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

LGN Owner's Manual
Air Conditioner
Page 9 LGN-Owners-Manual-071520
Air Conditioner
The RigMaster air conditioner is also fully automatic. A constant comfort zone is
maintained with the temperature selector setting (see Cabin Controller Operation
–Page 11). The RigMaster air conditioner is an R134A system that is not
integrated into the vehicle's existing air conditioning system.
WARNING!
ONLY CERTIFIED AIR CONDITIONING TECHNICIANS SHOULD SERVICE
THE AIR CONDITIONER.
HIGH PRESSURE VS. TEMPERATURE READINGS
High temperatures and pressures are approximate.
Readings within 10-15% of Figure 3 will deliver acceptable performance.
Air Conditioning Performance
Figure 3 –A/C Performance
SUCTION PRESSURES –LOW SIDE
Usual low side pressure 15-40 PSI depending on outside temperature and
humidity.
DISCHARGE PRESSURES –HIGH SIDE
Usual high side pressure 150-300+ PSI depending on outside temperature
and humidity.
AIR CONDITIONING
SPECIFICATIONS
Refrigerant Type
R134a
Volume of Refrigerant - Single Blower (20,000 BTU
HVAC)
0.65 lbs.; (10.4 oz.; 0.29 Kg.)
Volume of Refrigerant - Dual Blower (24,000 BTU HVAC)
1.0 lb.; (16 oz.; 0.4 Kg.)
Compressor Oil Type
SP46 PAG Compressor Oil
Compressor Oil Capacity (already filled with
3.3 oz.; add an extra 3 oz. at time of charging)
6.3 fl. oz.; (186.3 cc.; 186.3 mL.)
Evaporator Temperature Switch
Range = 30°F to 42°F (-1°C to 7°C)
Binary Pressure Switch
Range = 28 to 450 psi

LGN Owner's Manual
Air Conditioner
Page 10 LGN-Owners-Manual-071520
The compressor within the RigMaster unit pumps the refrigerant gas through the
condenser that dissipates the heat and changes the refrigerant from a gas to a
liquid. The liquid refrigerant passes through a filter (receiver dryer), and then
through the evaporator core located in the bunk heater/air conditioner unit. The
heater/air conditioner blower motor (fan) then activates, and cool dry air is forced
into the bunk area.
Figure 4 –Air Conditioner
LEGEND
PRESSURE
PART #
A
Condenser
High
LG9-001
B
Compressor
High/Low
LG9-004
C
Receiver Drier
High
LG9-007
D
Evaporator
High
LG9-002-
01
E
Thermostatic Switch
High/Low
RP9-113
F
Bulkhead Section of Frame
N/A
LG10-001
G
A/C Line –Compressor to Condenser –#8
High
LG9-400
H
A/C Line –Condenser to Bulkhead –#6
High
LG9-402
I
A/C Line –Bulkhead to Evaporator
High
LG9-404
J
A/C Line –Evaporator to Bulkhead
Low
LG9-403
K
A/C Line –Bulkhead to Compressor - #10
rrrrr#10##10
Low
LG9-401
L
Expansion Valve
High/Low
LG9-003

LGN Owner's Manual
Pre Start Inspection
Page 11 LGN-Owners-Manual-071520
Pre-Start Inspection
with the RigMaster TURNED OFF
1. Remove the cover.
2. Visually inspect the unit for evidence of oil or coolant leakage.
3. Check the oil and add oil if necessary.
4. Check the tension and wear of all belts.
5. Check the mounting bolts and tighten if necessary.
6. Check for broken, corroded, or loose connectors and/or wires.
7. Check the physical condition and tightness of all hoses and hose clamps.
8. Replace and secure the cover.

