compressor has a 220v wall plug will it hurt to change to 110v plug and how do i do it

i have an old portable air compressor the electric wall plug it has on it is for 220 v the wire itself is attached to the compressor by way of a metal box with 4 screws two of the screws are attached to a wire that goes up into the motor housing the other two are attached to the wire for the 220 v plug my question is can i just loosen the screws remove the 220 v plug and wire and put in its place a 110 v plug and wire?

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Sep 12, 2013
plug
by: Doug in s.d.ca

" can i just loosen the screws remove the 220 v plug and wire and put in its place a 110 v plug and wire? "

Sure, though I'm not sure what a "220v wire" is.

Thing is, you probably would like the thing to function when you finish.

If the motor is in fact 220v, just plugging it into 120v is at best, not going to work well, if at all.

It's possible the motor can be connected for 120v, but that is motor-specific.

It is also possible that it is actually a 120v motor with the wrong plug for some specific use at a specific location.

So, you need to find out more about the motor itself before proceeding.

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Single phase air compressor won't turn on.

by Dave
(Edinboro, PA)

Bought a new Quincy single phase 60 Gallon Compressor and won't turn on.
After purchase, installed the compressor in the garage approx. 6 feet from the electric panel.

Used 12/3 wire and installed a dryer outlet. The compressor did not come with an ext. cord so i had a dryer cord approx. 6 feet long.

Wired the compressor using the black, red and green wires in a 120/240 volt configuration. Black and red to seperate line terminals and green to ground screw. The white wire is not used in this type of wiring so it was capped off in the compressor switch cover.

I switch the double pull 40 amp breaker on and turn switch to Auto and nothing. Is there a way to bypass the pressure switch to determine if it is bad? Compressor motor doesn't even hum but there is power at all terminals when tested. Any suggestions?

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Jul 22, 2013
No turn on
by: Doug in s.d.ca

Just to be sure - when you checked power, you see 120 to ground on red and black, and 240 or so between red and black, right?

If so, I'd pull the cover on the pressure switch. The few I have seen have a button near the adjustment screws. If yours does, try pushing the button. The compressor should start.

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VT6311403 AJ 60 gal husky has 220 volts on pressure switch

Good Evening

I have a VT6311403 AJ 60 gal husky electric compressor that I cannot get to start.

This unit is made by Campbell Hausfield and I spoke with then today.

I have two 110 legs hot on both sides of the wall plug reputable when you go to one hot wire and ground.

If you test both 110 at one time the meter shows 220.

At the pressure regulator switch you have 110 on the black and 110 on the white same on the motor terminals 110 each.

The tech from Campbell Hounsfield said you should be able to touch both 110 wires on the pressure switch and it should read 220 volts.

Well when I touch both black & white terminals on the pressure switch at one time I get nothing at all but when I touch then one at a time and ground them I get 110 volts.

What am I doing wrong? He said the problem was in the breaker box I think he is wrong because I have changed out the breaker with another double pole 20 amp from another one that I know works for sure

I have even went so far as to tie the wall plug to another location in the breaker box that I know for sure that is a working breaker and still nothing the 3.2 hp motor will not start

I just don't know what to do any more need some help please
Thanks
Russ
________________
Russ I am not going to comment on the elctrical side of things as I am not an electrician.

I was unable to find specifications on your air compressor on line.

So, I am going to assume that your compressor is wired for 220 volts, and if the breaker is wired correctly and the pressure switch has the leads in the right locations, then, if the tank pressure is below cut in, you have power to your compressor motor circuit.

If you have power flowing through the pressure switch to the motor circuit, and there is no reaction from the compressor when you power up, my first thought is that something is halting the power from getting to the motor, and that something is often the start capacitor.

Your question is live now. I hope someone with an electrical background can comment on your wiring questions.

There is a page on this site about how to check capacitors, as well as another page about all of the things that you need to check when the compressor won't start, both under troubleshooting.

Bill

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Nov 05, 2013
lost 220?
by: Doug in s.d.ca

OK, to recap, you have 220 at the outlet, but only 110 at the pressure switch.

The only way that could happen is if one side of the 220 is open between the plug/outlet and the switch, and the switch is "ON".

With the switch "OFF" you'll likely see the 110 on one pole and nothing on the other.

If that is the case, you may have a bad power cord.
Check that with an ohm meter. Unplug the compressor, measure resistance (ohms) from one pin on the cord to the switch. One side of the switch should read near zero ohms. If not, repeat with the other plug pin just to see that at least one side is zero ohms. Then fix the open (high or infinity ohms).

If that doesn't pan out, please send pix of the cord plug end and the switch end.

Have fun.

Nov 05, 2013
Husky Pressure Switch
by: Russ

Using a double pole 20 amp breaker one black on one pole and one white on the other pole one green to ground bar. Yes the motor is wired for 220 it has a tag that says 220 only
Thanks

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Air compressor motor cycles on and off after one or two-second start up.

by Jim
(Oakland CA)

Marathon 240v motor on 60-gal compressor.

Data plate missing but was told it was a 5 HP motor.

Motor starts easily, runs 1 or 2 seconds and then cuts out.

Can hear the centrifugal switch drop out about this time.

Almost simultaneously the motor begins to gain speed but then cuts out in 1 or 2 seconds with the centrifugal switch clicking out again.

Cycle will continue until power is cut off. (Have bypassed the pressure switch and eliminated it as a problem.)

Does this sound like a run capacitor problem or what? Thanks.

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Sep 22, 2013
motor cycle (off-road ;)
by: Doug in s.d.ca

Run cap is possible.
Also, if new install, could be weak connection where it runs with low amps at start, then when load kicks on is not getting enough current to keep running.

Sep 22, 2013
Cycling motor
by: Buster

Just a thought, but you say when it starts and you hear the centrifucal switch clicks, it slows down and when it clicks again the motor speeds back up, sounds like you may have a bad run winding in the motor. There are two sets of windings in a single phase motor, start & run, the switch cuts the start circuit, & capacitor out and allows the motor to speed up to the design speed.
Buster

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