La Rosa Ice Cream Dipping Station struggling to hold temperature.
I cleaned the condensor coil (filthy) with nubrite and painted with coil paint.
Recovered refrigerant, pressure tested to 150psi, left overnight. Pressure dropped 1psi,
but ambient temperature dropped almost 30F too, so I figured that's within the limits.
Triple evacuated down to 300 microns on the last pull and I metered in 10oz virgin r134a
per the info plate.
refrigerant: r134a, 10oz
150/ Low side psig
335/ High side psig
~0psi on suction line next to compressor
no refrigerant valve on the high side
128F compressor discharge which corresponds to 193psig
~32F evaporator discharge - frost is forming on the pipe,
but my infrared thermometer reads 40F (?)
So, it seems that high side pressure is low and the low side pressure is low.
I originally thought the capillary tube might be plugged, but I would expect
higher pressure on the high side. Right?
I'm thinking the compressor is shot. Does anyone have any thoughts on something else I should check before replacing the compressor?
Would checking the amperage draw on the compressor tell me anything?
BTW, I am a noob, but I am EPA & Texas licensed (universal).