Global MX PrimeGen Installation and user guide

Global Power Technologies /www.globalte.com
MX PrimeGen
Power Generator
SERVICE AND MAINTENANCE MANUAL

303453 Rev1 | MX PrimeGen – Service Manual i
TABLE OF CONTENTS
1COPYRIGHT, LIABILITY, AND CONTACT INFORMATION ...........................................................1
2IMPORTANT SAFETY INSTRUCTIONS.......................................................................................2
2.1 MANUAL ICONS AND SAFETY BANNERS.......................................................................................4
2.2 TECHNICALLY QUALIFIED PERSONNEL .........................................................................................4
2.3 BATTERY SAFETY ..........................................................................................................................4
2.4 START-STOP OPERATIONS............................................................................................................5
3DATA PLATE............................................................................................................................6
4RECOMMENDED MAINTENANCE INTERVALS ..........................................................................7
4.1 STANDBY OIL CAPACITY SYSTEMS ................................................................................................7
4.2 EXTENDED RUNTIME OIL CAPACITY SYSTEMS..............................................................................8
5RECOMMENDED PARTS FOR SERVICE .....................................................................................9
5.1 STANDBY OIL CAPACITY SYSTEMS ................................................................................................9
5.2 EXTENDED RUN OIL CAPACITY SYSTEMS....................................................................................10
6TOOLS REQUIRED FOR SERVICE.............................................................................................11
7ARRIVAL ON-SITE..................................................................................................................12
8AIR SYSTEM ..........................................................................................................................13
9BATTERY SYSTEM..................................................................................................................14
9.1 BATTERY INSPECTION ................................................................................................................14
9.2 BATTERY REPLACEMENT ............................................................................................................15
10 OIL SYSTEM ..........................................................................................................................16
11 COOLANT SYSTEM ................................................................................................................19
11.1 CHANGING COOLANT.................................................................................................................19
11.2 REPLACING COOLANT PUMP .....................................................................................................22
11.3 TOPPING UP THE RADIATOR FLUID ............................................................................................22
12 REPLACING O2SENSOR .........................................................................................................23
13 CHECKING AND ADJUSTING VALVE CLEARANCES..................................................................24
14 IGNITION SYSTEM.................................................................................................................27
14.1 SPARK PLUG REPLACEMENT ......................................................................................................27
14.2 SPARK PLUG WIRE REPLACEMENT .............................................................................................27
14.3 CHANGE IGNITION COILS ...........................................................................................................27
15 CYLINDER COMPRESSION TEST .............................................................................................28
16 MAINTENANCE HOURS RESET...............................................................................................29
17 MX PRIMEGEN SITE INSTALLATION & COMMISSIONING REPORT .........................................30
18 MX GENERATOR MAINTENANCE LOG ...................................................................................32

303453 Rev1 | MX PrimeGen – Service Manual ii
TABLE OF FIGURES
Figure 3-1 – Data Plate............................................................................................................................6
Figure 3-2 – MX Model Tree ...................................................................................................................6
Figure 8-1 – Engine Air Intake Figure 8-2 – Engine Air Circulation .....................................................13
Figure 9-1 – MX Batteries ....................................................................................................................14
Figure 9-2 – MX Battery Clamp ............................................................................................................15
Figure 10-1 – Standby Oil Configuration ...............................................................................................16
Figure 10-2 – Long Run Oil Configuration .............................................................................................17
Figure 10-3 – MX Lower Panel Grommet..............................................................................................17
Figure 10-4 – Oil Reservoir....................................................................................................................18
Figure 11-1 – Radiator Assembly .........................................................................................................19
Figure 11-2 – Pump Button Location ....................................................................................................20
Figure 11-3 – Alternate Pump Button Location ....................................................................................21
Figure 12-1 – O2Sensor Location..........................................................................................................23
Figure 13-1 – Pulley & Engine Block Marking Alignment ......................................................................24
Figure 13-2 – Rocker Arm & Valve Stem ...............................................................................................24
Figure 13-3 – Pulley & Engine Block Marking Alignment ......................................................................25
Figure 13-4 – Rocker Arm & Valve Stem ...............................................................................................25
Figure 14-1 – MX Ignition System .........................................................................................................27
Figure 15-1 – Jumper Wire Placement..................................................................................................28
TABLES
Table 4-1 - Maintenance Schedule for Standby Oil Capacity Systems.....................................................7
Table 4-2 - Maintenance Schedule for Extended Runtime Oil Capacity Systems ....................................8
Table 5-1 - Maintenance Materials for Standby Oil Capacity Systems....................................................9
Table 5-2 - Maintenance Materials for Extended Run Oil Capacity Systems.........................................10

