[pairodice]

I FINALLY got my 12-volt pressure switch to work (almost) properly this afternoon.  I probably didn’t need to replace the unit but I could not get the pump to turn off.  A quick call to Tom (Thanks, Tom!) and he recommended calling Square D - I could not believe how quickly they answered the call and then solved the problem!  Even to an idiot like myself what he said made sense (after several times!)...  Now I need to know where you guys set the start and stop pressures and the regulator settings. 
I currently have my regulator (the little yellow knob that adjusts the needle on the guage up and down) to 35psi which seems to be enough to run the doors and flushes the toilet (more on that in a moment). I have the pressure switch turning the pump ON at about 30psi and it seems to go OFF at about 42psi.
How SHOULD I have these adjusted please?  
The bigger problem is the toilet - when we flushed the toilet the flap shut and then the air was heard entering the ‘chamber’, then the air kept going.  Maybe we don’t have enough air pressure?  Or maybe it’s too much? 
BTW, this is all being done with the 110-volt pump turned OFF - only the 12-volt pump is ON (and it’s so quiet!)
Thanks! Adrian

[smagown]

Air pressure 60 psi
Water pressure 35 psi

[pairodice]

Air pressure even on the 12-volt pump at 65? That would certainly make my doors happy but where would I set the cut in and cut out for the pump?

[pairodice]

Anybody??? I would like to set this today - was thinking that my 'differential' on the pump controller is set around 20psi so if I set the pump cut-in (when it turns on) to 40psi that should have the pump cut-out (turns off) at about 60psi and I think that is the threshold of where the 110volt pump takes over...

[Richard]

Cut in 55. Out at 70.



120v compressor. In at 70 out at 90


Engine governor. In at 90. Out at 125


See the logic?

[pairodice]

Thanks Richard - that makes total sense! Mine is currently set to 45 cut-in and cut out at 55.
When we flush the head the pump seems to run forever - I’m thinking there is something going on with the flapper/air assembly that is holding it open. The 110volt compressor seems to run the head perfectly fine. Not sure what the difference is unless the head requires more pressure than the 12volt can supply(?)... I’ll try your settings and see what happens.