Quote:
Originally Posted by rsgt
I have another poa valve. Is there a way to check if it is moving free and not stuck before it is installed?
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Yes they can be tested.
Remove the valve or the discharge line from the valve.
Hook the low side pressure gauge to the POA valve.
Then pressurize the POA valve, I use air regulated to 60 lbs at the evaporator inlet with the expansion valve removed. I use a rubber tip blow gun.
For R12 the pressure should be about 30 lbs at sea level, 27 or so for R134a, add 1 lb for every 1000 ft above sea level.
The POA is adjustable through the outlet, look inside you will see a hex nut. Its a strange size though.