Craftsman hates cold weather

by John
(Knoxville, TN)

120 volt 1.25 HP 3 gal. I have a warm weather compressor. Works great if above 55 degrees but cooler than that it gets sluggish the stops. Have to use a hair dryer to heat it up and it will run great again.


______________________
Bill says...

Hello John. My goodness, 55 degrees isn't cold.

Two things come to mind. First, have you considered replacing the oil with something less viscous? That's cheap and might solve the problem with your cool weather hating compressor.

The next is that it might be a motor issue.

Check the oil thing first, and see if that helps, OK?

Keep us posted, if you would.

Cheers,

Bill

Click here to post comments

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

Craftsman compressor running in cold weather

by John
(NY)

3 Gal electric oiled compressor (125psi max)

Is there a minimum/maximum operating temperature for this. Does cold temperature affect the oil in any way?

Thanks,
John
__________________________

Hello John. To be brief, yes and yes!

Please see Cold Weather Starting linked from the Troubleshooting section on the site map page.

Sears has a very good parts and repair section on their site. You can, I expect, purchase a manual for your compressor from there if you have lost yours. The manual will tell you the operating temperatures of your compressor.

See...

www.about-air-compressors.com/compressor-manuals.html

... for a list of manuals I have been able to locate and upload for visitors to use.

Cheers,

Bill

Click here to post comments

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

106154780 - get the water ou

by shawna
(broken arrow ok.)

how do i get the water out of this thing
__________________
I don't know Shawna, maybe take it out of the creek? :-)

Get the water out of what thing, the tank?

See the tank section on the sitemap page and follow the appropriate link for that info.

Cheers,

Bill

Click here to post comments

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

Craftsman air compressor ~ possible unloader valve

by Joe Piechocki
(Westminster,Maryland)

It will run and build up a 150 PSI.Now after that It won't do anything but blow a fuse .Like the motor wants to run but it can't.If I loosen the line between the compressor and check valve.And let the air out.It will start up.No problem.Which part is bad?The check valve?Or is it in the compressor?

___________________
Bill says...

Howdy Joe. No, I don't think it's the check valve, and I don't think your compressor is failing.

What I think you need to do is read the page on UNLOADER VALVES, that one linked from the VALVE page.

If the unloader valve isn't working properly, the compressor motor can overload the circuit on start up and blow a fuse.

Check out the unloader valve first, and if that is working OK, write back in here and we'll work on it further.

Cheers,

Bill

Comments for Craftsman air compressor ~ possible unloader valve

Click here to add your own comments

Feb 10, 2012
Same problem plus another problem
by: Adam Norton

I am having the same exact problem as this user with one more little kink added in.

I have the Craftsman model 919.176730 (www.searspartsdirect.com/partsdirect/part-model/Craftsman-Parts/Air-compressor-Parts/Model-919176730/0247/0703000/00050293/00001), however this system does not seem to even have an unloader valve present.

After learning its function, it seems like a no-brainer that an unloader valve would be an absolute must on a compressor so I looked very thoroughly for the part and even spoke with a Sears parts person on the internet but it is not readily visible on the compressor itself, nor on the extensive parts list on the link posted above. B

ut anyway, I have the same problem. If the tank is empty or near empty or if I disengage the belt between motor and compressor, the motor runs just fine. Likewise, if I engage the belt during operation of the motor (the motor is built on a pivoting base) the compressor will work just fine. The big problem is that if the air tank reading is about 30-40 psi or higher, the motor is very weak starting off and then simply trips a breaker. I have done some research and found something called an inline unloading check valve. Is it possible that the check valve on certain Craftsman models also serves the purpose of the unloader valve?

__________________
I believe on this model the unloader is part of the pressure switch. By emptying the tank of air, any pressure that's trapped over the cylinder bleeds down into the tank when the compressor stops, and after a time, that load is absent when the compressor tries to start, and it does, if it is the unloader.

You need to be sure that the power is clean. You need to make sure you are not using an extension cord. Empty the tank, run the compressor to cut out, if it will go that high, and listen near the pressure switch for the unload when the compressor stops.

If your compressor starts with no pressure in the tank, but bogs down before the tank pressure gets to cut out, that's also an indication that the motor cannot handle the load, and that points to a run capacitor, motor failure, plugged tank check valve etc.

More tips are on the site map page under troubleshooting.

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 Craftsman Compressor Issues.