Posted by Guido on July 22, 2020 at 16:43:37 from (72.82.162.216):
In Reply to: Tractor AC compressor posted by Texasmark1 on July 22, 2020 at 15:54:53:
Hello Texasmark1,
Gauge pressures seem to indicate low refrigerant charge. What is the vent outlet thermometer reading? 26" of vacuum and 1/2 hour, does not sound enough also.
Try adding some refrigerant and see if the vent temp goes down.As long as the temp keeps going down, you keep adding refrigerant. Keep an eye on the low side pressure. You are looking for a minimum of 20# max of 50#. Your low side going into the compressor should be sweating, if not that indicates a low charge too.
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