Rigmaster MTS-T4-LGN User manual

Owner's Manual
Model: MTS-T4-LGN

LGN Owner's Manual
Preface
Page 1 LGN-Owners-Manual-071520
Congratulations on your purchase of the
RigMasterAuxiliary Power Unit!
RigMaster is a totally self-contained, stand-alone generator, Air Conditioner and
Heater System. The only items that are shared with your Truck Systems are fuel
and battery supply. The RigMaster unit also trickle charges the Truck batteries
while in operation.
Superior design and performance have been incorporated into this product to
give you trouble-free, economical operation. We are confident you will be
satisfied with your new RigMaster Auxiliary Power Unit.
The following pages contain design features, principles of operation,
preventative maintenance procedures and troubleshooting guides. Please
review it carefully prior to starting and operating your RigMaster Unit. For
safety’s sake, please also heed all safety warnings and advisories found within
your Owner’s Manual.
Should you have any questions or concerns please contact your nearest
authorized RigMaster Power Dealer, or RigMaster Power International Ltd. at:
1-888-208-3101
(For technical support only)
HAVE YOUR SERIAL NUMBERS READY WHEN YOU CALL
To find APU Serial Number: Remove the APU Cover
and look for S/N Plate on bottom right-hand corner of
frame.
Write down your Serial Numbers for future reference:
Engine S/N: ________________________
APU S/N: __________________________

LGN Owner's Manual
Preface
Page 2 LGN-Owners-Manual-071520
Definitions
NOTE
A NOTE describes important information necessary to properly complete a
procedure, or information which will make the procedure easier to understand.
CAUTION
A CAUTION describes a special procedure or special steps which must be
taken while completing a task. Disregarding a CAUTION may result in damage
to the assembly.
WARNING!
A WARNING describes a special procedure or steps, which must be taken
while completing the procedure where the warning is found. Disregarding a
WARNING can result in serious personal injury or death.

LGN Owner's Manual
Preface
Page 3 LGN-Owners-Manual-071520
Additional Publications
“Model LGN APU Service Manual”
“Model LGN APU Installation Manual”
See your Honda Dealer for these other publications:
Honda Engines- Dry Gas V Twin Engines OEM Technical Manual
Honda Engines-GX630_690_Dualfuel
Honda Engines-14043667571_Honda_GX630-660-690-workshop_manual
Licensed dealerships may review and download additional publications by
logging into their Dealer portal.
NOTE
Owner’s Manuals and APU Parts Lists are publicly accessible and
downloadable:
go to www.rigmasterpower.com
hold your cursor over the “customer support tab” and select “support
materials”
On this web page, also note “PARTS LISTS - ALL MODELS AS OF
(DATE)”—this lists all parts ever used in our APU’s. All parts are available to
order.
This Manual is divided into sections by engine and assembly systems, with a section
dedicated to the preventative maintenance of the APU. For detailed information on
installation please refer to the “model LGN APU Installation Manual”. For detailed
information on engine service please refer to either the Honda Service Manual.
Read this entire Manual prior to performing service and maintenance procedures. If you do
not fully understand how to perform a process or procedure or require additional help,
please contact our Technical Support Department before proceeding.
Technical Assistance
Before calling for technical assistance please have ready the following:
1. Current LGN Service Manual
2. Model LGN Serial Number
3. Unit Hour Meter Reading
4. Service & Repair History (if available)
Technical support is available by
Telephone: [phone] or [phone]
Monday to Friday from 8:00 a.m. to 5:00 p.m. Eastern Standard Time
and
Website: www.rigmasterpower.com
(click: Customer Support, Support Materials, Technical Support)

LGN Owner's Manual
Table of Contents
Page 4 LGN-Owners-Manual-071520
Table of Contents
Principles of Operation
Page #
Preface –Additional Publications/Technical Assistance
1
Safety
5
Heater
8
Air Conditioner
9
Pre-Start Inspection
11
Cabin Controller Description and Operating Instructions
12
Clock and Date Set-Up
18
Set Alarm Clock
19
AutoStart Features
20
FAULT CODES
22
Fuel System Description and Bleeding Procedures
27
Preventative Maintenance Schedule
29
Cross Reference Parts List
30
Normal Maintenance & Adjustment Instructions
Oil Change Instructions
31
Air Filter Change Instructions
34
Serpentine Drive Belt –Removal
35
Cleaning Instructions
37
Cleaning –HVAC Filter
38
Troubleshooting
39
Warranty
RigMaster APU Limited Warranty
44
Maintenance Record
50
Notes
51

