC 320 socket located on the rear of the generator and connect to the
electrical supply.
If a cordset, other than the one provided, is used to connect the equipment to the electrical supply ensure that it is suitably rated for
the application and in accordance with local and national code regulations.
Warning
The equipment must be bonded to earth through the cordset.
MIST-X

G1 - G9
10
4. Operating the equipment
4.1 Overview of controls
1. 16x2 line menu display.
2. Control key pad used for menu navigation and generator
operation.
3. Tri coloured System Check Indicator.
Indicator Generator Status
Green / Red - Generator Cycle
Amber - Standby Mode
4.2 Starting the generator
Prior to connecting the generator to the electrical supply, ensure that all connections have been removed from the gas outlets on the rear of
the generator.
On G4 models, the integral mass flow controller (MFC) must be configured so that the gas is directed to the N2MFC outlet. The generator
will not reach purity if the gas flows to atmosphere through the N2outlet. Once the MFC has been configured, fit a ball valve to the N2MFC
outlet and leave it in the open position.
Mass Flow Controller configuration.
1. Remove the side panel from the generator.


The Mass Flow Controller (MFC) and bypass valve assembly is located
directly behind the N2MFC outlet.
2. Rotate the bypass valve handle to the desired position as shown:

Position (A) directs the gas through the MFC to the N2 MFC outlet.

Position (B) directs the gas directly to the N2 outlet therefore bypassing
the MFC.
3. Replace the side panel of the generator.

Ru n
St andby
G1 - G9
11
Connect the generator to the electrical supply and wait. The generator will default to
standby mode.
Note: The G4 generator will run through an initialisation routine prior to going into
standby mode. This routine takes approximately 60 seconds.
00000 00Hr s:
St andby
Press to start the generator.
The menu will change as shown and the system check LED will cycle between green
and red.
Caution
Prior to connecting the generator to the system it must cycle for a minimum of 3 hours to reach the specified
purity. Generators with a specified purity of 10ppm and 100ppm must cycle for a minimum of 6 hours.
Once the generator has reached its specified purity it can be connected to the application. 
If you are using the G4 generator with an external MFC:
1. Close the ball valve on the N2MFC outlet.
2. Disconnect the generator from the electrical supply.
3. Connect the application piping to the N2outlet.
4. Reconfigure the MFC bypass valve so that the gas is delivered to the N2outlet as described.
5. Reconnect the generator to the electrical supply and wait. When the generator reaches standby mode press .
6. The ball valve may be removed from the N2MFC outlet and replaced with the blanking plug.
The system should reach the specified purity within an hour. No further user intervention is required.
Caution
If the operation of the generator is interrupted and the receiver pressure falls below 5 Bar, this start up
sequence must be followed in its entirety including. If the receiver pressure does not fall below 5 Bar it is
recommended that the generator be run for 1-hour off line to allow the specified purity to be achieved.

G1 - G9
12
4.3 Economy Mode (Optional)
Economy mode is the function whereby the generator will detect and monitor any back pressure from the application. If the pressure
exceeds a limit for a preset time (i.e. the application requires no gas) the generator will stop cycling and turn off all valves.
When the application requires gas, the back pressure will drop and the generator will restart, defaulting into “Rapid Cycle”.
If the Economy option has been fitted it can be enabled as follows:
Ru n
St andby
From he “Standby menu” press [ ] and [ ] together.
Economy: on
The Economy option can enabled and disabled using the [ ] and [ ] keys.
Once enabled press [ ] to return to the standby menu.
Economy
00000 00Hr s:
When the generator is running in economy mode, the menu will change from the normal
standard operating menu to the economy menu as shown.
00000 00Hr s:
Cl eaningBed
Whilst in economy mode the generator will occasionally restart and display “Cleaning Bed”,
this will l flush the system and ensure that the unit reaches the desired purity faster when
returned online.
4.4 Rapid Cycle
Rapid cycle is the function of flushing the system of impurities in order to allow the generator to reach desired purity faster. In this mode the
generator will not deliver gas to the application for up to 15 minutes and will activate every time the generator comes out of standby or
economy mode.
If the Rapid Cycle option has been fitted it can be enabled as follows:
Ru n
St andby
From he “Standby menu” press [ ] and [ ] together.
St ar t Opt i ons
Rapi dCy cle:on
The Rapid Cycle option can enabled and disabled using the [ ] and [ ] keys.
00000 00Hr s:
Rapi dCy cle
Once enabled press [ ] to return to the standby menu.
The Rapid Cycle will start when ever the generator comes out of “Standby” mode or
“Economy” mode.
The menu will change as shown.
Important: The purity of the gas will deteriorate when the generator is in standby or economy mode. The following table gives an indication
of the length of time required for the generator to return to the specified purity following economy operation.
Time in Standby / Economy
Mode (Hours)
Time To Deliver High Purity
Gas (Minutes)
420
12 20
24 20
48 30
48+ 60

