Generac Power Systems MDG25IF4, Owner'S Manual

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Owner’s Manual for Mobile Generator iii
Table of Contents
Section 1: Introduction and Safety
Introduction ..................................................................1
Read This Manual Thoroughly ....................................1
How to Obtain Service .................................................1
Safety Rules .................................................................1
Safety Symbols and Meanings ...................................1
General Hazards ...........................................................2
Trailer Hazards .............................................................2
Electrical Hazards ........................................................3
Battery Hazards ............................................................4
Fuel Hazards .................................................................4
Engine Safety ...............................................................4
Operating Safety ..........................................................5
Positioning the Unit .....................................................5
Towing Safety ...............................................................5
Hitch and Coupling ......................................................5
Safe Towing Techniques .............................................5
Reporting Trailer Safety Defects ................................5
Safety and Operating Decals ......................................6
Section 2: General Information
Specifications .............................................................11
Unit Dimensions .........................................................12
Unit and Serial Number Locations ...........................13
Altitude and Temperature Limitations .....................13
Component Locations ...............................................14
Exterior ......................................................................14
Interior .......................................................................15
Connection Panel .......................................................16
Receptacle Panel .......................................................17
Control Panel ..............................................................18
Genset Controller .......................................................19
Controller Modes .......................................................21
Operator Pages .........................................................21
Maintenance Alarms ..................................................23
Voltage Selector Switch ............................................24
Lockout Function .......................................................24
Section 3: Operation
Pre-start Checklist .....................................................25
Manually Starting the Unit .........................................25
AUTO (Remote) Starting the Unit .............................26
Wet Stacking ..............................................................26
Low Idle Switch ..........................................................27
Cold Weather Operation ............................................27
Using a Booster Battery or Charger (if equipped) ..28
Parallel: .....................................................................28
Generator Output Connections ................................28
Generator Cam Lock Connections (If Equipped) ....29
Using the Voltage Selector Switch ...........................29
Fine Voltage Adjustment ...........................................30
Voltage Regulator ......................................................30
Customer Convenience Receptacles .......................30
Main Circuit Breaker ..................................................30
Transfer Switch ..........................................................31
Alternate Load Device (ALD) ....................................32
Changing Exercise Timers ........................................32
Shutting Down the Unit .............................................32
Emergency Stop Switch ............................................32
Using the ECU Override Switch ................................33
Positive Air Shutoff (PAS) Valves ............................33
PAS Test Procedure ..................................................33
Towing the Unit ..........................................................34
Lifting the Unit ............................................................34
Section 4: Maintenance
Emissions Information ..............................................37
Maintenance ...............................................................37
Daily Walk Around Inspection ..................................37
Belt Tensioners ..........................................................37
General Maintenance .................................................37
Engine Oil Recommendations ..................................38
Coolant Recommendation ........................................38
Basic Maintenance Schedule ....................................38
Engine Break-In Requirements .................................39
Checking Generator Drive Plate Torque ..................39
ALD System Maintenance .........................................39
Resetting Maintenance Alarms .................................40
Jack Maintenance ......................................................40
Side-Wind Models .....................................................40
Top-Wind Models ......................................................40
Trailer Wheel Bearings ..............................................40