Posted by George Marsh on March 27, 2013 at 04:38:53 from (50.104.195.160):
In Reply to: Refrigerant help posted by Fritz Maurer on March 26, 2013 at 19:01:21:
Fritz, If you look, there is a temperature scale on the suction guage, sometimes it on the box the freon bottle comes in. Pop coolers and refrigerators, you want the temperature to be above freezing. Some guages the temp is in celcius. zero celcius = 32 F.
I think the suction pressure should be around 5 psi for 134A.
If you add too much freon, you will see the suction line at the compressor will frost up.
So add the freon slowly, there will be condensation on the suction like before it turns to frost.
This is ture with everything I"ve worked on. Too much freon, liquid will come back, freeze up at the compressor, wash the oil out of the compressor, and you can guess what will happen next.
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