Global Power Technologies COPYRIGHT, LIABILITY, AND CONTACT INFORMATION
303453 Rev1 | MX PrimeGen – Service Manual 1
1COPYRIGHT, LIABILITY, AND CONTACT INFORMATION
This manual provides instructions for the installation, operation, performance, basic maintenance and
troubleshooting of the MX Power Generator. In the event of unforeseen or special problems, do not
take unauthorized remedial action. Contact GPT’s Customer Service department to obtain the
necessary information. All agreements, assurances, and legal relationships as well as all obligations of
GPT, shall be governed by the respective valid purchase contract which is not influenced by the content
of this document. For any technical issues or questions:
Global Power Technologies – Head Office
#16, 7875 – 57 Street SE Phone: [phone]
Calgary, Alberta Fax: [phone]
Canada T2C 5K7 Customer Service/Technical Support: 1-403-720-1190
Copyright
Copyright © 2022 by Global Power Technologies (GPT). All rights reserved. No
part of this manual may be reproduced without permission in writing from GPT,
except by a reviewer who may quote brief passages or reproduce illustrations in a
review with appropriate credit; nor may any part of this manual be reproduced,
stored in a retrieval system, or transmitted in any form or by any means –
electronic, photocopying, recording, or otherwise – without prior permission in
writing from GPT.
Liability
Liability The user is expressly warned to consider and adopt all safety precautions
that might be indicated by the activities herein and to avoid all potential hazards.
The user assumes all risks in connection with such instructions. GPT shall not be
liable for any special, consequential, exemplary, or other damages resulting, in
whole or part, from the user’s use of, or reliance upon this material.
Comments
GPT has compiled this publication with care, but GPT does not warrant that the
information in this publication is free of errors. Comments, criticisms, and
suggestions regarding the subject matter are invited. Any errors or omissions in
the data should be brought to the attention of GPT. If required, affected pages
will be revised and issued.

Global Power Technologies IMPORTANT SAFETY INSTRUCTIONS
303453 Rev1 | MX PrimeGen – Service Manual 2
2IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS – This manual contains important instructions for the MX PrimeGen Power
Generator that should be followed during installation and maintenance of the generator and its
batteries. Read the following safety warnings before beginning assembly, installation, or maintenance
of the MX Power Generator.
1. Observe all prescribed accident prevention and safety rules. Do not perform work on the MX Power
Generator alone—make sure there is somebody else working with you.
2. The installation of the MX Power Generator must conform with local codes or, in the absence of
local codes, with CSA-B149.1 – Natural Gas and Propane Installation Code.
3. When installed, the MX Power Generator must be electrically grounded in accordance with local
codes, or in the absence of local codes, with CSA C22.1 – Canadian Electrical Code.
4. The MX Power Generator is not intended to be used in underground mines. Do not use the MX
system in underground mines.
5. The MX Power Generator and its individual shut-off valve must be disconnected from the gas supply
piping system during any pressure testing of that system at test pressures more than 34 kPa (5 psi).
6. The MX Power Generator must be isolated from the gas supply piping system by closing its
individual manual shut-off valve during any pressure testing of the gas supply piping system at test
pressures equal to or less than 34 kPa (5 psi).
7. Do not use the MX Power Generator if any part has been under water. Immediately call a qualified
service technician to inspect and to replace any part of the control system, gas control and
generator that has been under water.
8. The MX Power Generator is designed to combust gaseous fuels which will result in combustion
products of heat, carbon dioxide and water vapor. It may contain traces of carbon monoxide,
unburnt hydrocarbons, and nitrous oxides. Emissions from combustion will depend on generator
set-up and operation as well as the composition of the gas feed. It is imperative that these
instructions be followed, and that gas supplied meets the gas specifications outlined in this manual.
9. The MX Power Generator must be mechanically installed according to the instructions contained
within this manual. It must be securely anchored to a non-combustible surface when installed.
10. Installation and repair must be performed by a qualified service person. The MX Power Generator
should be inspected before use and at least annually by a qualified service person. More frequent
cleaning may be required as necessary. It is imperative that control compartment, air intakes, and
circulating air passageways of the system are kept clean.
11. The MX Power Generator uses an internal combustion engine. Qualified service personnel should
have mechanical knowledge on how to maintain engine fuel, lubrication, ignition, and cooling
systems.
12. The MX Power Generator contains electrical and gas-related safety devices as identified throughout
this manual. Tampering or rendering inoperative any of these safety devices may result in personal
injury or death and possible damage to the equipment and is not permitted under any
circumstances.
13. The MX Power Generator has some parts constructed from sheet metal. Every effort is made to
ensure that edges have been deburred when manufactured, however sharp edges may still exist.
Be cautious when handling. Wear gloves for safety.

