need to switch wiring from 220v to 110v but all instruction in gone

by roy russell
(kings mtn.ky)

have a craftsman 3 hp 20 gallon horizontal tank a/comp model nr.3014-3 which has been running on 220 volt wiring .need to switch it back to 110 volt for an offsite job need info soonest.thanks.


_________________
Bill says...

Will post this in the hope someone can provide this info for you. I cannot.

Be aware too that you will not get 3 HP of power from an electric motor that is running on 120 VAC.

Cheers,

Bill

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Jan 06, 2012
update on compressor
by: roy russell

after further looking at the compressor,it's very possible the model number is actually3014-B instead of ending in 3 as I originally posted.this compressor is the type that can be run on either 110v or 220v.it was wired on 110 when I bought it ,but i switched it to 220.since then all the instructions that were on the motor have weathered away as the compressor was used in a barn to bale tobacco.it has 6 spade connectors but 2 seem to be stapled to a single bar.there is the #1 at top of plate that don't seem to go to anything,below is spade#2 with a white wire coming from motor #3 now has the black power cord wire.#4is the 2 spades on bar and now has white power cord wire attached #5 is nothing? #6 has a gray wire also from motor attached.Just don't want to risk smoking this motor as compressor is really good.

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Selecting & intstalling a new motor for a compressor

by Nick
(Strathroy, ontario, canada)

My dad recently acquired a new compressor. It runs off a 15hp 3 phase electric motor connected via direct drive in line to the compressor.

His shop does not have 3 phase power, and he has left it up to me to find an alternative method to get this compressor up and running.

What are my options? I would like to use the available single phase 240V that is available at the shop without using a converter.

I am wondering about hooking up a smaller single phase motor connected via pulley. However, with one motor, the compressor shaft will be pulled to one side. What size motor can I run to get the 15hp to the compressor via pulleys?

Is there a better method?
________________
Nick, I think the question of misaligning the shaft is a good one. If the compressor is built with a direct drive, it may not be able to handle the side load of a sheave & belt. I don't know the brand of compressor we are speaking of, and that might be a question for them.

As to the motor, all readers, please forgive my ignorance, but is there not a 240 volt x 15HP motor out there?

Cheers,

Bill




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Alton air compressor motor will not start.

by Gary
(Indiana)

I have an Alton 1 gallon compressor and the motor will not start. I tap side of the shroud covering the motor and it kicks on for a split sec. then shuts off.
________________
Assuming this is a new issue for your air compressor Gary, that lets out the usual issues of not enough power, using an extension cord that's too small, other appliances now using power from the same circuit as your compressor etc.

It sounds as though your pressure switch is OK too, otherwise, giving your compressor motor a whack wouldn't result in it trying to start.

It's possible that it's the start capacitor, or you may have a motor that's failing.

Bill

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Aug 13, 2013
no start
by: Doug in s.d.ca

I'd be checking for loose and/or corroded wires and connectors, anywhere you can find them, including on the start cap

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Wolf Sioux 2.5Hp 50ltr Motor Problem

by Dave J
(Newport Wales)

The stator of the motor is loose on the shaft and so when the motor starts it spins and jams itself against the end housing (then trips the mains). The stator doesn't seem to be keyed to stop it spinning, but does seem to have some sort of thread on it. However, the motor spin direction (anticlockwise from black plastic fan end) seems to be the wrong way if the stator is relying on the thread to lock itself to the shaft. Has anyone any idea what direction the motor is supposed to rotate or how the stator is supposed to be locked to the main shaft? If the motor is supposed to spin clockwise, any ideas why mine isn't!

Cheers,
Dave.

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