Author Topic: I Lost Another Air Compressor Pressure Switch  (Read 83 times)

GNAP

I Lost Another Air Compressor Pressure Switch
« on: November 06, 2020, 04:23:44 PM »
over the last 10-12 years, Ive lost about 6 air compressor pressure switches. They last roughly about 2 years, then one of the contacts burns off, then I have a dead air compressor. I lost one last night, and finally decided to correct the pressure switch issue. I finally assembled enough parts to install a contactor rated for 4 times the amp draw of the motor, I picked up 2 cabinets (customer was sending them to the scrap dumpster) and work graciously donated all of the pieces and parts necessary to finish up the installation.

The air compressor runs perfectly, the pressure switch now only carries the load of the contactor coil, and hopefully will last a little longer, I have a new pressure switch on order, the one being used now has one burnt contact and one functional one, the functional one will hopefully last until the new one gets here.

PJB

Re: I Lost Another Air Compressor Pressure Switch
« Reply #1 on: November 07, 2020, 09:33:37 AM »
Maybe go with a NEMA  contactor vs  IEC although it may  not fit in the box.      They are heavier duty.     A mercury relay wont burn out either
1991 Bridgeport Series I 2J-VS  9"x48"
1979 Clausing Colchester Bantam Mk2 11"x30"
1972 Harig Super 612
2015 Tormach PCNC-1100 Mill

"I wants what you gots!"

GNAP

Re: I Lost Another Air Compressor Pressure Switch
« Reply #2 on: November 07, 2020, 09:49:42 PM »
Its rated for 60 amps
jack