Global Power Technologies IMPORTANT SAFETY INSTRUCTIONS
303453 Rev1 | MX PrimeGen – Service Manual 3
14. Any guard or other protective device removed for servicing from the MX Power Generator must be
re-installed prior to operating the system.
15. The MX contains sub-systems that combust gaseous fuel and others that run high electrical loads,
all of which can pose high surface temperature hazards. Avoid exterior areas, as well as internal
components of the generator to avoid burns or clothing ignition when in operation or cooling down.
16. The MX Power Generator contains rotating parts, hot surface temperatures, and high voltages. It
also has remote start and stop capabilities. Do not begin work on the MX Power Generator unless
it is shut-off manually, switched to LOC mode, and locked out so that the system cannot be started
remotely or inadvertently. Follow the shutdown procedure in the MX Manual (302672).
17. The MX Power Generator uses natural gas or propane as fuel. In the event of a leak, there is a
possibility of a fire and explosion.
18. Lethal voltages are present in this system. The MX Power Generator has either 120/240 VAC
systems or 120/208 VAC as well as 24 VDC systems. Use accepted safety procedures for working on
all electrical circuits. Follow all local electrical safety regulations.
19. Study the MX Power Generator wiring diagrams and schematics before working on electrical
circuits and ensure that all tools used while working on electrical circuits are insulated.
20. The MX Power Generator contains batteries. Avoid touching live battery terminals and placing tools
on or near the batteries. These can provide dangerous voltages and currents, even when the system
is shut-off.
21. As soon as electrical cabinet doors are opened or terminal covers are removed, there is the danger
of contacting hazardous voltages. Any operations inside the cabinets or with exposed electrical
terminals must only be carried out by qualified electrical personnel. If in doubt, do not touch.
22. Sparking and arcing may occur if a wire is connected or disconnected with a heavy current flow.
Arcing can burn skin or eyes and damage equipment.
23. The MX Power Generator includes spark plug electrode, which needs to be accessed during
maintenance. Do not touch the conductor of a spark igniter electrode while it is energized.
24. The MX Power Generator is not intended for use as emergency power.
25. Keep the MX Power Generator’s installation site clear and free from combustible materials,
gasoline, and other flammable vapours and liquids. Maintain the minimum clearances specified in
this manual.
26. Fuel supplied to the MX Power Generator must not contain liquids. Liquid hydrocarbons in the fuel
supply pose a risk of fire and may result in serious damage and danger to the operator.
27. Do not exceed the fuel pressure stamped on the MX Power Generator’s data plate without factory
approval.
28. The MX Power Generator exhaust can be very hot. Do not touch any of the exhaust components or
bring exposed skin near hot exhaust gases.
29. When the MX Power Generator is operating, surface temperatures of the exhaust can approach
temperatures above 70°C (158°F). Avoid contact of skin and clothing with the surfaces of the
exhaust to avoid burns. The MX unit must be installed so that the risk of contact by people is
minimized.
30. The MX Power Generator is designed FOR OUTDOOR USE ONLY.

