Kobalt 17 Gallon-shutting off
by Geoff Wymer
I have 2 Kobalt 17 Gallon model 236005 compressors.
Both have the same issue.
When you turn on the switch the motor will make 1 or 2 struggled revolutions and then it triggers a switch that kills the power. A few seconds later it resets and repeats. This is even with the tank empty.
When I took the line to the tank loose, it would fire and run, I could even reconnect the line and fill the tank once, but when the prssure went down and tried to restart--same problem over again.
I bipassed the external regulator switch and that did not fix the issue.
Not sure what parts to get to fix this. Any help would be greatly appreciated.
When an electric compressor motor starts, it usually pulls more current than the electrical circuit can supply. To handle this "inrush" issue, your compressor motor has a start capacitor that adds power to the circuit, allow the motor to kick over and start, without popping an internal or external breaker.
When a compressor is starting against pressure in the tank, then this inrush assistance is even more critical to the start, as the motor will draw even more than when the tank is empty.
It's odd that you have the same problem on two compressors, yet, if they are the same vintage, perhaps not so odd.
This is what I think your compressor problem is, based on the details you provided.
If the power supply to your compressors is compromised (more appliances drawing power at the same time as the compressor) take other appliances off line while testing the compressor. The same for an extension cord, if you are using one. Both can cause compressor start and run problems.
compressor starts - runs a few seconds-then stops
by Jim Clark
(Winchester, TN., U.S. A.)
Its a Kobalt 20 gal. oilless compressorJim Clark
Hi Jim. Can you give me a bit more info, please?
It runs for a few seconds... what, two, three?
Is the motor running and the pump pumping, or is it just the motor trying to start?
When it stops, does a fuse blow?
Any sound from the compressor pressure switch when it stops?
Are you running it plugged into an extension cord? If so, lose the cord and try it again?
Also, drain the tank fully before you try and start it again. Does this make any difference?
Post your answers as a comment on this thread please Jim.
Kobalt compressor wount shut off
I just put on a new pressure switch but it still will not stop when it gets to the right pressure it just goes till the safty valve opens
Hey Herbie. That's a pain, for sure. The thing is, it is the pressure that is what turns the air compressor off when the tank pressure reaches cut out pressure levels... nothing else.
So, if you've put a new pressure switch on, then either you have the bad luck of getting a bum switch, or, there may be a wiring issue.
Kobalt model #37296 Tries to start then trips breaker.
by Ron Phillips
(St Peters MO)
When I turn it on it sounds like it is struggling to turn on, then it trips the breaker. If I disconnect the copper line it runs fine. It is a Kobalt modle #37296.
Ron, put the copper line back on.
Drain the tank to empty, then plug in the compressor.
If it starts, when it gets to the normal cut out pressure setting and cuts out, make sure that the unloader valve works, will you?
Add a comment here with your findings if you wish.