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
Operation
34 MMG25I-35D-45I-55DF4 Operating Manual 36949 B
3. Push (O). Pressing the red Engine Stop/Reset (O) button will result in the generator going into the shutdown
cycle and starting a 15 second shutdown timer called stopping. If the unit does not shut down within 15 sec-
onds, a stop fail alarm will be displayed on the LCD window.
4. After the unit shuts down, move the Control Power switch to OFF (O).
Note: For extended storage time, disconnect the battery. See the engine operator’s manual for extended storage
requirements.
EMERGENCY STOP SWITCH
The unit is equipped with one emergency stop switch. For location of the emergency
stop switch, refer to Component Locations. The red button is clearly labeled
“EMERGENCY STOP.” The switch can be accessed and activated with all doors closed
and locked.
Activate the emergency stop switch by pushing it in until it locks down. This will trip
the main circuit breaker which will open the contact, disconnecting the load to the
connection lugs. This will also open the fuel circuit, shutting down the engine. The
emergency stop fault will be displayed on the control panel. The switch will remain
locked until it is pulled out.
Figure 3-10. Emergency
Stop Switch
CAUTION
Equipment Damage. The emergency stop switch is not to be used to power down the unit
under normal operating circumstances. Doing so will result in equipment damage. (000246)
IDLE SWITCH (MMG25I-45I ONLY)
The idle speed is 1000 rpm. The engine will start at idle speed and run at idle for 15 seconds no matter what position
the idle switch is in. After 15 seconds of running at idle, the unit will ramp up to 1800 rpm if the idle switch is off.
Otherwise the unit will continue to idle if the idle switch is on.
When the engine is at idle speed (1000 rpm), the voltage regulator will not function and the output voltage is dropped
out by the voltage regulator.
Note: Avoid long periods of idling as it may cause rapid wear to the engine.
Do not apply a load to the unit when the engine is running at idle speed or equipment damage
could result.
TOWING THE UNIT
Once the engine is shut down, follow these steps to prepare the unit for towing.
1. Use the tongue jack to raise or lower the trailer onto the hitch of the towing vehicle. Lock the hitch coupling
and attach the safety chains or cables to the vehicle. Release the jack locking pin and rotate the jack into the
travel position. Make sure the locking pin snaps into place.
Note: A film of grease on the coupler will extend coupler life and eliminate squeaking. Wipe the coupler clean and
apply fresh grease each time the unit is towed.
2. See Jack Maintenance for proper operation and maintenance of the jacks. For maintenance interval infor-
mation, see Maintenance.
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