Global Power Technologies IMPORTANT SAFETY INSTRUCTIONS
303453 Rev1 | MX PrimeGen – Service Manual 4
2.1 MANUAL ICONS AND SAFETY BANNERS
WARNING!
A banner with the word “WARNING!” below an icon with an
exclamation point
within a red triangle contain important information that, if not adhered to, can cause
personal injury and/or property damage.
CAUTION!
A banner with the word “CAUTION!” below an icon with an exclamation point within
a red triangle contain important information that, if not adhered to, can cause
damage to the MX Power Generator.
NOTE: A banner with the word “NOTE:” contains supplemental information that provide
additional insight on specific topics throughout this manual.
2.2 TECHNICALLY QUALIFIED PERSONNEL
This manual contains necessary information for the correct operation of the MX Power Generator and
is intended for use by technically qualified service personnel. Qualified personnel are persons who are:
Familiar with the erection, installation, commissioning, and operation of the device and of the
system which is being installed or in which the device is being installed.
Capable of performing switching operations according to safety technology standards and are
authorized to switch the equipment on and off and to isolate it from voltage.
Have mechanical knowledge on how to maintain engine fuel, lubrication, ignition, and cooling
systems.
Instructed according to the standards of safety technology in the care and use of safety
equipment and trained in immediate rescue measures (first aid).
Completed instructions with appropriate confirmation by an appropriately qualified instructor.
2.3 BATTERY SAFETY
1. Servicing of batteries are to be performed or supervised by personnel knowledgeable of batteries
and the required precautions. Keep unauthorized personnel away from batteries.
2. When replacing batteries, use the same quantity and the following type batteries:
Type 31 AGM batteries, 12V, 100-105 Ah.
CAUTION!
Do not dispose of battery or batteries in a fire. The battery is capable of exploding.
CAUTION!
Do not open or mutilate the battery or batteries. Released electrolyte has been
known to be harmful to the skin and eyes and to be toxic.

Global Power Technologies IMPORTANT SAFETY INSTRUCTIONS
303453 Rev1 | MX PrimeGen – Service Manual 5
CAUTION!
A battery presents a risk of electrical shock and high short circuit current.
3. The following precautions are to be observed when working on batteries:
•Remove watches, rings, or other metal objects;
•Use tools with insulated handles;
•Wear rubber gloves and boots;
•Do not lay tools or metal parts on top of batteries;
•Disconnect charging source prior to connecting or disconnecting battery terminals; and
•Determine the battery is inadvertently grounded. When inadvertently grounded, remove
source of ground. Contact with any part of a grounded battery is capable of resulting in
electrical shock. The risk of such shock is reduced when such grounds are removed during
installation and maintenance (applicable to a generator not having a grounded supply circuit).
2.4 START-STOP OPERATIONS
1. The MX Power Generator is equipped with an Emergency Shutdown (ESD) button that acts as the
absolute emergency shutdown of the system. Operators must shut down the device prior to doing
any maintenance or repair on the system.
2. A manual shut-off valve must be installed according to local standards at the fuel inlet to allow
fuel supply to be cut off in the event of any problems. Refer to the MX Manual (302672) for
details.

