Generac Mobile MFH900, Owner'S Manual

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Owner’s Manual for Flameless Air Heater iii
Table of Contents
Section 1: Introduction and Safety
Introduction ..................................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .................................................................1
How to Obtain Service .................................................1
General Hazards ...........................................................2
Explosion and Fire Hazards ........................................2
Trailer Hazards .............................................................3
Battery Hazards ............................................................3
Service Safety ..............................................................3
Towing Safety ...............................................................3
Hitch and Coupling ......................................................4
Running Lights ............................................................4
Safe Towing Techniques .............................................4
Reporting Trailer Safety Defects ................................4
Section 2: General Information
Specifications ...............................................................5
Unit Dimensions ...........................................................6
Unit Serial Number Locations .....................................6
Component Locations .................................................7
Exterior ........................................................................7
Interior .........................................................................8
Control Panel ..............................................................10
Controller ....................................................................11
Controller Display: Alert (Icon) Definitions .................12
Controller Faceplate Icons ........................................13
Emissions Information ..............................................14
Engine Oil Recommendations ..................................14
Coolant Recommendation ........................................14
Fuel System ................................................................14
Hydraulic Oil ...............................................................15
Trailer Towing Guidelines .........................................15
Wheel Chock Guidelines ...........................................15
Rooftop Beacon .........................................................15
Home Page (Default Operator Display) ....................15
Controller Mode .........................................................16
Controller Monitoring, Diagnostic, and
Protective Features ....................................................17
Advanced Controller Functions .................................19
Section 3: Operation
Before Starting Engine ..............................................21
Pre-start Checklist .....................................................21
Engine Oil Check .......................................................21
Hydraulic Oil Check ...................................................21
Engine Coolant Check ...............................................21
Battery Check ............................................................21
Starting Engine and Heater .......................................22
Adjusting Air Output Temperature ...........................22
Adjusting Heater CFM ...............................................22
Changing Controller Mode ........................................23
Shutting Down Engine and Heater ...........................23
Emergency Stop Switch ............................................23
Battery Disconnect Switch ........................................23
Before Towing Unit ....................................................23
Section 4: Maintenance
Maintenance Tasks ....................................................25
Daily Walk Around Inspection ...................................25
Checking Engine Oil Level ........................................25
Draining Fluids—Union Fluid Drain ...........................26
Adding Coolant ..........................................................26
Removing Crankcase Filter .......................................27
Engine Diagnostic Port and ECM ..............................27
Maintenance Schedule ..............................................28
Engine Maintenance Schedule ..................................28
Hydraulic Oil Schedule ..............................................29
Hydraulic Oil Filters Schedule ...................................29
Accessing and Resetting Controller
Service Intervals ........................................................29
Other Maintenance Checks .......................................30
Section 5: Troubleshooting
General Troubleshooting Guide ...............................31
Controller Warnings and Faults ...............................34
Section 6: Wiring Diagrams
Main Control System .................................................37
Perkins Engine Aftertreatment .................................38
J1939 CAN Bus Network ...........................................39
Trailer Harness—Electric Brakes .............................40
Trailer Harness—Lights Only or With
Surge Brakes ..............................................................41
Hydraulic Circuit ........................................................43