Magnum MMG 125 User Manual

230
www m-p-llc com
DIESEL GENERATORS
MMG 125 • MMG 155
MMG 180 • MMG 230
OPERATING MANUAL

Magnum MMG 125 Specifications

General

Input Voltage	12 VDC
Output Voltage	120 VAC
Frequency	60 Hz
Waveform	Modified Sine Wave
Protection	Overload, Over Temperature, Short Circuit

Summary

INTRODUCTION

SAFETY GUIDELINES

OPERATING SAFETY

Guidelines for safe operation of the generator, including environmental and equipment checks.

ENGINE SAFETY

ELECTRICAL SAFETY

TOWING SAFETY

TRAILER SAFETY DEFECTS REPORTING

UNIT SERIAL NUMBER LOCATIONS

SAFETY SYMBOL SUMMARY

SPECIFICATIONS

UNIT DIMENSIONS

SERVICE LOCATIONS

MAIN CONTROL PANEL FEATURES

MAGNUM DIGITAL CONTROLLER (MDC)

MDC Panel Overview and Operation

Details on the MDC's toggle switch, voltage adjustment, operation keypad, and LCD window.

GENERATOR MONITORING

ENGINE MONITORING

MDC Screen Navigation

Instructions for navigating the MDC display screens like Running, Password, and History.

FINE VOLTAGE ADJUSTMENT

GENERATOR START UP PROCEDURES

PRE-START CHECK LIST

A comprehensive checklist to perform before starting the generator.

MANUAL START PROCEDURE

Step-by-step instructions for starting the generator manually.

REMOTE STARTING AND SHUTDOWN

MDC INFORMATION AND STATUS

MDC Generator Operational Status Codes

Codes and descriptions for the generator's operational states.

MDC Alarm Management

Explanation of alarm types and their meanings within the MDC controller.

MDC POSSIBLE ALARMS AND DESCRIPTIONS

JOHN DEERE ECU INFORMATION

MDC HISTORY AND BACKLIGHTING

ADJUSTING DISPLAY BACKLIGHTING

Procedure for adjusting the brightness and contrast of the MDC display.

RESETTING SERVICE REMINDER

TROUBLESHOOTING SHUTDOWN CONDITIONS

LOW FUEL LEVEL SHUTDOWN

Troubleshooting steps for automatic shutdown due to low fuel level.

LOW OIL PRESSURE SHUTDOWN

Troubleshooting steps for automatic shutdown due to low oil pressure.

LOW COOLANT LEVEL SHUTDOWN

Troubleshooting steps for automatic shutdown due to low coolant level.

SPECIFIC SHUTDOWN CONDITIONS

GENERATOR OUTPUT CONNECTION LUGS

VOLTAGE SELECTOR SWITCH (MMG 125-155-180)

4-POSITION VOLTAGE SELECTOR SWITCH

CHANGING OUTPUT VOLTAGE (MMG 230)

EMERGENCY STOP SWITCH

MAIN CIRCUIT BREAKER

VOLTAGE REGULATION

CUSTOMER CONVENIENCE OUTLETS

DERATING FOR ALTITUDE

REMOTE START TERMINAL BLOCK

ENGINE AND GENERATOR MAINTENANCE

ENGINE BREAK-IN REQUIREMENTS

DAILY MAINTENANCE CHECKS

LIFTING THE GENERATOR

TOWING THE TRAILER

TRAILER WHEEL BEARINGS

AC WIRING DIAGRAMS (MMG 125-180)

DC WIRING DIAGRAMS (MMG 125-180)

AC WIRING DIAGRAM (Optional 4-Pos Switch)

AC WIRING DIAGRAM MMG230 (Optional 4-Pos Switch)

TRAILER LIGHTS WIRING DIAGRAM

NOTES

SERVICE LOG