LGN Owner's Manual
Cabin Controller
Page 12 LGN-Owners-Manual-071520
Cabin Controller Operating Instructions
Before beginning the start-up procedure, it is necessary to know how to operate
the cabin controller.
Figure 5 –Cabin Controller
Controls
The Cabin Controller consists of two sections:
1. LCD (Liquid Crystal Display) with basic control buttons.
2. Advanced control buttons.
The LCD and basic control buttons are always visible to the user.
The advanced control buttons are concealed behind semi-circular cover.
The controller also contains a LED indicator. When the LED is green, the system
is active; if it glows red then the system is detecting a problem and an error
message will scroll across the bottom of the LCD screen. The LED is turned off
in low power mode.
1. Basic Controls and Functions
Basic controls contain the following buttons:
1. Start system.
2. Stop system.
3. Up arrow (Red triangular button).
4. Down arrow (Blue triangular button).

LGN Owner's Manual
Cabin Controller
Page 13 LGN-Owners-Manual-071520
If the unit is in advanced mode, pressing any of the basic control buttons will
return the unit to basic mode. Alternately, the control panel will return to basic
mode after two minutes of inactivity.
If the unit shows the current temperature, pressing either the up or down button
will show the set point temperature without changing it. Once the set point is
indicated, pressing up or down buttons will adjust the set point. The new set
point takes effect only when display is returned to show internal temperature.
2. Advanced Controls and Functions
The advanced controls are as follows:
1. Power button controls whether the module is active. In inactive mode all
system functions including engine start, climate control and AutoStart are
disabled. You can still see the temperature reading, current time and use
the alarm clock function.
2. Fan button is used to change fan setting. Pressing the button cycles
between auto, high, med, low, and off settings.
3. Clear button will take you back to the main screen without saving any
information.
4. Clock button is used to set the time/date/day menu features.
5. Alarm button is used to set the alarm menu features.
6. AutoStart button is used to access and set AutoStart menu features.
7. Mode button is used to activate the different operational modes. Pressing
the mode button will back you out of a menu mode but does not save the
information just entered.
8. Ext. Temp button will display the external temperature on the LCD when
pressed.
9. Oprtg. Hours button will display the total hours of use.
10. Select button enters the data and advances the program to the next menu
step. Pressing the select button will save the information when entering
operational data.
11. Left scroll button ().
12. Right scroll button ().
The left and right arrow buttons are used to locate the desired data and/or adjust
those values.

LGN Owner's Manual
Cabin Controller
Page 14 LGN-Owners-Manual-071520
Cabin Controller LCD Display
The Cabin Controller LCD has a white backlight that turns on each time a user
presses a button and will remain on for 2 minutes after the last button has been
pushed. The backlight will turn red when there is an alarm condition. A fault
code will be displayed if the unit shuts down or fails to start.
The LCD displays 4 groups of information:
1. System information.
2. Temperature information.
3. Clock, day and alarm information.
4. Alphanumeric display for additional information.
1. System Information:
Figure 6 –Cabin Controller LCD Display –Controls
SYSTEM ALARM symbol will flash if an alarm condition has occurred. The
alphanumeric display along the bottom of the display screen will show more
information about the alarm. (Red status LED will be on.)
SYSTEM ON symbol will display if the unit is in ON mode. (Green status LED will
be on.)
ENGINE RUNNING symbol will display when the engine is running.
AUTOSTART symbol will display and flash if temperature AutoStart is enabled
(when engine is off). If the engine has been started through AutoStart, this
symbol is constantly on while the engine is running.
HEATING symbol will display when the system is in heating mode.
COOLING symbol will display when the system is in cooling mode.
FAN AUTO, FAN HIGH, FAN MED, or FAN LOW symbol will display depending
on which setting has been selected. Nothing will display in this area if the fan is
set to off.

LGN Owner's Manual
Cabin Controller
Page 15 LGN-Owners-Manual-071520
2. Temperature Information:
Figure 7 –Cabin Controller LCD Display –Temperature
This area indicates the internal (or external) temperature and can be
programmed to display in either “Celsius” or “Fahrenheit”.
Internal temperature is shown if EXT TEMP and SET TEMP symbols are not
illuminated. Pressing the Ext. Temp button will momentarily display the outside
temperature. After 5 seconds, the display will default back to showing the internal
temperature.
EXT TEMP symbol will flash when showing external temperature. After a few
seconds the display returns to show internal temperature.
SET TEMP symbol appears (and the numeric temperature value will flash)
whenever adjusting temperature set point. A few seconds after adjusting the
temperature, the display returns to show internal temperature.

