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hey everyone....i really do not work on refrigeration....im doing a friend a favor who has a service contract with me for the hvac of the building....its a i guess med temp walk in box should maintain about 38-40 f.....the condensor on roof is r22....this is a temp controlled pump down system .....i guess thats what it looks like??today i walked into the walk in box and just the evap fans were running....it was about 55 f in the box....i went to the roof and found the low press control open....lpc is set for 30psi cut out and 75psi cut in...compressor rla is 4.8A rated for oper MAX 6.7A.....i just want to know if these pressures and temps are correct and if the LPC is set right.....another refrig tech who was working on the next store told me the LPC should be set at 10psi cut out and 30psi cut in....i really do not work on refrigeration and i know its R22 , i do not want to go by A/C measurements.....system has a txv, a solenoid at the evap....and its about 25 f outside.....thank you i will p[ost piuctures on next post