husky 4.7 hp 80gal tank model C801H does not turn off

by Tai Vo
(Houston tx)

I just bought a husky 4.7 hp 80gal tank model C801H. I wire it up and the compress turns ON on both auto and off mode. It also does not turn off after reaching 155 psi. This is a brand new equiptment. There is a reset button on the motor, but will that fix the issue? What do you think is wrong with this?

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Hello Tai. You say the Husky compressor does not turn off when the tank pressure reaches 155 PSI.

What are the cut in and cut out pressure settings of the pressure switch, please?

Bill

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Husky Pro 60 Gallon leaks oil

by Marc
(WA)

I went back to switch it on one day and there was oil on the tank below the compressor. It looks to me like it is coming from the drain plug or at the bottom of the compressor head jug. I can't really tell. Long story short, it slowly leaks out the compressor oil over a couple weeks just sitting without being turned on.

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Bill says....

Marc, you are not alone. My low end DIY air compressor leaks oil continuously.

First thing to do is check to see if all bolts are in tight. If so, clean it up, an then wait to see if you can spot the leak location.

Until you can nail that down, it's pretty hard to suggest a solution.

Of course, keep the sump topped up when you go to use the compressor until you have resolved the issue.

In my case, the compressor sits on a sheet of cardboard that I replace periodically, along with the oil lost from the sump.

Cheers,

Bill

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husky tf2912. It was overloading at the motor

by Colin

Hi Bill,

I have a husky tf2912. It was overloading at the motor so I went straight for the check valve. Before I could replace it someone plugged it in and it had thrown a piston arm through the side of the crankshaft housing. I replaced the pump and the check valve and started it up. it ran great for a couple of minutes then the motor started to smell and slow then speed back to normal, then, it overloaded again. Any thoughts?

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Colin, the motor was in good shape if it had enough force to drive the piston arm out of the housing. That this happened suggests to me a more serious problem than a check valve. The power train is suspect, whether it was a jamming piston or a blocked high pressure valve... I can't tell. Now, if you've rebuilt the pump, I have to assume that there is no problem with the power train, the check valve is good, that's leading me to think about the valves or, perhaps, in destroying the pump before, the motor was damaged in the process.

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What about a pressure switch not cutting off? i dont trust the gauges anymore but i do know that it got pretty close to the max pressure. Would that cause an overload of the motor?

UPDATE. adjusted pressure switch to a low psi (cut off 100/ on 90) and still a problem. Thinking youre right about the motor.

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Have you checked your PRV lately? It should open and blow off pressure long, long before the pressure level reaches a danger point. If the pressure switch is not cutting pressure off at the normal cut out pressure setting, then for sure, you need a new pressure switch. I doubt though that the pressure level was enough to drive a piston shaft out of a housing. That sounds more like a mechanical jam to me.

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i manually checked them and they seemed fine. i dont think the pressure was getting dangerously high, just too high for the motor/ pump working against it. I turned the pressure switch all the way down and left drain valve and petcock open to run for a break in period. it cycled fine. turned on around 80 and off about 100. but anything over that it seems the motor gets really hot and wants (or does) overload and trips the mag starter.

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Colin, I keep coming back to a mechanical issue causing back loading of the pump and the motor. That it occurs at 80 PSI supports this. I'm thinking a pressure valve is still the problem.

B.

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19 gallon oil less horizontal compressor motor is starting to spark like crazy!!

by Reid
(Nampa, I'd )

Well after looking at all the complaints on Husky air compressors, the problem with the one I have does not surprise.
I have a 19 gallon horizontal oil less compressor that runs when it wants to and lately sparks have been flying out of the motor then shuts off. I made sure that there wasn't any debris that's causing the aching. A whole motor assembly is way more that what I paid for it. Is there any fix or is it junk?

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Bill says....

Motors wear out just like any mechanical or electrical component. Call you local electric motor rebuild shops, give them the specs on your motor, and ask what the charge is to have the motor rebuilt. Or, do they have a used motor (might come with issues, though) that might suit.

Good luck.

Bill

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