compressor builds pressure but none comes out

(I have a) small task force air compressor.


The compressor will build pressure and indicates on gauge 125 psi.

Second gauge for outlet indicates zero presuure. I have turned the knob in completely to maximize the out let pressure, but still have zero reading on gauge and none to hose.






Bill answers...

Howdy, and thanks for writing in from Missouri.

You aren't the first person, and probably won't be the last, to close your regulator tight, shutting off the air pressure and flow to the air hose, instead of opening it up.

It's either that, or your regulator has failed in some way that block the air flow (unlikely), or you've got something in the tank discharge or air line before the regulator that is blocking the air.

Try turning the regulator knob the other way. Also, check and see if there's a shut off valve on your compressor between the tank and the regulator.

Cheers,

Bill



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air compressor - siezed fan

2 tank 2 horsepower air compressor. Fan no longer turns
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Then I suspect your motor shaft no longer turns as well, since many of the motor fans are on the other end of the motor shaft.

Is the motor running? Is the compressor pumping?

Bill

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Whining noise from compressor tank

by Ryan
(Houston, TX)

My air compressor makes an annoying whining noise whenever I use a pneumatic tool when the tank is full. As the tank looses pressure, the noise goes away. How can I get a full tank to operate quietly?

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Bill says...

Hmmmm, a whining compressor. Maybe give it some cheese? :-)

Kidding aside, I take it that the compressor has reached cut out pressure level, the motor has stopped, you have a full tank, and you are starting to use air?

If the motor is not running, all I can think of is that you have an obstruction of some sort in the outflow or perhaps into the regulator that is resonating at higher pressure, but stops when the pressure drops.

If that is the case, removing the obstruction or, perhaps, replacing the regulator might do it, but I can't be sure, as I would think this might cause a whistle rather than a whine?

I sure could use some help here if anyone else has had this problem?

Cheers & thanks,

Bill

Comments for Whining noise from compressor tank

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Dec 03, 2012
Line whistles when compressor starts
by: Cbooth

I just increased my line diameter from 1/2" to 1" at the dryer and filter. When compressor starts there is a harmonic whistle as pressure increases thru 110 psi then it stops.
Never had this before eliminating the bottle neck in the line. any ideas what the cause is and how to eliminate.?

ed

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Snap ON CD 16 air compressor struggles on start

WHEN I START THE COMPRESSOR IT STARTS FINE, AND KICKS OF AT 150. BUT WHEN IT DROPS TO 100 AND TRIES TO KICK BACK IN IT STRUGGLES AND BLOWS THE FUSE.
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Based on what you say here, friend, I suggest you have a read of the UNLOADER VALVE information page. Your Snap On compressor problem sounds like a classic unloader valve issue.

I'd sure like to hear, as a comment here, if I'm right...

Cheers,

Bill

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