Kobalt 1.8 HP 30 gal - won't run after laying down

by Nick
(Ohio)

1.8 HP 30 gal oil filled, layed compressor down to transport it , now it wont run , think oil may have caused the problem? will the oil eventually run back down? is my compressor ruined?

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Depends on where the oil got to, Nick.

If it's been standing upright for some time, oil should have flowed back to where it was supposed to.

You say it won't run, but have you checked to see if power is at the plug, that power is flowing through the pressure switch to the motor circuit?

Start with an empty tank, and do the checks referred to on the troubleshooting page about why compressors won't start.

Post more info here as a comment when you are ready.

Cheers,

Bill

Comments for Kobalt 1.8 HP 30 gal - won't run after laying down

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Apr 06, 2012
kobalt 30 gal
by: Anonymous

It holds air, it doesn't Pop the breaker , I have it plug in the wall ,to a 20 amp fuse. It will only work when I drain the air out completely ,then it shuts down at 75 psi . But it stays on and motor just hums . If I leave it on the motor will get hot and kick off , so I just shut it off before that ... What's goin on here Bill???
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The motor cannot overcome the load. If the load is created by something in the pump, you need to tear it down and find it. First though, check your capacitor to see if it's failing. See that page linked from sitemap, under electrical or troubleshooting.

Mar 22, 2012
kobalt
by: nick

Thanks Bill, I did start on a empty tank, this time it stopped at 70 psi, then motor started to get hot , the pulley would go a lil bit then stop and so on . So I just shut it off... What is happening here?
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So, we've gone from won't start at all to will start, but only compresses air up to 70 PSI?

If the motor is getting too hot it's working hard to compress air against load. I suspect that the oil has got into some areas it shouln't, and is "joe blocking" a bit.

That's like putting two plates of glass together with oil in the middle. Try to pull them apart. Almost impossible to do, and it requires a lot of energy.

It may be that the oil is creating that sort of effect somewhere in the pump.

Consider tearing it down and checking / cleaning?


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Kobalt 2 gallon air compressor Model U12HCCL: Where is the air filter?

by Susan
(Massachusetts)

Kobalt U12HCCL Photo courtesy of Krillion.com

Kobalt U12HCCL Photo courtesy of Krillion.com

New user. Manual says to check air filter daily, remove air filter cap. Cannot locate this on machine or in manual. Please help! Thanks, Susan
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Hi Susan... I can't see from the photo, but since the air intake is normally near the top of the compressor pump, looking at and from the perspective of the photo I uploaded, I surmise it's on the right hand side near the top, perhaps, but hopefully not, under the shroud.

They are typically a black plastic housing about 2-4 inches in diameter, screwed into the intake port at the top of the pump.

Hope this helps.

Cheers,

Bill

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Decibel raiting model # 470443

by jim
(Gaylord,Mi.)

Any idea what the decible rating would be on the kobalt 1.8 hp 20 gal air compressor ? model # 470443
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Typically the manual will show this information Jim. I don't have one for this compressor but cannot check.

Anecdotally, this model is rated as "loud".

Did you ask Lowes to find out? Customer Care:
1-800-445-6937

Anyone else know?

Cheers,

Bill

Comments for Decibel raiting model # 470443

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Apr 16, 2014
decibel rating
by: jim

I was told by the manufacture that it was rated at 64 decibels witch I find hard to believe.

Apr 15, 2014
Decibel Rating - none listed in manual
by: Anonymous

I just bought the same model yesterday. I checked my manual for you and there is no decibel rating at all. I am curious too, as this unit is EXTREMELY LOUD! Much, much louder than my old Craftsman 30 gal. 5HP unit.

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Drain valve will not turn

by James
(Easton, MD, US)

My drain valve will not turn so I can't drain the compressor.
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OK James, I am assuming that you have tried to turn the drian valve in both directions, with not luck.

That being the case, I would expect the buildup of crud and rust in the bottom of the tank has seized the drain valve making it time to change it.

I don't like the type of drains with the butterfly handle that open, often, in the reverse turn one would expect.

I write about what I would prefer on the tank pages on this site.

However, at the very least, once you have determined what size thread is in the tank (see the NPT pages for a size guide) then I would replace the existing tank drain with one as shown below.

Cheers,

Bill




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