Great Lakes Tool Mfg. Inc 2Hp 4.6 gallon twin stack air compressor - Thermal Rest Keeps Tripping
(Old Bridge, NJ )
I have a Great Lakes Tool Mfg. Inc 2Hp 4.6 gallon twin stack air compressor.
Direct drive, oiled, 120 volts 13.5 Amps.
The air flow is great on this thing compared to other models of its size, so I want to get it back running.
So here is the problem.
I plug it in directly to the wall, no extension cord (never use extension cords). I throw the switch on (tank empty, bleed value open) it stammers (like a rough idle of a gas engine) the thermal switch trips within seconds. It never gets to its no load speed.
Called customer service hotline. They told me this usually caused by the centrifugal switch becoming loose. I checked that and it seems fine.
I thought it might be the run capacitor so I checked it with a microfarad meter and it was out of range. Replaced it, still does it. I have not tested the start capacitor yet because they have crimped fittings so I'd have to cut the wires to test it. I also bypassed the thermal switch and I still get the stammering. What could it be? I can post a video of it on youtube if it would help. Thanks.
Rich, I don't build motors so I would have to accept the word of the support group that points to the centrifugal switch. It may look alright, but it may also need a run test to be sure.
However, that it is going off on thermal reset very quickly intrigues me. Thermal means the motor is hot, and if it doesn't start and run, how is it building heat?
That heat could be a result of low power on startup, and that points to the start cap. I think you need to test it too.