Global Power Technologies DATA PLATE
303453 Rev1 | MX PrimeGen – Service Manual 6
3DATA PLATE
Figure 3-1 – Data Plate
Figure 3-2 – MX Model Tree
The data plate shows important information about the MX Power Generator and can be used as a
quick reference point when performing service or contacting GPT with questions. It is located on the
inside of the electrical panel cabinet door. When contacting GPT, indicate both the complete Model
Number and Serial Number of your MX unit.
The information listed on the data plate are as follows:
Inlet pressure
Minimum and maximum levels of inlet fuel pressure permitted
Consumption HHV
Minimum and maximum heating values permitted
Fuel Type
The type of fuel that the MX unit’s fuel system is designed for
L = Propane; N = Natural Gas
Output Rating @ 40°C
Nominal power output of the MX unit at 40°C (104°F)
Max Unbalanced Load
Maximum unbalanced load
Model Number
Model number of the MX unit (Refer to Model Tree in Figure 3-2)
Serial Number
The unique number assigned to the MX unit for traceability

Global Power Technologies RECOMMENDED MAINTENANCE INTERVALS
303453 Rev1 | MX PrimeGen – Service Manual 7
4RECOMMENDED MAINTENANCE INTERVALS
NOTE:
Oil change interval is dependent on many factors, such as number of engine starts,
gas quality, average engine load, and more. We recommend taking
periodic oil
samples and getting
them analyzed to verify validity of the recommended service
intervals.
4.1 STANDBY OIL CAPACITY SYSTEMS
Table 4-1 - Maintenance Schedule for Standby Oil Capacity Systems
STANDARD SYSTEM
SERVICE RUNTIME
EVERY
2,250
HOURS
EVERY
9,000
HOURS
EVERY
18,000
HOURS
EVERY
27,000
HOURS
Change engine oil
X
Change oil filter
X
Check oil catch can
X
X
X
X
Change spark plugs
X
X
X
Check valve clearance
X
X
X
Change air filter*
*
X
X
X
Change enclosure filter*
*
X
X
X
Change O2 Sensor
X
X
X
Check CCV hoses if free
X
X
X
Check compression
X
X
X
Check water pump (leaks / bearing)
X
X
X
Change coolant**
**
**
X
**
Change water pump
X
Change spark plug wire
X
Change ignition coils
X
Change radial air filter
X
Clean and regrease alternator bearings
X
Check fuel line for leak
X
X
X
X
Clean electrical contacts
X
X
X
Tighten electrical connections
X
X
X
*Check air and enclosure filters every 2,250 hours, change at least every 9,000 hours.
**Check coolant levels every 2,250 hours and top up as required.
Replace coolant at least every 18,000 hours.

Global Power Technologies RECOMMENDED MAINTENANCE INTERVALS
303453 Rev1 | MX PrimeGen – Service Manual 8
4.2 EXTENDED RUNTIME OIL CAPACITY SYSTEMS
Table 4-2 - Maintenance Schedule for Extended Runtime Oil Capacity Systems
EXTENDED-RUN SYSTEM
SERVICE RUNTIME
EVERY
2,250
HOURS
EVERY
9,000
HOURS
EVERY
18,000
HOURS
EVERY
27,000
HOURS
Change engine oil** ** X X X
Change oil filter
X
X
X
Check oil catch can X X X X
Change spark plugs X X X
Check valve clearance X X X
Change air filter* * X X X
Change enclosure filter* * X X X
Change O2 Sensor X X X
Check CCV hoses if free X X X
Check compression X X X
Check water pump (leaks / bearing)
X
X
X
Change coolant** ** ** X **
Change water pump
X
Change spark plug wire X
Change ignition coils X
Change radial air filter X
Clean and regrease alternator bearings X
Check fuel line for leaks X X X X
Clean electrical contacts X X X
Tighten electrical connections
X
X
X
*Check air and enclosure filters every 2,250 hours. Replace at least every 9,000 hours
**Check oil and coolant levels every 2,250 hours and top up as required.
Replace coolant at least every 18,000 hours.