LGN Owner's Manual
Cabin Controller
Page 16 LGN-Owners-Manual-071520
3. Clock and Alarm:
Figure 8 –Cabin Controller LCD Display –Clock & Alarm
This is a 12:00 hour clock system with AM/PM symbols and 7 symbols indicating
day of the week: MO, TU, WE, TH, FR, SA, SU.
CLOCK symbol appears when the current time is showing.
ALARM symbol appears to indicate that the alarm setting is showing. Pressing
the alarm button allows you to set the alarm. The alarm symbol flashes when the
alarm has been set.
TIME AUTOSTART symbol appears if the display shows time AutoStart setting.
It flashes if Time AutoStart is set.
4. Additional Information/Message Area:
Figure 9 –Cabin Controller LCD Display –Message Area
This line is used to show extra information in the basic mode; error messages to
provide interface when going through menus in advanced mode. Longer text
lines are scrolled to the left on the display.

LGN Owner's Manual
Cabin Controller
Page 17 LGN-Owners-Manual-071520
Operation of the Cabin Controller (Functions)
To Turn Power On
Press the POWER button to activate the system. When the power switch is
activated the LCD display will light and SYSTEM ON symbol will turn on (active
mode). Press POWER button again for 2 seconds to switch the unit back to low
power mode.
Engine Start
Press START button.
The control panel will display the status of the operation as it occurs: Glow Plug
and a countdown will display on the screen. Once the countdown is complete
the display will read Cranking as the APU starts up and the ENGINE RUNNING
symbol will blink. Once started the control will display Engine Running for 5
seconds (and ENGINE RUNNING symbol will turn on).
Engine Stop
Press STOP button.
The screen will initially display Stopping and then change to Stopped once the
operation is complete. The Engine Running symbol will turn off.
Temperature Control
Press UP or DOWN (red/blue) buttons to adjust temperature set point on the
display. When editing the set point, the LCD display will show the set point
instead of internal cabin temperature. The set point is stored without a need to
press any other buttons.
NOTE
The manual temperature control ranges from 59ºF to 90ºF (15ºC to 32ºC).
The system will remember the last set temperature when the APU is turned
on. If the system is already running, the change will take effect a few seconds
after the last UP or DOWN key is pressed, and the display will switch back
from set point to internal cabin temperature.

LGN Owner's Manual
Cabin Controller
Page 18 LGN-Owners-Manual-071520
Clock and Date Set-Up
It is necessary to enter the time and date programming mode if the module has
never been programmed or a different time zone is required. (SET symbol is
flashing, and CLOCK symbol is turned on during clock setup).
1. Press CLOCK button. (The display will read Set Clock.)
2. Press SELECT button to continue, MODE to exit. (Clock hour will start
flashing.)
3. Press LEFT or RIGHT scroll button to adjust Clock hour.
4. Press SELECT button. (Clock hour will stop flashing and Clock minutes will
start flashing.)
5. Press LEFT or RIGHT scroll button to adjust Clock minutes.
6. Press SELECT button. (Clock minutes will stop flashing and AM/PM will
start flashing.)
7. Press LEFT or RIGHT scroll button to change.
8. Press SELECT button. (AM/PM will stop flashing and Day of week will start
flashing.)
9. Press LEFT or RIGHT scroll button to change.
10. Press SELECT button. (Day of week will stop flashing and Month will start
flashing.)
11. Press LEFT or RIGHT scroll button to change.
12. Press SELECT button. (Month will stop flashing and Date will start flashing.)
13. Press LEFT or RIGHT scroll button to change.
14. Press SELECT button to save settings and return to menu or press MODE
to return to menu without saving.