Hey! This site is reader-supported and we earn commissions if you purchase products from retailers after clicking on a link from our site.
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.
_______________________
Compressor contacts keep burning out
What’s the supply amperage, distance from power source to compressor, and ratings for the pressure switch you are using, please?
________________________
Contacts burning
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.
_________________________
Points sticking
How do you check the capacitor to see if it failing?
__________________________
Testing capacitors
You go to the page on this website entitled testing capacitors!
It’s linked from the sitemap page and troubleshooting pages.
Let us know what you found if you would, please.
If you wish to learn how to adjust air compressor pressure switch control valve, visit our detailed page for more information!
New comment? New question? Please add it here along with photos to help others help you with your compressor and equipment problem!
