3Z395 C 1 - will not pump air

by REX
(WICHITA KS SEDGWICK)

HOW TOO GET IT TO PUMP AND HOLD AIR WITH OUT OVER HEATING

MODEL NUMBER 3Z395 C 1
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Rex, tell me the conditions of the compressor.

I infer from your comment that the compressor runs, that it is pumping some air into the tank (what PSI does it get to) and then what, the compressor stops, goes out on thermal, pops a breaker... what?

Bill

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Speedaire 3JR77 - Motor gets hot & shuts off, and also oil shoots out of crankcase breather

by Kurt Kummer
(Bristol, TN USA)

We have a Speedaire 3JR77 and the motor started running hot and shutting off. We took the motor off and took it to electric motor repair shop, and they said the motor was fine.

We put the motor back on, and now after the pump runs for a while it will blow oil what I think is the crank case vent.

There is a plate on the side of pump that has USA cast on it, and there is a 3/4" tube sticking up out of it with a hole on each side near the top. This is where the oil blows out.

Do you know what is causing this, and could the motor overheating and the oil blowing out be caused by the same problem in the pump? I hate to buy a new pump if this one can be fixed.

Thank you for your help.
Kurt Kummer
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Hey Kurt, what I thinks is happening is that your piston seals are worn to the point that a lot of air is blowing by them into the sump.

That would account for why you have oil blowing out (particularly if the sump is full) and might account for the motor overheating.

If there is air blowing by the seals, then it is going to take a lot longer for the compressor to reach cut out, and if that's longer than it takes for the motor to overheat, then the motor will go off on thermal before the tank is full.

Would my guess that it's taking a lot longer to fill the tank than it used to be accurate?

Cheers,

Bill

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Oct 16, 2013
3z395c keep tripping the breaker
by: Anonymous

my air compressor 3z395c keep tripping the breaker why is it doing that..
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A bit hard to help out with this one when I don't have any information about the circumstances of the compressor popping the breaker.

Please start a new thread, and provide as many details about the air ocmpressor conditions when the breaker pops.

B.






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Mdl. 3Z323 air compressor won't start and run

by Richard
(Phoenix AZ)

would a bad pressure switch cause my mdl 3Z323 not to run? I f so, where would I even begin to locate one for a compressor this old?
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Richard, please see the troubleshooting section on the sitemap page for a page about reasons why an air compressor will not start.

Don't assume it is the pressure switch until you have checked.

Since I don't have a photo of our venerable old Speedaire, I cannot see what pressure switch yours has. I suspect, however, if you take your pressure switch with you to a compressor store, you will find a replacement pretty easily.

First though, with the info provided on the troubleshooting page, narrow down the causes.

Cheers,

Bill

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Converting a 3z323 to 220v

by xavier
(wasco ca 93280)

i have a speedaire compressor 3z323 1stage. i lost the wiring diagram for it, iwould to run 220v instead of 115v. Is that possible?

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Oct 15, 2013
220v
by: Doug in s.d.ca

Looks like that has a 1hp motor, so I doubt it.
Look at the plate on the motor - if it will run 220, the wiring should be on the plate.

May I ask why you want to run 220 on such a small motor?

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