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Trouble w/DEWALT d55155 about 10yrs old Trips motor reset (50% of the time) @ 80lbs when recovering It's plugged in a 20 amp circuit Problem seems to be getting worse Cold temps has always caused start up problems

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6ya6ya
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Posted on Jan 02, 2017

  • 1383 Answers

SOURCE: Dewalt 4 gal air compressor will not build pressure in take.

The bleed valve is an unloader of sorts that allows the compressor to start with-out a load. It closes when the pressure in the airline reaches about 20-25lbs with good volume. If air volume is not sufficient, the valve will not close. To solve the problem lets do a few tests. A long cord will reduce power and reduce air volume. Try powering the compressor with-out extension cord. If bleed valve closes when you do not use a cord, the compressor is not getting enough voltage, use shorter cord of the 12 gauge quality and more hose to reach work. If valve still does not close, check for air leaks on all fittings including around pressure switch and drain valve with soapy water. Repair as necessary and retest. If no leaks were found, temporarily plug bleed valve port with screw/bolt and run compressor till set pressure cut-off while counting minuites/seconds. The compressor should fill and shut off within three minutes or so. If it takes an unusually long time to fill, then the reed valves /valve plate is worn and leaking pressure back into cylinger. Leaking valves will usually result in very hot discharge airline/air. Reinstall the bleed valve after test. Parts and partslist are available at www.toolpartsdirect.com . Good luck on the repair and email if you have other questions.

Posted on May 06, 2009

mickey813
  • 472 Answers

SOURCE: Dewalt D55155, I want to change oil, what type and

use30 wt oil and fill it up till it comes 1/2 way up in the bubel

Posted on Nov 05, 2009

Testimonial: "thank you, that makes sense"

  • 243 Answers

SOURCE: I have a D55151 2hp 4gal Dewalt air comp that will

check the checkvalve and the blow off valve. starting up to its own pressure is not possible.

Posted on Feb 07, 2010

SOURCE: Dewalt/Emglo D55155 compressor screeching and breaker blown

Sounds like it isn't getting oil on the bearings. Take it apart yourself,after you get a diagram of it and find a parts source.

Posted on Mar 22, 2010

  • 4234 Answers

SOURCE: Dewalt D55155-QS 220 volts can it convert to use 115 volts?

The short answer unfortunately is no. The internal motor that drives this compressor requires 220 and will not work properly with 110. Your only option would be to replace the motor with one compatible with 110. The cost of that would approximate a major portion of a replacement unit.

Sorry about the bad news.

Dan

Posted on Jul 08, 2010

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2 Answers

My Dewalt 735 planer won't turn on. I blew the house fuse a few times, it would start after I came out. Now it won't start at all and it's been a couple days


The 735 draws 15 amps, which is the rating of typical lighting circuits in homes. The receptical in the wall is sometimes 15 amps although those circuits usually have 20 amp breakers. Since you said "fuse", it might be a bad fuse or even the wiring between the two. Circuit breakers go bad also. If you can confirm the receptical supplies voltage, it is time to check the 735.

Unknown if the device has a termal switch inside. I doubt it would go bad, but you implied a resting period allowed it to run several more times after the fuse in the basement was replaced. If it reset once, it should do it again. If you can find a diagram, there might be a fuse inside, but someone would have to take it apart to check.

A motor can get so hot that a solder joint inside can let loose and it will never run again. Sometimes the coil (windings of the motor) can short out (melt together) and this will increase how much current goes through it and also generate more heat and melt more windings together. Besides producing a smell, your house fuse would burn out real quick.

I had a chuckle over your 2nd sentence but I dare not say why. If it started after you came out (of the house), why did you not run it for a longer time?

A motor requires more power at the instant of turn on. 15 amps of running current will require 20 amps or more when starting. "slow blow" fuses (vs quick action) and circuit breakers can deal with the short period over current requirements.

Nov 23, 2015 | Dewalt Planer (DW734)

1 Answer

How do i fix my dewalt 55155 air compressor


It is a 15 amps motor and will need 6 times (90) that amount of amps to start up. Plugging it into a 15 amps circuit may work but a 20 amps circuit is more apropiate. Kitchen circuits are 20 amp circuits.
You can try plugging the compressor directly into the wall and see if it refills with air without trippiing the circuit breaker. Using an extension cord should be done with a #12 or #10 wire gage type, smaller type will cause a power loss in the cord and will cause the compressor motor to trip the circuit breaker.
Power formula is I square R, or the amps multiplied by itself and by the resistance of the wire. E.G. 90x90x4 = 3200 watts. This is at start up. To find the voltage drop divide the watts by current, 3200/90 = .... get the point? Keep voltage drops to a minimum, use heavy wire gage extension cords.

