Question about Mastercool 67471 Evaporative Cooler Air Conditioner

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When the wind blows my motor stalls and blows the breaker. Please reply slowly as my english in not so good.

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The horse power of the motor is either to small or you can also adjust the motor pulley, loosen the allen set screw on the motor pulley, turn it in one or two full turns. The readjust the belt, there will be less airflow, but the amprege draw on the motor will be reduced.
Have a great day.
Sincerely,
Paul Gibson

Posted on May 03, 2010

  • max04 Mar 27, 2011

    I would suggest that the fan capacitor has probably failed . Check the capacitance ( microfarad ) reading with a cap tester. If the cap has failed, the motor will not have good starting or running torque. Cheers, Steve

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We plug this pump in, it starts to pump then sets off wall breakers. Why is this happening? We have plugged it in directly to 110 outlet and to outside plug ins and it keeps blowing switches


When devices with "Coils" or "Windings" in them cause circuit breakers to trip, it indicates breakdown of the insulation material on the WIRE in the windings to earth or between A.C. Active and Neutral . It only needs for one miniscule part of the insulation to break down for current to be able to jump from one winding to the other or to earth so as to cause tripping of the protective circuit breaker.
In your case, the only remedy is to either have the Winding "Re-wound" at an electric motor repair facility , or if a quote for repair is beyond your budget or wish to proceed, to invest in a new Pump. Same goes for any Motor driven equipment with the same kind of problem.

Jun 28, 2015 | Garden

1 Answer

Runs fine on low speed hums on high speed (turns slowly) is it a capacitor problem, internal windings or controller?


Motor itself is the culprit.

Capacitor helps the motor to start spinning from a dead stop, so NO, it is not a capacitor problem.

Probably high speed windings. Means - New Motor needed.

Another possibility, is the controller could be sending power to "Both" sides of the windings: High speed & Low speed at the same time. But normally when this happens, you hear a loud buzz type of sound, motor will spin slowly - if at all.

Good Luck

Mar 11, 2015 | Pool & Spa

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Compressor is blowing breaker, fan comes on. Ac worked fine last season. when trying to go to any cool setting, compressor will actually stall generator, or trip breaker if attached to house


You have a faulty start capacitor. The capicitor helps start the motor ... since it is not doing its job, the motor draws LOTS more power from the line popping the breaker. Have your professional RV service center service your AC.

Thanks for your interest in FixYa.com. Please remember to evaluate this response.

Jul 05, 2010 | Dometic Rooftop RV Air Conditioner

2 Answers

Saw blade turns real slow then breaker pops


motor is binding up. wait a day and see if it does it again
if so replace the motor

Jun 07, 2010 | Saws

2 Answers

Sluggish on start and blows the breaker on compressor 17amp


replace the start capacitor on the motor body,it is located under a metal cover by loosening 2 screws,it is getting weak,also if you leave this breaker jumped,you will soon over heat the motor windings and ruin the motor

Apr 09, 2010 | Hitachi EC119SA Twin-Stack Air Compressor...

1 Answer

My compressor threw the house circuit breaker out. When i now try to start it up it just hums loudly and throws the breaker each time. Can you tell me the problem


The ONLY reason that a Breaker "Blows" is due to a severe overload, or short circuit or short between Phase & Earth. Or a Contactor failure. Usually this fault is caused by a faulty Motor Winding. Also Check the STAR/RUN Capacitor. Or the Contactor. Also a mechanical problem may "Jam" up the "Drive-train" and cause the Motor to , Stall, & in turn draw huge amounts of Current trying to keep on going. Use a meter on OHMS and work through checking continuity, up to the Motor, and between the Motor and Neutral. You should "See" the resistance of the Motor, ONLY when the switch is ON. from the Plug end. BE CAREFUL.

