THE FOLLOWING PRESTART CHECKS SHOULD BE DONE AT THE FIRST START OF THE DAY AND EVERY 8 HOURS OF OPERATION AFTER THAT.
Check oil level
Check exhaust system for leaks
Check fuel system for leaks and to make sure there is adequate supply
Check battery terminals for corrosion and battery for good condition
STARTING & STOPPING PROCEDURES
When starting and stopping your generator, it is best to start it and shut it off without loads
Turn off air conditioner and other large loads before attempting to start the genset
If genset is diesel powered, pre heat according to operators manual prior to start attempt10 seconds and wait at least 30 seconds before trying again)
Push and hold the start switch(do not crank more than
See “troubleshooting” section of manual if set does not start
Before stopping, turn off air conditioner and other heavy loads, allow set to run for 2 minutes
Avoid running for long periods at no load or loads under 1kW
RESTARTING A STALLED GENSET If you genset has stalled…
Disconnect or turn off as may appliances as possible and try restarting the genset
Reconnect appliances one by one up to a total the does not overload the genset
RESETTING CIRCUIT BREAKERS
If a breaker in the vehicles mail power distribution panel or on the genset trips, either there is a short circuit or too many appliances being operated at the same time
Disconnect or turn off as many appliances as possible and reset the circuit breaker
If breaker does not trip, reconnect the appliances, one by one, up to the total load that does not overload the genset or trip the breaker
COLD/HOT WEATHER & HIGH ALTITUDE OPERATION
If you travel at high-altitudes or extreme temperatures, be aware the genset can lose power in lower density air caused by such conditions. You may not be able to operate as many electrical devices under there conditions as you could under normal operating conditions
Altitude: Power output will decrease 3.5% for each 1000 feet above Onan’s base rated altitude of 500 feet
Temperature: Power output will decrease 1% for each 10 degreesF increase in ambient temperature above 85 degreesF
The generator is not the only appliance affected by hot weather, your coach air conditioners require more power to run at high temperatures. For example, if the outside temperature increases from 85 to 100 degrees F, your air conditioner may require 20-25% more power to run efficiently. This can also limit your ability to run as many electrical devices.
Make sure the engine oil viscosity is appropriate for the weather temperatures. Onan suggests 15W40 oil.
Set the altitude adjustment knob (if so equipped) for your altitude
Make sure nothing blocks the air flow inlet and outlets from the genset
Keep the genset clean
Perform maintenance when due. Refer to operators manual for maintenance schedules.
Set the Summer/Winter preheat lever(if so equipped) to winter, in temperatures below 55 degrees F.
GENSET EXERCISE, STORAGE & RETURNING TO SERVICE
It is important to run your generator to prevent moisture build-up, fuel system damage, and poor performance