LGN Owner's Manual
Safety
Page 5 LGN-Owners-Manual-071520
Zero Energy State
NOTE: ZERO ENERGY STATE
To perform service, maintenance and repairs you must disconnect the
RigMaster from its battery source. In the recommended installation
configuration, the RigMaster shares the battery bank with the vehicle's main
engine. Unplug the J1 harness at the power module before disconnecting the
battery cables. After disconnecting the battery cables, check the battery posts
inside the RigMaster engine cabinet to confirm there is no voltage to the
auxiliary power unit (APU).
1. Safety Cover Switch
WARNING! SAFETY COVER SWITCH
It is critical that this safety cover switch is never bypassed; failure to comply
may result in serious injury.
The safety cover switch (Figure
1) is designed to prevent the
RigMaster Power APU from
starting when the engine cover
is loose or has been removed.
When the cover is down, the
switch is in the closed position.
When the cover is open or
loose, the switch is in the open
position. The switch is located
at the very top of the unit
enclosure near to main wire
harness plate.
Figure 1 –Safety Cover Switch
Safety Cover Switch

LGN Owner's Manual
Safety
Page 6 LGN-Owners-Manual-071520
2. AutoStart Automatic Start/Stop Feature
CAUTION: AUTOSTART FEATURE
Remember that a properly functioning RigMaster is capable of starting
independently of its operator. If the AutoStart feature is enabled, battery
voltage, temperature, and time of day can all cause the RigMaster’ engine to
start. Please see the cabin controllers operating instructions for further
information on the AutoStart feature.
You must deactivate this feature prior to refueling.
3. Engine Hoist Points
NOTE: ENGINE HOIST POINTS
The Honda engines have hoist points that are useful for removal and
reinstallation of the engine. It is advised that these hoist points should only be
used if no other means of lifting the unit are available.
4. Starting Aids
WARNING!
Do not use any type of starting aids such as ether. Such use could result in
an explosion and personal injury and will render the APU warranty null and
void.
5. Starting with the Cover Off
CAUTION
Some installation or repair/diagnostic procedures require that the APU is
started with the engine cover off. Do not deactivate or bypass the safety cover
switch. Instead, have another individual assist by manually holding the safety
cover switch down in the closed position for the duration of the procedure.

LGN Owner's Manual
Safety
Page 7 LGN-Owners-Manual-071520
6. Inspection of the Safety Systems
The safety systems on the RigMaster APU should be examined and tested at
prior to performing any service work and at 50-hour intervals to ensure that they
are in good condition and proper working order.
7. Safe Working Practices
Safe working practices are your responsibility. The use of protective safety
equipment is mandatory when performing inspections, service, diagnostics and
repairs on the RigMaster APU. Follow your local regulations and guidelines
regarding occupational health and safety.
8. Contact Us
If you do not fully understand this safety information, contact RigMaster’s
Technical Support Department toll free at (888) 208 –3101 before proceeding
with the operation or service of this APU.

LGN Owner's Manual
Heater
Page 8 LGN-Owners-Manual-071520
Heater: (only applicable if unit has automotive style heating)
The RigMaster heating system is fully automatic. A constant comfort zone is
maintained with the temperature selector (see Cabin Controller Operation –
Page 11). The bunk heating system is a complete stand-alone system that is not
integrated into the vehicle's cooling system. When heat is selected, and the
RigMaster is in operation, the hot coolant flows through the heater core (installed
under the bunk –see Figure 2).
The heater/air conditioner blower motor (fan) circulates the cab air through the
heater core pushing warm air into the bunk area. The coolant is then re-
circulated back to the RigMaster Unit.
This system is designed to maximize the bunk heating efficiency.
Engine
Heat
Recovery
unit
Water
Pump
Radiator
Heater
Core
Red –High Temperature Supply Lines
Blue –Lower Temperature Return Lines
Water
Valve #1
Water
Valve #2
By-pass “ON”
when heat is not
requiredin bunk
By-pass “ON”
when heat is
requiredin bunk
Figure 2 –Heater