Global Power Technologies RECOMMENDED PARTS FOR SERVICE
303453 Rev1 | MX PrimeGen – Service Manual 9
5RECOMMENDED PARTS FOR SERVICE
5.1 STANDBY OIL CAPACITY SYSTEMS
Table 5-1 - Maintenance Materials for Standby Oil Capacity Systems
SERVICE INTERVAL - STANDBY
QTY
GPT PN
DESCRIPTION
303146 – MX Maintenance Kit:
Standby Run, 2,250 Hours
For every 2,250 hours outside
of 9,000, 18,000, and 27,000
hours
1
302732
FILTER, OIL
4
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
303147 – MX Maintenance Kit:
Standby Run, 9,000 Hours
1
302732
FILTER, OIL
4
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER
303148 – MX Maintenance Kit:
Standby Run, 18,000 Hours
1
302732
FILTER, OIL
4
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG,
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
3
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
303606
PUMP, ASSY, 1” MHB, 24V, TERMINATED
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER
303149 – MX Maintenance Kit:
Standby Run, 27,000 Hours
1
302732
FILTER, OIL
4
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
302737
COIL ASSY, IGNITION
1
302736
CORD SET, RESISTIVE, SPARK PLUG
1
302757
AIR FILTER, SAFETY RADIAL SEAL
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER

Global Power Technologies RECOMMENDED PARTS FOR SERVICE
303453 Rev1 | MX PrimeGen – Service Manual 10
5.2 EXTENDED RUN OIL CAPACITY SYSTEMS
Table 5-2 - Maintenance Materials for Extended Run Oil Capacity Systems
SERVICE INTERVAL - EXTENDED
QTY
GPT PN
DESCRIPTION
303142 – MX Maintenance Kit:
Extended Run, 2,250 Hours
For every 2,250 hours outside
of 9,000, 18,000, and 27,000
hours
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
3003046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3 303045 COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
303143 – MX Maintenance Kit:
Extended Run, 9,000 Hours
1
302732
FILTER, OIL
10
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER
303144 – MX Maintenance Kit:
Extended Run, 18,000 Hours
1
302732
FILTER, OIL
10
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
3
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
303606
PUMP, ASSY, 1” MHB, 24V, TERMINATED
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER
303145 – MX Maintenance Kit:
Extended Run, 27,000 Hours
1
302732
FILTER, OIL
10
303046
OIL, ENGINE, SYNTHETIC, 1 GAL, 15W40
3
302731
SPARK PLUG
1
302733
SENSOR, O2, PRE-CAT EXHAUST, MX
1
302704
FILTER, AIR, 12x12x2, MERV9
1
302756
AIR FILTER, PRIMARY RADIAL SEAL
1
303045
COOLANT, 1 GAL, 60/40 EG, YELLOW VCS
1
302737
COIL ASSY, IGNITION
1
302736
CORD SET, RESISTIVE, SPARK PLUG
1
302757
AIR FILTER, SAFETY RADIAL SEAL
1
303117
GASKET, CYLINDER HEAD COVER
3
302745
WASHER, SEAL, VALVE COVER

Global Power Technologies TOOLS REQUIRED FOR SERVICE
303453 Rev1 | MX PrimeGen – Service Manual 11
6TOOLS REQUIRED FOR SERVICE
The following items are required to perform service and maintenance on the MX Power Generator:
•MX Power Generator Maintenance Log
•Flat blade screwdrivers (from 2 mm to 6 mm)
•Philips screwdriver
•Ratchet with #2 Philips bit (low profile)
•1/4" wrench, socket or nut driver
•5/16" socket or nut driver
•5/16" wrench
•7/16" wrench, socket or nut driver
•2x 9/16" wrenches
•9/16" insulated wrench
•5/8" deep socket with 2” extension
•7/8" wrench
•8 mm socket with short extension
•10 mm wrench
•10 mm crowfoot wrench
•13 mm socket or nut driver
•19 mm socket
•65 mm 14-flute Toyota-compatible oil filter wrench
•Channel locks or crescent wrench capable of opening to 1-11/16"
(for extended runtime systems only)
•Pliers
•Wire stripper/cutter
•4x 22-18AWG butt splices
•Crimper appropriate for butt splices
•Torque wrench capable of 11nm (8 ft-lbs)
•Torque wrench capable of 18nm (13.25 ft-lbs)
•0.008" (0.203 mm) feeler gauge
•0.012" (0.305 mm) feeler gauge
•3/8" hose, 36" length
•1/2" silicone or rubber hose, 1' length minimum
•Catch tray
•26L minimum oil disposal container
•15L coolant disposal container
•24L Volvo coolant VCS pre-mixed – GPT part number 303045
•Jumper wire with alligator clips
•Compression tester with 14 mm thread adapter
•Wire Brush or battery post terminal cleaning tool

