Quote:
Originally Posted by Vernongrandolph
I was told by the Cummins dealer to turn everything off and let the generator run a couple minutes before shutting it down. He said it needs to cool down a little.
I have had my generator repaired 4 times and even with the warranty it ain't cheap.
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Repair 4 times for what?
Are you saying a Cummins dealer is saying or suggesting your generator was damaged due to shutting it down without turning off the Generator?
Cummins design very expensive controllers to do just that. Sure it does not hurt anything is you do shut things down before manually turning off generator but do you have to is / was the question.
Now point has been made about the ATS contacts. So I did check my manual for my ATS. It does say for Turn OFF heavy loads like ACs and heaters BEFORE turning ON the generator. After generator is running and on shore power turn on the loads.
Note #1 - I have Power Management System that helps Cummins manage this automatically. I know because I sometimes get restless waiting on the ACs to turn on when I have started the generator
Note - 2 - This is opposite sequence of what OP was worried about because it it is transferring from Shore to Generator. I think OP is worried about going from Generator to Shore. For the latter it is established that if both are connected the Generator continues the power until you unplug and if you have Cummins AGS it will safely turn off generator whenever shore power is detected if wired and configured properly.
My takeaway, yes you can manually take the extra steps to turn things on and off, but only situation I would go so far as to say you should is when going Shore to Generator; and it is only to protect the ATS contacts from chattering. But again my EC-30 AGS can do this does this automatically if in Auto mode. Otherwise in manual mode, I would shut ACs down, then go unplug, gp back in and start generators and then the ACs.