I have a Hill rack Mod. AT4H4500RCM1, with some three comps, 4DK3R16METSK800,only two are working, i have to change the liquid line drier cores every 3 to 4 monts, they are totaly plugged.
R409 refrigerant, Suction is 20psig, discharge is 193psig, drop leg temp. is 113*F, outside temp 83*F, all cond fans are working. Have to clean out TXV screens on a regular basis.
Non condensibles in reciever ?