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Topic: A/C Question (Read 407 times) previous topic - next topic

A/C Question

I spent a coach buck last July getting the dash air cooling when I bought it. Now it's not cooling again so off to MOT again.
So I was wondering. I'm getting ready to replace my alternator with a Delco 40si 240Amp. Replace batt isolator with 250Amp Sterling ProSplitR. 3 new 8D AGM batteries. Running through a 3000watt inverter. If I put a soft start on the front A/C would this system run it? Obviously if I stop or get into traffic where a lot of time was spent idling I would run the generator or turn the unit off. It would be nice to have that as a backup on the highway without having to run the generator. Thoughts.....

Thanks,
Robert
2008 Nimbus 342
Build# 6464
ISM 500
Allison 4000 w/retarder
2021 Jeep Grand Cherokee

Re: A/C Question

Reply #1 –
I do it all the time with a similar setup; albeit lithium batteries.

Roof AC while driving, no generator.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: A/C Question

Reply #2 –
Check that the cables from the alternator can handle the extra amps. You might have
to put in larger cables.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: A/C Question

Reply #3 –
A quick note about your dash A/C issue...mine quit working as expected and it turned out that the condenser fan wasn't running.  If you turn the key on, turn the A/C on, the condenser fan should run.  If it isn't it could be a fuse or relay...easy fix.  See this thread for more info and pics:  Dash A/C Condenser Fan Wiring
Keith
2003 U320 38' #6197

Re: A/C Question

Reply #4 –
So I have see several of the condenser fans fail. I also was quite surprised to see the receiver dryer to badly failed corrosion internally that the entire system was contaminated with rust the one I replaced it with actually has a desiccant viewing window so you can externally inspect. I'll try to remember to post the link later when I'm not on my phone
Scott

Re: A/C Question

Reply #5 –
Quote from: WS6_Keith –
A quick note about your dash A/C issue...mine quit working as expected and it turned out that the condenser fan wasn't running.  If you turn the key on, turn the A/C on, the condenser fan should run.  If it isn't it could be a fuse or relay...easy fix.  See this thread for more info and pics:  Dash A/C Condenser Fan Wiring
[
Last year the fix was a new condenser fan and dryer. Supposedly held a nitrogen charge with no leaks. So it will be interesting to see what the diagnosis is. It's blowing air just not cold air. 
2008 Nimbus 342
Build# 6464
ISM 500
Allison 4000 w/retarder
2021 Jeep Grand Cherokee