Compressor keeps burning up contacts on pressure switch
(Fort Myers FL)
I have an Ingersoll Rand SS3660V 60Gal 3 HP compressor. About a year ago I replaced the pressure switch because the contacts on the switch were burnt and fusing together. Now a little over a year later, I have a bad switch again. What is causing the contacts to fail so fast? Is it the motor itself or the capacitors on the motor? What would be the best way to test these components?
The speed with which the pressure switch fails is connected to the frequency of use, that's axiomatic.
In your case, I wonder how the amperage / voltage supply to the compressor is? Under power could be part of it.
Are there many other electricity-drawing appliances on the same circuit that might be running while you are using your compressor?
Worth checking out, I'd say.
Can a pressure switch cause a breaker to blow? I think capacitors are good. Motor with compressor turn freely by hand.
Rich, yes, if the pressure switch has a short, when the switch trips, it pulls too many amps and pops the breaker.
Tell me about the scenario when the breaker pops. Compressor just starting, breaker pops on cut out...add details as a comment if you would.
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