
Table of Contents
QUIETPACT™ 75D Recreational Vehicle Generator
Part I – Owner’s Manual
| Introduction | Inside Front Cover | |
| Read This Manual Thoroughly | IFC | |
| Contents | IFC | |
| Operation and Maintenance | IFC | |
| How to Obtain Service | IFC | |
| Authorized Service Dealer Locator Number | ....................IFC | |
| Safety Rules | ...................................................................... | 2 | |
| Section 1 – General Information | 4 | ||
| 1.1 | Generator Identification | 4 | |
| 1.2 | Generator Applicability | 5 | |
| 1.3 | Safety | 5 | |
| 1.4 | Generator AC Connection System | 5 | |
| 1.5 | Specifications | 5 | |
| 
 | 1.5.1 | Fuel Requirements | 5 | 
| 
 | 1.5.2 | Fuel Consumption | 6 | 
| 
 | 1.5.3 | Engine Oil Requirements | 6 | 
| 
 | 1.5.4 | Coolant | 6 | 
| 
 | 1.5.5 | Engine | 6 | 
| 
 | 1.5.6 | Generator | 6 | 
| Section 2 – Operation | 7 | ||
| 2.1 | Generator Control Panel | 7 | |
| 
 | 2.1.1 | Hourmeter | 7 | 
| 
 | 2.1.2 | Start/Stop Switch | 7 | 
| 
 | 2.1.3 | Fuse | 7 | 
| 
 | 2.1.4 | Line Breaker | 7 | 
| 
 | 2.1.5 | Preheat Switch | 7 | 
| 2.2 | Optional Remote Start/Stop | 7 | |
| 2.3 | Before Starting the Engine | 7 | |
| 
 | 2.3.1 | Installation | 7 | 
| 
 | 2.3.2 | Engine Lubrication | 8 | 
| 
 | 2.3.3 | Fuel Supply | 8 | 
| 
 | 2.3.4 | Coolant Level | 8 | 
| 
 | 2.3.5 | Cooling and Ventilating Air | 8 | 
| 
 | 2.3.6 | Engine Exhaust Gas | 8 | 
| 2.4 | Starting the Generator | 8 | |
| 2.5 | Stopping the Generator | 9 | |
| 2.6 | Applying Loads to Generator | 9 | |
| 
 | 2.6.1 Letting the Engine Stabilize | 9 | |
| 
 | 2.6.2 Do Not Overload the Generator | 9 | |
| 2.7 | Protection Systems | 9 | |
| 
 | 2.7.1 Low Oil Pressure Switch | 9 | |
| 
 | 2.7.2 High Coolant Temperature Switch | 9 | |
| 
 | 2.7.3 | Overspeed Shutdown | 10 | 
| 
 | 2.7.4 | Overvoltage Protection | 10 | 
| 2.8 | Additional Information | 10 | |
| 
 | 2.8.1 | 10 | |
| 
 | 2.8.2 | 10 | |
| 
 | 2.8.3 Attention Required After Submersion | 10 | |
| 
 | 2.8.4 Operation in High Grass or Brush | 11 | |
| 
 | 2.8.5 Effects of Moisture and Dirt | 11 | |
| Section 3 – Maintenance | 11 | ||
| 3.1 | Checking the Engine Oil Level | 11 | |
| 3.2 | Changing the Engine Oil and/or Oil Filter | 11 | |
| 3.3 | Servicing the Engine Air Filter | 12 | |
| 3.4 | Spark Arrestor Muffler | 12 | |
| 3.5 | Cleaning the Generator | 13 | |
| 3.6 | Battery Maintenance | 13 | |
| 3.7 | Cooling System | 14 | |
| 3.8 | Engine Coolant | 14 | |
| 3.9 | Major Service Manual | 14 | |
| 3.10 | Drive Belt | 14 | |
| 3.11 | Exercising the Generator | 14 | |
| 3.12 | 15 | ||
| 
 | 3.12.1 | Removal From Service | 15 | 
