wiring Craftsman with larger motor

by Wayne
(Boise, Id.)

older twin cylinder craftsman air compressor

older twin cylinder craftsman air compressor

older twin cylinder craftsman air compressor
older twin cylinder craftsman air compressor label

Hi I have an older twin cylinder craftsman air compressor with a 12 gallon tank. I bought it cheap with no motor on it. The guy I bought it from said he thought it had a 1 h.p. motor before it went bad.


My question is this, I have a couple of motors, one being a 1/4 h.p. older motor I put on it and it just didn't seem to give it much get up and go. It worked but it just didn't seem to be right.

Now, I have a newer 1.5 motor (G.E.) and I'm wanting to put it on there. Is it safe to say this will work without blowing it through the roof of my little shop? It's 110V. but it has four wires coming out of instead of two or three. Anybody know if this will work or not and if so how do I wire it?

Comments for wiring Craftsman with larger motor

Click here to add your own comments

Feb 26, 2015
3 phase
by: Doug in s.d.ca

See the motor plate:

450/208-230

That's three hot wires (and maybe a fourth neutral) at 208 or 230V. Most buildings, even commercial, have only 120 / 240 single phase, with Neutral/(ground) being one side of the 120V circuits, and the two hots being 240V.

Unless you have triple breakers on the main panel, you have single phase 220 or 240V power.

Feb 25, 2015
confused
by: Wayne

No I didn't realize it is a three phase motor. I bought it from a friend who bought it from an auction last Saturday. The guy I bought the old compressor from last year said he thought it had only a 1 h.p. motor on it before it went bad. So, with a three phase motor you need 220V right? There are only three small wires coming out of it, black, yellow and blue. I'm lost!

Feb 25, 2015
wiring power
by: Doug in s.d.ca

You realise that's a 3 phase motor?
If you have 3phase power, you just hook it up for whichever rotation you want.

However, you typically need about a HP for 4CFMs, so you need a 4 or 5 horse motor to fully take advantage of your pump.

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.

installing a new motor on Craftsman compressor

by Wayne
(Boise, Idaho)

compressor specs

compressor specs

compressor specs
old motor I put on it before
new motor specs
craftsman compressor

Okay here I go again. I posted yesterday on weather or not the motor I have and want to install onto my compressor would work or not. I have an older 2 cylinder craftsman compressor I bought without a motor (it was cheap enough). I went through it a little, changed the and filter then I put an old 1/4 h.p. motor I had on it and it fired right up, even built up pressure. It's just that there wasn't quite enough r.p.m. from the old motor to really push the c.f.m. to quickly. The guy I got it from said it had had a 1 h.p. on it originally. A friend brought me a G.E. 1.5 h.p. motor the other in which I have tried to put on it. He thought the motor had come from like exhaust vent of some kind. On the old motor it had only two wires coming out in which I wired a on/off switch into and like I said it worked. However this new motor has three wires coming out of it (see pictures). A gentleman yesterday commented on my post and stated the motor is a two or three phase motor and asked if I was equipped to run it? "I don't know", what is equipped to run it mean? Does it mean 220v ? I tried getting it going last night and all it would do is buzz. I really need some help on this, any input would much appreciated. Thanks, Wayne in Boise, Idaho. 208)345-1340.

Comments for installing a new motor on Craftsman compressor

Click here to add your own comments

Feb 26, 2015
power
by: Doug in s.d.ca

Let's try it this way:

Where are you trying to hook this up? A residence, or some commercial building?

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.