Question about Campbell Hausfeld 26 - Gallon Air Compressor

3 Answers

Start up problem

When I start my air compressor up cold and with air in the tank. The motor buzzes(acts as if it is bound up) and in 10-20 seconds trips my 20amp breaker. When I let the air out of the tank the motor starts up and builds pressure to 130psi. Seems to run fine with no air in the tank at start up. Please help

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  • Anonymous Feb 09, 2009

    Mine does the exact same thing. I've changed the breaker etc no luck at all.

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3 Answers

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The problem that you describe is caused by the in-tank check valve and/ or the unloader at the pressure switch. When the compressor cycles off the pressure switch releases the air that remains in the air line thru a small valve. There is a 1/4 " plastic tube extending from the check valve to the switch. Listen for the release of air as soon as the compressor stops. There is a small metal tab that pushes on the unloader valve that may need to be adjusted. The motor does not have enough power to start pumping if there is air/backpressure in the air line. If these parts are working correctly then check the value of the start capacitor and use meter to measure. The cap should test within 95 % of stated value. Parts are available at www.chpower.com. Enjoy

Posted on Dec 13, 2008

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Your compressor's un loader valve is damaged , thus cause a air buildup in line .
When start up occurs the pressure buildup causes the piston of the compressor to stick .
Solution is to renew the un loader valve . If the pressure reaches 8bar of whatever its set to it should cutout with a " hiss sound " indicating the air is unloaded from the system and release the pressure from the compressor pistons to start new with no pressure strain on the motor .

Posted on Jun 16, 2009

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YOUR IN TANK CHECK VALVES ARE BAD. THERE IS AIR TRAPPED ON TOP OF YOUR PISTON WHEN IT IS TRYING TO START UP. DRAIN TANK AND REMOVE THE BRASS VALVE WHERE THE AIR GOES INTO THE TANK FROM THE HEAD (FOLLOW COPPER LINE). THERE IS A PEICE OF TRASH OR THE SEAT THE DISC SEALS ON IS DAMAGED. PART SHOULD COST $10.00 - 20.00. TAKE THE OLD VALVE WITH YOU TO MATCH SIZES. WHEN THE COMPRESSOR CUTS OFF AT FULL PRESSURE YOU SHOULD HEAR IT UNLOAD THE TRAPPED AIR.

Posted on Mar 20, 2009

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Tip

Air Compressor Burn-Out


Small, easy to transport air compressors have become very popular over the last 25 years. However they do have their drawbacks.
The motors on these small compressors generate alot of heat as they cycle, especially under higher tank pressures (PSI's) and air volume usage (CFM's). They work very hard and run more frequently. In time, this heat creates increased resistance in the rotating armature windings (which act as quickly reversing magnets against magnets in the outer case of the motor for thrust to rotate). The magnetic force weakens, the motor gets weaker and hotter and has to work harder to do the same job.
When an air compressor motor seizes in it's cycle and hums or buzzes, it is over heating to a point where a thermostactic relay will break electrical contact (to prevent Fire) and the motor will have to cool before it will run again. each time this happens you are reducing the life of the motor by several hours.

To maximize the life of your compressor, use the following guidelines:

1.Always use the shortest possible cord and plug directly into a 20 amp cicuit when possible,no extension cords! SHORT WIRE+LONG AIRHOSE- electrical current is lost through longer wire and requires a larger gauge (diameter) to carry the current.

2.Make sure the plug contacts are clean- as with automobile batteries:CORROSION=RESISTANCE=HEAT=WEAR.

3. Should your compressor begin to stall during its cycle, attempt to turn it off or quickly or reduce the pressure in the air tank to reduce the load on the motor- while the motor is moving a fan blows air through it to cool it.

4.Should the motor overheat, let it cool untill you can touch it with your hand and bleed most of the air from the tank to minimize the start-up work load.

5.Remember to try to drain the tank after each use to minimize corrosion due to moisture and minimize load the next time you start it up.

Following these guidelines will increase the life of your compressor motor several months if not years.

-Remember-
BROKEN TOOLS CAN'T HELP YOU BUILD OR FIX ANYTHING

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Both the freezer and refrigerator are warm (Superba model). This happened all of the sudden. I felt the tank and lines at the back and the tank was hot and the lines were not cold. The fan motor is blowing...


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If your refrigerator is running but warm, then...

Check out these tips that I wrote about that... it is a great place to start trouble shooting your unit...and something that you can do rather then calling a repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair

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heatman101
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