How do you test the capacitors? And how do you safely discharge them?
by Jim Richardson
I have a Porter Cable oil free compressor (mdl#CPF-6020-1) that pops my dedicated 20 amp 110v breaker as soon as you turn it on. The motor turns over about 2-3 times and then trips the breaker. The piston moves freely by hand so I am thinking it could be a bad start up capacitor?
So how can I test a capacitor and how do I safely discharge it before testing? Or if you think this is caused by something else, please make suggestions.
Jim, I am still looking for a safe way to discharge and test capacitors for business and for the DIY compressor user. No luck so far.
Does it exhibit the same symptom when starting with an empty tank? If so, your diagnosis is likely spot on.
THERMAL RESET SWITCH
I HAVE A 5 HP SINGLE PHASE 230V COMPRESSOR THAT THE THERMAL SWITCH KEEPS CUTTING OFF. IT JUST STARTED DOING THIS TWO DAYS AGO IT HAS HAD BEEN WORKING FINE AND DOES NOT SEEM TO BE OVERHEATING. i AM IN A REMOTE LOCATION AND I NEED TO GET THIS BACK UP AND RUNNING ASAP. CAN I TEMPORALLY BYPASS THIS SWITCH
If you have a heat problem and you bypass the cut out, then the heat will destroy the components that the thermal switch is designed to protect.
Can you bypass the thermal switch? I'm sure you can. Can you afford the greater damage repair bill that will likely be the result?
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