Model number 919.152920 I have a Sears 25 gallon/4HP horizontal compressor. A week or 2 ago I posted that when this compressor reached 125 PSI it shut off like it should, but when the pressure dropped and the compressor kicked on again it would pop the breaker. The suggestions made in my previous post said the unloader valve is bad, or check valve is bad. I looked in the parts list and I do not see an unloader valve listed in the parts list. I do see a restrictor check valve. I just took the 2 covers off of the unit to take a look at everything. I thought I would kick the compressor on to get it up to pressure and now I can't even do that. It immediately pops the breaker when I turn it on. I started experimenting and the first thing I did was to remove that the small tube/pipe that connects to the switch and to the tank plumbing. I then turned the compressor on and it runs fine, so at least I know the motor is good. What do you folks think my problem is now? Do you think the switch is bad that manually turns it on or off? The parts list calls it a pressure switch. I want to thank you all again for your help.
- posted
19 years ago