: Converting 220 to 120 on my Air Compressor


Bones
03-16-2006, 09:41 AM
I have an old Monkey Wards compressor with a 220 motor on it and I want it to be 110 so it's more portable and no dedicated plugs since I rarely use it anymore and would use it if I didn'r have to unplug shit, etc. I refuse to sell it for nothing to buy a POS craftsman oiless also. I'd trade it in a heartbeat though.

It's a standard 20 gallon horzintal setup like this.
http://images.canadiantire.ca/media/images/Workshop/CompressorAirTools/Compressors/0587926_160_CC_3132b.jpg

scotte
03-16-2006, 12:09 PM
Assuming it's setup for dual voltage, the motor covers should have a wiring diagram on the inside. Wire it per the diagram. Check it twice. Cap off any unused wires. Check it once more. That's about it.

Bones
03-16-2006, 12:20 PM
Assuming it's setup for dual voltage, the motor covers should have a wiring diagram on the inside. Wire it per the diagram. Check it twice. Cap off any unused wires. Check it once more. That's about it.
no shit? Never thought it'd be that easy. I will look into it tonight and see what I can fry :laughing:

Gummi Bear
03-16-2006, 12:54 PM
See if it has the flag terminals, or wire pigtails for a multivoltage motor. The nameplate will tell you if it is a dual voltage or not, look there before bothering to take the coverplate off.

If it is dual voltage, and the diagram is worn off, or gone, look it up in an Ugly's Electrical Reference book, you should be able to find one at an electrical supply house, home improvement center or a major chain book store.

Mechanos
03-16-2006, 01:35 PM
Also, take a look at the amperage rating of the motor. If you can rewire it for 120volts you are halving the voltage, but it still takes the same amount of energy to run the motor. That basically means the amperage required to run the motor at 120volts is twice the amperage required at 240volts. If you exceed 15amps (standard 120volt circuit rating) you'll need to have a dedicated circuit to run the compressor. That severvely limits the "portability" of the unit. Even if it comes up only requiring 14 amps at 120volts, you'd still have to unplug everything else on that circuit to plug the compressor into it.

Probably be a lot easier to just run a 220 circuit for it in the garage and call it done.

Bones
03-16-2006, 01:42 PM
I have 220 in the garage. The dryer :D I just hate switching it and would like to have the compressor close to my bench so I don't have the hose running everywhere. It's a cheap POS compressor and I refuse to toss any $$ into it for what I need/use it for. Rather have a new 110 that is also a lot quieter.

It is what it is, and I'll use it this way if I have to. Not goig to blow the $$ on another..lol

Travis Waldher
03-16-2006, 01:59 PM
I have 220 in the garage. The dryer :D I just hate switching it and would like to have the compressor close to my bench so I don't have the hose running everywhere. It's a cheap POS compressor and I refuse to toss any $$ into it for what I need/use it for. Rather have a new 110 that is also a lot quieter.

It is what it is, and I'll use it this way if I have to. Not goig to blow the $$ on another..lol

ok, run a second outlet off your dryers.

Then remember to only run one or the other, not both at the same time.

Mechanos
03-16-2006, 02:04 PM
Also, don't fool yourself...... an oilless compressor is anything BUT quiet. Usually, they are louder than the belt driven type compressor you have now. How about buying a lenght of air hose and routing it up through the floor joists and over to your bench. Then you can leave the compressor over by the dryer outlet and just plug in your working hose at the bench whenever you want to use it.

Bones
03-16-2006, 02:17 PM
Also, don't fool yourself...... an oilless compressor is anything BUT quiet. Usually, they are louder than the belt driven type compressor you have now. How about buying a lenght of air hose and routing it up through the floor joists and over to your bench. Then you can leave the compressor over by the dryer outlet and just plug in your working hose at the bench whenever you want to use it.
Oh I know the oiless suck musky taint as stated in my original post. If I can't 110 it I will do your idea and run the hose to the bench overhead through the joists and maybe a tee someplace for when I need to rotate my tires or some lame ass project :laughing: