We have a Mod.PS 250 transfer switch that does not pull in. We have air blown the coil area as best we could no improvement. We are going to try using a contact cleaner next. The generator contactor is the problem. .The shore power pulls in properly. The generator contactor chatters like the contactor coil may be weak? Generator voltage is 125,
If the contactor is defective can you supply a replacement and what would the cost be. We are an industrial refrigeration service contractor
and have triple pole double through manual switches on hand in case their is not a part available