Mar 11, 2015 | Dewalt Air Tools & Compressors

1 Answer

Why does dewalt 55155 keeps tripping motor reset. Plenty of current on a 20 amp circuit


Place amp meter into circuit to determine amp draw at time of reset trip. If higher than 15 amps suspect leaking check valve or failing capacitor. If it trips at lower than 15 amps suspect weak reset breaker. Good luck

May 28, 2014 | Dewalt Air Tools & Compressors

1 Answer

Whirlpool frontload dryer trips circuit when started all of the sudden. Gas dryer, replaced circuit, must be dryer


The dryer should be on a dedicated circuit. Is anything else on the same circuit? Try plugging the dryer into a different circuit and see if it still trips the breaker. The breaker trips because there is either a short or too much power is being drawn for the size of the circuit. Check how many amps the dryer uses, and make sure the circuit is rated for that load. If the dryer needs a 20 amp circuit, and the circuit it is plugged into is only a 15 amp circuit, that will trip the breaker.
If all that is good, there is a problem with the dryer, either a short or the motor is drawing too much power, which usually means it is at the end of it's useful life and need to be replaced. If you are handy, there are sites you can go to which will show how to remove the motor. There are appliance parts stores which will test your motor, and sell you a new one if you need one. I have a 30 year old dryer that still runs, with it's 4th motor and 5th belt, if you are handy. The cost of a repairman to come out is probably not worth it after the dryer is about 10 years old, better to replace the dryer at that point. The new ones are much more energy efficient and do a better job than the older equipment, so they are worth the investment.

Aug 02, 2013 | Whirlpool Duet 7.0 Cu. Ft. Super Capacity...

1 Answer

Brand new saw trips 20 amp breaker every time I turn on the saw. It starts to turn and after about a second the breaker trips. Have tried different plugs on a different breaker. Still it will not start....


How long of an extension cord are you using? Is it at least a 14 gauge wire? It should be 12 gauge. If it 16 or a long 14 it will cause the problems that you mention.

If this is occuring when its plugged directly into the outlet then it is likely a problem with the saw. Before you take it back tho try another outlet on a a different circuit.

Jun 30, 2011 | Dewalt DW744XRS 10-inch Job Site Table Saw...

1 Answer

Trips circuit breaker


Make sure it is on a 20 amp circuit with NOTHING else creating a load.

A 15 amp circuit is USUALLY not enough.

If it trips a 20 amp all by itself it probably has a failure that needs servicing.

Dec 08, 2009 | Emerson Microwave Ovens

1 Answer

Trips circuit breaker when turn on.


This tool needs to be on a 20 amp breaker. And not a GFCI. GFCI breakers are very sensitive to high amp start up motors.

Nov 04, 2009 | Delta 50 - 760 1.5HP Dust Collector

2 Answers

Have emglo airmate when I turn it on the overload trips I reset it turn on again sometimes it start or I have to do this a couple times to start?


It could be a couple of things. To me it sounds like you have a short in the motor or damage to the cylinder and piston. You need special equipment in order to test the armature and field for a short. There may also be damage to the brushes and brush holder. There could also be a problem with the cylinder and piston. The bearing could be bad causing a hard start for the motor. I think it could be the combination of the two problems listed above. You may want to check the pump first and if that is not the problem it is an electrical short in your motor in which case you should buy a new compressor. It will cost more to fix if the motor is damage than to buy a new one. "BER" Beyond Economical Repair.

Sep 30, 2009 | Dewalt d55151 factory reconditioned emglo...

3 Answers

High amp start up draw


I don't care what kind of stories Craftsman tells, their numbers don't add up.
One horsepower is ~ = 740 watts of energy.
2.5 hp equates to a steady-state power consumption of  ~1850W and this could be 50% higher during the first second or two after turn-on.  Your 15 Amp circuit is pushed to the limit by that power level; 15 Amps X 120 VAC = 1800W And, motors aren't a breakeven game; part of the power they draw is wasted in heat.

9 amps steady-state would be a power consumption of over 6kw which cannot be right. Either your measurements or the motor is faulty. 







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