Global Power Technologies ARRIVAL ON-SITE
303453 Rev1 | MX PrimeGen – Service Manual 12
7ARRIVAL ON-SITE
Before shutting the system down for maintenance, perform the following checks while the unit is in
operation:
1. Access the electrical panel using a flat blade screwdriver.
2. Inspect the electrical panel and note anything out of the ordinary on the maintenance log.
Some things to look for during this initial inspection are:
a. Are there any alarms based on the indicators on the door?
b. Are there any alarms on the PLC?
c. Are there any breakers tripped?
d. Are there any signs of overheating?
3. Use the 7/16" driver to remove the front panel of the Engine Compartment.
CAUTION!
Do not use power tools to remove or install the side panel fasteners. Do not force
the threads into engaging if they are not going in smoothly.
Apply anti-seize compound when re-installing the fasteners.
CAUTION!
Be careful when removing the panels. Grip both handles firmly. The removeable side
panels weigh approximately 45 lb. (20.5 kg).
4. Inspect Engine Compartment, take note of anything out of the ordinary on the maintenance log.
Things to look for include:
a. Are there any odd noises?
Consider the engine, coolant pump, radiator fans, circulation fans, etc.
b. Are there any noticeable spills or leaks?
5. Make note of the wind shield spacing on the maintenance log.
6. Shut down the system by ramping down the load on the system and then pressing the STOP
button to stop the generator.
CAUTION!
To avoid sudden disturbance to the generator, disconnect the loads gradually —
100 to 0% over a period of 3 minutes. This helps extend the life of the unit.
7. To ensure that the system is in lockout mode for service, set the switches and breakers as follows:
a. LOC/REM: LOC.
b. AUTO/MAN: MAN.
c. LOCAL ON/OFF: OFF.
d. Main System Breaker (Q1) and Battery Charger Breaker (Q2) in engine compartment: OFF.
e. Main DC Control Breakers (Q3 and Q5) inside electrical panel: OFF.
CAUTION!
Before starting maintenance activities, ensure that the system is set as follows:
1. LOC/REM switch is in LOC position
2. AUTO/MAN switch is in MAN position
3. LOCAL ON/OFF switch is in OFF position

Global Power Technologies AIR SYSTEM
303453 Rev1 | MX PrimeGen – Service Manual 13
8AIR SYSTEM
There are two major air systems in the MX Power Generator: the air feeding the engine and the air
circulation in the engine compartment. Both air systems are filtered to keep the system free of foreign
debris. Both enclosure and engine air filters should be periodically inspected every 2,250 hours of
runtime and replaced if clogged.
Figure 8-1 – Engine Air Intake Figure 8-2 – Engine Air Circulation
During each service or maintenance visit, check the air systems as follows:
1. Inspect the engine enclosure filter and clear it of any debris. If dirty or the system’s run time has
exceeded 9,000 hours, replace this enclosure MERV9 air filter (GPT part number 302704).
2. Inspect the engine air intake screen located on the engine air intake elbow and clear it of any
debris.
3. Remove and inspect engine air intake hose for dust build up on inner wall, clean as required.
4. Inspect the primary engine air filter. If dirt is visible, or the system’s run time has exceeded 9,000
hours, replace the primary radial seal air filter (GPT part number 302756).
5. Within the primary air filter is the secondary safety air filter. If the engine run time has exceeded
27,000 hours, then this safety radial seal air filter (GPT Part number 302757) must be replaced.

