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Old 06-28-2007, 09:15 PM
oldred oldred is offline
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Maybe not a lot to do with oil but another thing to watch for in really cold weather is the unloader tube to the pressure switch, or if set up differently the unloader itself, as these things tend to freeze (a tiny drop of water is all it takes) and thus fail to relieve the pressure on the pump for the start-up cycle. Combined with cold thick oil this is a recipe for disaster and I have seen several motors burned out because of the excessive start-up loads due to this problem, if the load is so high the motor stalls it can be better since this will usually trip the breaker but if the motor does run and draws excessive AMPs it could heat up and burn out. Something as simple as a high wattage light bulb placed close to the line or other parts in the unloader system can prevent this if the compressor has to be left in an excessively cold area.
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