Been working on refrigeration equip. now more than ever.
Had a call today on a R12 converted to MP39 Reach in bev. cooler with glass doors. Found bad contacts on lp switch. Changed out switch but found the CI set @ 45# and the diff @ 15#. When I set the new switch to these settings it cycled off to quick. I reset the switch to 37# CI and the CO is 16#. Suction psi with the cooler @52deg was 28#. Is this ok? thanks.