Pressure switch contacts keep burning out.

by JB Johnson
(Sidney, Ohio)

I have a 5HP Sanborn air compressor that keeps failing the pressure switch every month or so. I am on my fourth in the last year. The switch will stick "ON" because the contacts will burn and weld together.

Comments for Pressure switch contacts keep burning out.

Click here to add your own comments

Apr 22, 2017
Testing capacitors
by: Bill

You go to the page on this website titled testing capacitors!

It's linked from the sitemap page under Capacitors.


Apr 22, 2017
Points sticking
by: Anonymous

How do you check the capacitor to see if it failing?

Aug 19, 2015
by: Doug in

Do you have a specific model number?

In addition to what Bill asks, you may want to check the motor capacitors - possibly one is failing, causing excess amperage.

Aug 19, 2015
Compresssor contacts keep burning out
by: Bill

What's the supply amperage, distance from power source to compressor, and ratings for the pressure switch you are using, please?

Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to Compressor Pressure Switch Problem.