Product Manual
Table Of Contents
- Table of Contents
- Safety
- General Information
- Specifications
- Unit Serial Number Locations
- Component Locations
- Control Panel
- Power Zone™ Gen Controller
- Controller Features and Functions
- Operator Screens
- Alarm Mute
- Auto/Manual Mode
- Navigation Buttons
- Control Power Switch
- Engine Start
- Engine Stop/Reset
- The Liquid Crystal Display (LCD)
- Operator Screens
- Home Screen
- Engine Screen
- Generator Screen
- Voltage Adjust Screen
- Maintenance Screens
- Generator Summary
- Engine Tab
- Generator Tab
- Alarms Tab
- Input/Output Tab
- Schedule Tab
- Status Tab
- Generator Monitoring
- Engine Monitoring
- Controller Information Displays, Functions and Reset
- Belt Tensioners
- Operation
- Prestart Checklist
- Manual Starting of the Unit
- Auto (Remote) Starting of the Unit
- Derating for Altitude
- Generator Output Connection Lugs
- Fine Voltage Adjustment
- Voltage Selector Switch
- Voltage Regulation
- Customer Convenience Receptacles
- Main Circuit Breaker
- Exhaust Filter Cleaning Operations
- Transfer Switch
- Auto Exercise Timer
- Shutting Down the Unit
- Emergency Stop Switch
- Idle Switch (MMG25I-45I only)
- Towing the Unit
- Lifting the Unit
- Maintenance
- Emissions Information
- Daily Walk Around Inspection
- General Maintenance
- Basic Maintenance Schedule - Isuzu Engine
- Basic Maintenance Schedule - John Deere Engine
- Isuzu Engine Break-In Requirements
- John Deere Engine Break-In Requirements
- Resetting the Maintenance Alarms
- Checking Generator Drive Plate Torque
- Jack Maintenance
- Trailer Wheel Bearings
- Troubleshooting
- Wiring Diagrams
- AC Wiring - MMG25IF4, MMG45IF4
- AC Wiring - MMG35DF4, MMG55DF4
- AC Wiring - 4 Pos. Voltage Selector Switch Option - MMG25IF4, MMG45IF4
- AC Wiring - 4 Pos. Voltage Selector Switch Option - MMG35DF4, MMG55DF4
- AC Wiring Option - Standard Receptacles
- AC Wiring Option - Engine Heater
- AC Wiring Option - Buck Transformer
- AC Wiring Option - PMG
- DC Wiring
- Trailer Lights Wiring
- Wiring Harness - Electric Brake Option
- DC Wiring Option - 12V Battery Charger
- DC Wiring Option - Low Oil Level
- Options & Accessories
36949 B MMG25I-35D-45I-55DF4 Operating Manual 1
Section 1 - Safety
SAFETY NOTES
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible injury or death.
This manual contains DANGERS, WARNINGS, CAUTIONS, NOTICES and NOTES which must be
followed to prevent the possibility of improper service, damage to the equipment, personal injury or death.
The following formatting options will apply when calling the readers attention to the DANGERS, WARN-
INGS, CAUTIONS, NOTICES and NOTES.
DANGER
INDICATES A HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL RESULT IN
DEATH OR SERIOUS INJURY.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Indicates a hazardous situation which, if not avoided, could result in property or equipment
damage.
Note: Notes contain additional information important to a procedure and will be found within the regular text body
of this manual.
OPERATING SAFETY
Before using the unit, be sure you read and understand all of the instructions. This equipment was
designed for specific applications; DO NOT modify or use this equipment for any application other than
which it was designed for. Equipment operated improperly or by untrained personnel can be dangerous.
Read the operating instructions and familiarize yourself with the location and proper use of all instruments
and controls. Inexperienced operators should receive instruction from someone familiar with the equipment
before being allowed to operate or set up the unit. The following points should be practiced at all times:
• The area immediately surrounding the unit should be dry, clean, and free of debris.
• Position and operate the unit on a firm, level surface.
• DO NOT start a unit in need of repair.
• If the unit is equipped with a frame grounding stud, follow any local, state, and National Electrical
Code (NEC) guidelines when connecting.
• DO NOT operate the unit on a combustible surface.
• DO NOT operate a unit while tired, distracted, or under the influence of drugs or alcohol.
• Keep all body parts, clothing and other loose items away from moving parts.
• DO NOT fill fuel tank near an open flame, while smoking, or while engine is running. DO NOT fill tank
in an enclosed area with poor ventilation.
• DO NOT operate with the fuel tank cap loose or missing.
• Shut the engine down if any of the following conditions exist during operation:










