anish.sheorayan
27-05-2013, 10:32 AM
I have modified a system from R 134 a to R 22, initialy it has Danfoss SZ 240 with TEN 5 expansion valve orifice no. 4, Since oil is different for both the gases, so I flushed it thoroughly, Now i have fitted Emmerson make KCG 72 (2nos) in tandem sequence and expansion valve is changed to TEX 5 with orifice no. 2, initialy system has 15 kg R 134a but now I have charged 24 kg R 22 into the system, parameters are as follows:- suction pressure 70-80 PSIG discharge is 350 - 370 PSIG return gas temperature is 10-15 degree. Here the problem is I am not getting proper Evaporator, It should be around 3-5 deg C while I am getting 15-17 deg Evaporator temperature, I woder what went wrong??