| 
 | 3.12.2 | Return to Service | 15 | 
| 3.13 | Service Schedule | 16 | |
Part II – Installation Instructions
| Safety Rules | 18 | ||
| Section 1 – General Information | 20 | ||
| 1.1 | Purpose and Scope of the Manual | 20 | |
| 1.2 | Safety | ...................................................................... | 20 | 
| 1.3 | Standards Booklets | 20 | |
| 1.4 | Equipment Description | 20 | |
| 1.5 | Generator Engine Operating Speed | 20 | |
| 1.6 | Generator AC Connection System | 20 | |
| Section 2 – Installation | 22 | ||
| 2.1 | Location and Support | 22 | |
| 
 | 2.1.1 | Generator Location | 22 | 
| 
 | 2.1.2 | Generator Support | 22 | 
| 
 | 2.1.3 | Suspended Mounting | 22 | 
| 
 | 2.1.4 | Generator Restraint | 23 | 
| 2.2 | Generator Compartments | 23 | |
| 
 | 2.2.1 | Compartment Construction | 23 | 
| 
 | 2.2.2 | Sound Insulating Materials | 24 | 
| 
 | 2.2.3 | Acoustics | 24 | 
| 
 | 2.2.4 | Compartment Floor Cutouts | 25 | 
| 2.3 | Cooling and Ventilating Air | 26 | |
| 
 | 2.3.1 | Generator Airflow | 26 | 
| 
 | 2.3.2 Cooling Air Inlet Openings | 26 | |
| 
 | 2.3.3 | Compensating for Restrictions | 27 | 
| 
 | 2.3.4 | Testing the Installation | 27 | 
| 2.4 | Diesel Fuel System | 27 | |
| 
 | 2.4.1 | Fuel Tank | 28 | 
| 
 | 2.4.2 Generator Fuel Supply Lines | 28 | |
| 
 | 2.4.3 Generator Fuel Return Lines | 28 | |
| 2.5 | Exhaust System | 29 | |
| 
 | 2.5.1 Muffler and Spark Arrestor | 29 | |
| 
 | 2.5.2 | Exhaust System Safety | 29 | 
| 2.6 | Electrical Connections | 30 | |
| 
 | 2.6.1 | Electrical Junction Box | 30 | 
| 
 | 2.6.2 | Wiring | 30 | 
| 
 | 2.6.3 | Generator AC Connections | 30 | 
| 
 | 2.6.4 | Conduit | 32 | 
| 
 | 2.6.5 | Power Supply Cord | 32 | 
| 
 | 2.6.6 Ground Fault Circuit Interrupters | 32 | |
| 
 | 2.6.7 Isolating Different Power Sources | 32 | |
| 2.7 | Battery Installation | 33 | |
| 
 | 2.7.1 | Recommended Battery | 33 | 
| 
 | 2.7.2 | Battery Cables | 33 | 
| 
 | 2.7.3 | Battery Cable Connections | 33 | 
| 
 | 2.7.4 | Battery Compartment | 34 | 
| 2.8 | Optional Accessories | 34 | |
| 
 | 2.8.1 | Remote Start/Stop Connections | 34 | 
| Section 3 –  | 35 | ||
| 
 | 
 | Checks | |
| 3.1 | Post Installation Tests | 35 | |
| 3.2 | Before Initial Startup | 35 | |
| 3.3 | Initial Start | 35 | |
| 3.4 | Testing Under Load | 35 | |
| 3.5 | Installation Checklist | 36 | |
| Appendix 1 – Troubleshooting | 37 | ||
| Appendix 2 - Notes | 38 | ||
| Appendix 3 – Electrical Data | 40 | ||
| Appendix 4 – Exploded Views and Parts Lists | 44 | ||
| Appendix 5 – Notes | 63 | ||
| Appendix 6 – Warranty | 64 | ||
Generac® Power Systems, Inc. 1