Feb 11, 2010 | Air Tools & Compressors

2 Answers

No heat in dryer


Hi


Thanks for using FixYa. If your dryer isn't working or isn't getting heated up, you'll need to check the following to be sure what exactly the issue is--

Blows fuses or trips circuit breaker —ELECTRIC Models:
• The amperage readings are at 240 volts. One line will be 24 amps and the other line will be 21 amps. The neutral line will be at 3 amps. If the above amperages are not present, then the house wiring, fuse box or circuit breaker should be suspect.
• Shorted heating element to housing.
• Incorrect wiring or a wire shorting to ground.
• Drive motor winding shorting to ground.

Blows fuses or trips circuit breaker —GAS Models:
• If igniter is not glowing, check for 120 V at igniter.
• Igniter harness may be loose and shorted to base.
• Incorrect wiring or a wire shorted to ground.
• Drive motor winding shorting to ground.


If it runs for a few minutes and then stops, then check for the following:--
• Empty dryer.
• Check motor spins freely.
• Lint buildup around drive motor.
• Low voltage present.
• Blower impeller blocked in blower housing.
• Drive motor - start switch contacts stuck closed.


Please do rate the solution and revert for further assistance.


Thanks

Rylee

Nov 12, 2009 | KitchenAid Dryers

1 Answer

The dryer isn't getting hot. I know there's a


Hi

Thanks for using FixYa. If your dryer isn't working or isn't getting heated up, you'll need to check the following to be sure what exactly the issue is--
Blows fuses or trips circuit breaker —ELECTRIC Models:
• The amperage readings are at 240 volts. One line will be 24 amps and the other line will be 21 amps. The neutral line will be at 3 amps. If the above amperages are not present, then the house wiring, fuse box or circuit breaker should be suspect.
• Shorted heating element to housing.
• Incorrect wiring or a wire shorting to ground.
• Drive motor winding shorting to ground.

Blows fuses or trips circuit breaker —GAS Models:
• If igniter is not glowing, check for 120 V at igniter.
• Igniter harness may be loose and shorted to base.
• Incorrect wiring or a wire shorted to ground.
• Drive motor winding shorting to ground.


If it runs for a few minutes and then stops, then check for the following:--
• Empty dryer.
• Check motor spins freely.
• Lint buildup around drive motor.
• Low voltage present.
• Blower impeller blocked in blower housing.
• Drive motor - start switch contacts stuck closed.



Please do rate the solution and revert for further assistance.


Thanks

Rylee


Nov 10, 2009 | Bosch Axxis WTA 3510 Electric Dryer

1 Answer

Trips breaker, windings not open, no continuity from windings to frame. startsfor split second then trips breaker. Breaker is ok


ASSUMING THIS IS SINGLE PHASE HAVE YOU CHECKED THE CAPACITORS. START CAPACITOR COULD BE BAD OR BURNT LEAD. HAVE YOU MADE SURE THE PUMP IS NOT LOCKING UP. POINTS IN THE PRESSURE SWITCH LOOK GOOD. HOPE THIS HELPS, JODY

Apr 26, 2009 | Plumbing

1 Answer

Craftsman 33 gallon air comp keeps kicking breaker


There are several conditions that would cause the problem that you have. Worn bearings, weak capacitor, or leaking in-tank checkvalve. Worn bearings would allow armature to drag against the field windings. Easy to check, motor shaft will feel loose in housing and the bearings will be noisy when you turn by hand. Motor capacitors should read to within 95% of uf value printed on side. You must remove at least one lead and short connectors for a moment then read with meter. Repair shops will generally test for free if you do not have a cap. tester. The in-tank check valve will cause undue strain on the motor if it leaks pressure back to pump from tank. Follow air discharge hose to brass valve at tank. Simple test with air in tank remove airline at checkvalve and look/listen or soapy water. Replace if it leaks or remove and clean debris till no leak. If motor strains with no air in tank I would rule-out check valve. One final condition, which is rare, is the flyball switch inside of motor. The motor has a start winding and run winding. Contacts to this internal switch will sometimes fuse in start position and cause your condition, however a motor stuck in this position will make an unusal sound because it cannot switch to run position. (like a car stuck in first gear) If you feel that this could be the problem, remove motor rear cover and sand contacts. Good Luck on your repair and email if you have specific question.

Apr 01, 2009 | Craftsman Air Tools & Compressors

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