freon
how hard is it to check the Freon level in a class c
Forum Discussion
If it's a rooftop:
1. Clean it. Cleaning the "indoor coil" (the evaporator) requires taking some of the internal shrouding (what you see when the plastic cover is off) has been removed.
2. Leave the plastic cover off, and run the A/C to cool your coach. After an hour or so do this:
a. Measure inlet and cold air discharge temperatures inside the coach. Somebody will have a better spec, but look for discharge to be considerably colder. Say 80 in and maybe 60-65 out
b. On the roof, gingerly feel the refrigerant lines at the compressor. Discharge (smaller one) should be uncomfortably hot. Suction (larger one) should be cold, maybe sweating
c. Measure compressor amp draw with a clamp meter and compare with Running Load Amps (RLA) on compressor label. Should be close if voltage is around 115-120. If low, either failing internal compressor valves, or refrigerant is low. If high, compressor is probably failing internally (shorted windings, binding bearings).
d. RESIST the urge to put "bullet ports" on it to test with a gauge set. THEY LEAK! If you didn't have a freon loss problem, you soon will.
1. Clean it. Cleaning the "indoor coil" (the evaporator) requires taking some of the internal shrouding (what you see when the plastic cover is off) has been removed.
2. Leave the plastic cover off, and run the A/C to cool your coach. After an hour or so do this:
a. Measure inlet and cold air discharge temperatures inside the coach. Somebody will have a better spec, but look for discharge to be considerably colder. Say 80 in and maybe 60-65 out
b. On the roof, gingerly feel the refrigerant lines at the compressor. Discharge (smaller one) should be uncomfortably hot. Suction (larger one) should be cold, maybe sweating
c. Measure compressor amp draw with a clamp meter and compare with Running Load Amps (RLA) on compressor label. Should be close if voltage is around 115-120. If low, either failing internal compressor valves, or refrigerant is low. If high, compressor is probably failing internally (shorted windings, binding bearings).
d. RESIST the urge to put "bullet ports" on it to test with a gauge set. THEY LEAK! If you didn't have a freon loss problem, you soon will.