Global Power Technologies BATTERY SYSTEM
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9BATTERY SYSTEM
9.1 BATTERY INSPECTION
WARNING!
Servicing of batteries are to be performed or supervised by personnel knowledgeable
of batteries and the required precautions.
Keep unauthorized personnel away from batteries.
Figure 9-1 – MX Batteries
During each maintenance and service visit, inspect the battery as follows:
1. Check battery posts for corrosion. Clean any minor corrosion with wire brush or battery terminal
cleaning tool. Severe corrosion may warrant replacement.
2. Measure the voltage of each battery to verify that voltage is between 12.6 and 14.8V.
•If a battery measures below 12.6V, further charging may be required .
•If this minimum voltage cannot be achieved by charging, the battery needs to be replaced.
•If the battery voltage is higher than 14.8V, it also needs replacement.
•Replacement batteries must be Type 31 AGM, 12V, 100-105Ah (GPT part number 70862).
3. Every 9,000 hours of operation, we recommend the battery positions be swapped. This ensures
the batteries stay balanced, as only one position feeds the 12 VDC starting motor. Follow the
steps in the battery replacement Section 9.2, as they are applicable.
4. Ensure terminals are tight and terminal boots are in place.
5. Record left battery voltage on the Maintenance log.

Global Power Technologies BATTERY SYSTEM
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9.2 BATTERY REPLACEMENT
When replacing batteries, use only the batteries
specified:
Type 31 AGM batteries, 12V, 100-105 Ah
These batteries are available to order from GPT. When
ordering replacement batteries, please quote part
number 70862.
To replace or swap batteries, follow these steps:
1. Use a 9/16" insulated wrench to loosen the
battery terminals.
2. Remove wiring from the battery terminals.
3. Remove the wing nut securing the battery clamp
and lift it off.
4. Swap battery positions or replace batteries as necessary.
5. Reinstall the battery clamp. The wingnut should be hand-tightened only; do not use tools or it
may get overtightened.
6. Reinstall the wiring onto the battery terminals.
7. Ensure terminals are tight and terminal boots are in place.
8. Make a note of battery replacements or position swaps within the Maintenance Log.
CAUTION!
To avoid overtightening, do not use tools when tightening the battery clamp wing
nut. Keep them hand tight.
WARNING!
A battery presents a risk of electrical shock and high short-
circuit current. The
following precautions are to be observed when working on batteries:
a. Remove watches, rings, or other metal objects;
b. Use tools with insulated handles;
c. Wear rubber gloves and boots;
d. Do not lay tools or metal parts on top of batteries;
e.
Disconnect charging source prior to connecting or disconnecting battery
terminals; and
f. Determine if the battery is inadvertently grounded. When inadvertently grounded,
remove source of ground. Contact with any part of a grounded battery is capable
of resulting in electrical shock. The risk of such shock is reduced when such grounds
are removed during installation and maintenance.
WARNING!
Do not dispose of battery or batteries in a fire. The battery is capable of exploding.
Do not open or mutilate the batteries. Released electrolyte has been known to be
harmful to the skin and eyes and to be toxic.
Figure 9-2 – MX Battery Clamp

Global Power Technologies OIL SYSTEM
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10 OIL SYSTEM
As shown on the maintenance table above, an oil change needs to be performed on the MX Power
Generator every 2250 hours of run time for systems with a standby oil reservoir or 9000 hours for
systems with extended oil reservoir. It is also important that every 2250 hours the oil catch can is
checked and emptied if full of oil and or water condensate.
Before performing an oil change, make sure that the MX Power Generator is turned off and locked out
and that the fuel supply is closed at the external valve. Refer to Section the MX Manual (302672) for
full shutdown procedure.
Perform an oil change when oil is still warm, but not hot, to allow the oil to drain more efficiently. We
recommend checking the oil system after the air and battery systems have been checked. This should
leave the oil temperature at an appropriate level to allow safe and efficient oil drainage.
NOTE:
Oil change interval is dependent on many factors, such as number of engine starts,
gas quality, average engine load, and more. We recommend that customer take
perio
dic oil samples and get them analyzed to verify validity of the recommended
service intervals.
Figure 10-1 – Standby Oil Configuration