This customer of mine has lost two compressors in the last seven years.
(Med. temp remote unit 1 HP 208/230, 1ph, R12 coverted to Hot Shot.) Happens in winter. I'm suspecting flooded starts due to liquid migration back to compressor. Yes CC Heater is good. Told him I would install a LLS with a pumpdown cycle to help prevent the problem again. Thought I could simply wire the LLS (Sporlan dual voltage MKC-1) in series after the thermostat. However the contactor never pulled in despite LLS powered open and 40 psi low side. Tstat has 240 volts at terminals when 'open' and Yes I wired the LLS for the 240 volt version. This unit was assembled by another company long before I got there so I dont have a traditional schematic to follow. My electrical knowledge is being tested here. (Admittedly not my strongest suit) Here's the weird part... the contactor will pull in when I manually push it in and will remain pulled in until, the tstat opens again. I can't figure out how to wire the LLS. Cant see why I cant just wire in series after the Tsta. Any clues...?