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
General Information
36949 B MMG25I-35D-45I-55DF4 Operating Manual 15
Auto/Manual Mode
The Auto/Manual Mode ( ) button is used to change the startup and shutdown modes of the unit. When pressed
once, the unit enters Manual mode and when pressed and held for five seconds, the unit enters Auto mode. If in
Auto mode, pressing once will return the unit to Manual mode.
Navigation Buttons
These buttons are used to navigate and interact with the Power Zone™ controller screens. Pressing any directional
arrow (▲, ►, ▼, ◄) while on any of the operator screens will open the maintenance screens, and navigate the tabs
and pages within the maintenance screens. The Enter () button is used to select menus, confirm alarms, and
confirm altered settings.
Control Power Switch
Use this switch to start up and shut down the Power Zone™ controller. This switch should not be turned off when
the unit is running.
Engine Start
Pressing the Engine Start (I) button while the controller is in Manual mode will start the unit, provided there are no
shutdown errors, and the engine satisfies the start status. If the controller is in Auto mode, the Engine Start (I) button
has no effect.
Engine Stop/Reset
Pressing the Engine Stop/Reset (O) button will shut down the unit and put the controller into Stop mode, whether in
Manual mode or Auto mode.
CAUTION
In case of an emergency, press the emergency stop switch, located on the side of the unit,
to stop the engine immediately. The Engine Stop/Reset (O) button may delay the engine
shutdown if stop faults exist.
To prevent damage to the generator and connected equipment, remove all loads from the
generator by opening all circuit breakers (turn OFF (O)) before pressing the Engine Stop/
Reset (O) button.
The Liquid Crystal Display (LCD)
This window will display the various operator and maintenance screens. By viewing these screens, the operator will
be able to monitor both the engine and generator status while the unit is running.
Operator Screens
The operator screens display the most relevant and critical information an operator will need to properly configure
and utilize a unit. From these four screens, the operator can access engine, generator and power transmission
information necessary to operate the unit under normal conditions.
Home Screen
The Home screen is the default screen of the controller and will display after the controller is powered up and the
unit management software is loaded. It displays a live readout of the kW meter, percent of load used (gauge), selected
phase, volts and amps being produced by the generator, and the fuel level with time until empty. The controller will
automatically return to this screen from any other screen after a period of inactivity.