Tag Archives: generator

Exercising A RV Generator

Cummins Onan 5500 Generator
I had picked up from various sources that running the coach generator was a good idea for at least an hour a month. Then I started reading the manual for our generator and discovered how important “exercising” an RV generator really is.

When you don’t use an RV generator regularly, moisture builds up and the system starts to degrade. For our Cummings Onan 5500 gas generator, it is recommended that it be run at a minimum of 50% capacity for two hours every four weeks. It is best to run the generator for one long rather than several small periods of time. This keeps the internal parts lubricated, gets moisture our of the system, and prevents what’s called varnishing.

We were worried that we would not be able to run the generator while at the storage lot, so Amber asked the management and they said it was ok. I have gone to the storage lot to check on Irving and while I was there the last two times, I ran the generator for over an hour each time with both air conditioning unit running. It was very necessary to run both A/C units since it was over 100 degrees in the coach when I arrived.

We are definitely learning these things as we go along. It helps to learn as much as you can about your particular RV so you can keep it running for many years.