I was asked to install, a provided condensing unit, in a 176 cu. ft. refrigerated van with a 59"x31"x15/8" plate evap. (no fans), these components worked together in another van. The compressor is a ct-22, 2800 btu, 115v.
The suction press. is 15 to 17 psi, the discharge press. is 135 psi. evap. surface temp. is
-10 box temp is 25 at it's best. The current super heat is 17 to 22 degrees. This is my first plate evap. system and I do not know what to expect. Do these conditions sound anywear near normal?
Please explain how you are measuring your superheat. Give specifics.
Are you on hotshot or 134 or 409 or what?
Measuring S H at evap. R-22
Head pressure seems awful low for r-22. Might need more refrig. Suction seems a bit high, possibly due to low charge and valve being wide open. Is there a receiver on this system. Sight glass??