G1 - G9
13
4.5 Generator Shutdown Procedure
Close the external shut off valves.
00000 00Hr s:
St andby
Press [ ] to put the generator into standby.
ShuttingDo wn
The menu will change as shown to indicate that the generator is shutting down.
The generator will continue to run for up to 10 minutes in order to allow the cycle to
complete and to ensure that the inlet piping and CMS columns are fully de-pressurised.
Once complete the menu will default to “Standby”.
Warning
The internal storage receivers of the generator will still be pressurised. These MUST be depressurised if the generator
is to be serviced, shipped or placed into storage.
Ru n
St andby
Once complete the menu will default to “Standby”.
4.5.1 Depressurisation
If the generator is not fitted with the economy option:
With he generator in “Standby” disconnect the generator from the application option.
Observe the “Pressure gauges” located behind the upper service hatch. When all of the pressure gauges read 0 bar the generator is
depressurised.
If the generator is fitted with the economy option:
Disconnect the generator from the application piping and the electrical power supply.
Press and hold [ ] and reconnect the generator to the electrical power supply.
Depr essur i si ng
Po0. 00
The generator will begin to depressurise as indicated by the on screen pressure
reading “Po *.*”.
Ru n
St andby
When the generator is completely depressurised it will revert to standby mode.
Observe the “Pressure Gauges” located behind the upper service hatch to ensure that
they read 0 bar.
Disconnect the generator from the electrical power supply.
Where applicable disconnect the generator from the compressed air supply.
Warning
The compressor heads are very hot. Allow the generator to cool for 30 minutes following shutdown.

G1 - G9
14
5. Maintenance
The recommended Service procedures identified in table 5.2 and all other repair and calibration work should be undertaken by a domnick
hunter trained, qualified and approved engineer.
5.1 Cleaning
Clean the equipment with a damp cloth only and avoid excessive moisture around any electrical sockets. If required you may use a mild
detergent, however do not use abrasives or solvents as they may damage the warning labels on the equipment.
5.2 Service Intervals
Description Of Maintenance Required Typical Recommended Maintenance
Interval
Component Operation
Daily
Weekly
6Months
4000 Hrs
12 Months
8000 Hrs
24 Months
16000 Hrs
36 Months
24000 Hrs
Generator
Check POWER ON indicator located
on control panel is illuminated and
cycles from red to green
Generator Check drain valve is discharging on
a regular basis.
Generator Check for leaks
Generator Check pressure gauges during
operation
Generator Ensure there is ventilation clearance
around generator
Generator Check condition of electrical supply
cables and conduits
Generator Replace filters
Recommended Service A
Generator
Replace compressor (option 1 only)
Models: G2, G3, G4, G7
Recommended Service B
Generator
Replace compressor (option 1 only)
Models: G1, G5, G6, G8, G9
Recommended Service B
Generator Replace Valves
Recommended Service C
- Check - Replace
Table 5.2