1.5ENGINE PROTECTIVE DEVICES

Section 2 – Operation

IMPACT-36 plus II Recreational Vehicle Generator

◆1.4.5 HOUR METER

Indicates the time the engine-generator has operated, in hours and tenths of hours. Use the hourmeter along with the periodic maintenance schedule for the generator set.

This generator has a computer that monitors low oil pressure, oil temperature, engine speed, and low voltage output. This section discusses those protec- tive devices.

◆1.5.1 AUTOMATIC LOW OIL PRESSURE SHUTDOWN

The engine is equipped with an oil pressure sensor that shuts down the engine automatically when oil pressure is too low. If the engine shuts down by itself and the fuel tank has enough fuel, check the engine oil level.

◆1.5.4 LOW VOLTAGE

The computer monitors the voltage output of the gen- erator. If voltage sensors indicate that voltage has dropped below a preset level, the engine will auto- matically shut down. Once the unit has shutdown, the computer is automatically reset when the engine is restarted.

NOTE:

The computer allows for the low voltage output that occurs during startup. A time delay that allows the engine to start and warm up is pro- grammed into the monitoring system.

Before restarting a generator that has been

!shutdown, disconnect all loads the generator might power by whatever means provided, such as the recreational vehicle’s main circuit breaker.

▼	1.5.1.1 Initial Startup

During initial startup, a time delay built into the shut- down control system allows oil pressure to build. The delay allows the engine to run for about 10 seconds before sensing oil pressure.

▼	1.5.1.2 Sensing low pressure

If the system senses low oil pressure during opera- tion, the engine shuts down. If the engine has not been restarted after a low oil pressure shutdown, and the low oil level has not been corrected, the engine runs for about 10 seconds as described above, then stops.

◆1.5.2 HIGH TEMPERATURE SHUTDOWN

A temperature switch with normally-open (N.O.) con- tacts is mounted near the oil filter. If engine tempera- ture were to exceed a preset temperature, the switch contacts close and the engine shuts down.

◆1.5.3 OVERSPEED

If engine speed is increased manually (or otherwise) beyond the control of the computer control system, the computer disables the load capability of the gen- erator and shuts down the engine.

2.1BEFORE STARTING THE ENGINE

IMPORTANT: INSTRUCTIONS AND INFORMATION IN THIS MANUAL ASSUME THE GENERATOR HAS BEEN PROPERLY INSTALLED, CONNECTED, SER- VICED, TESTED AND ADJUSTED BY A QUALIFIED INSTALLATION TECHNICIAN OR INSTALLATION CONTRACTOR.

◆2.1.1 INSTALLATION

Generator installation must have been properly com- pleted so it complies with all applicable codes, stan- dards and regulations and with the manufacturer's recommendations.

◆2.1.2 ENGINE LUBRICATION

Have engine crankcase properly serviced with recom- mended oil before starting. Refer to "Maintenance" and "Specifications" sections for oil servicing proce- dures and recommendations.

Any attempt to crank or start the engine

!before it has been properly serviced with the recommended oil may result in engine failure.

Do not attempt to physically adjust or control

!the engine speed. Equipment damage or per- sonal injury may result.

◆2.1.3 FUEL SUPPLY

The engine must have adequate supply of proper fuel to operate. Before starting, check that sufficient fuel is available.

Generac® Power Systems, Inc. 7