Dewalt D55141 Support Question

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Question posted by mcdougaldwilliam on June 17th, 2021

Compressor Will Not Shut Off. Pressure Goes Up Until Safety Valve Opens

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Answer #1: Posted by Odin on June 17th, 2021 10:11 AM

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Odin

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See https://www.manualslib.com/manual/754731/Dewalt-D55141.html?page=16, codes 1 and 2.

Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.

Answer #2: Posted by SonuKumar on June 17th, 2021 7:36 PM

SonuKumar

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https://www.manualslib.com/manual/754731/Dewalt-D55141.html?page=16

Why does my Dewalt compressor won't shut off?

If the air pressure in the tank gets to the normal cut out pressure setting, and the compressor does not shut off, then that typically is a problem with the pressure switch.

Why is my compressor constantly running?

Reciprocating units need time to stop and cool off, or the internals will become damaged. When damage occurs, the compressor can experience valve failures, causing the compressors to run constantly. ... For screw compressors, the cooling systems are much better, so the compressors can run constantly with no issues.

How do I know if my compressor pressure switch is bad?

You need to know, when the compressor has cut off, if the power is still flowing from the power supply side to the motor side. If the power is not flowing, meaning the pressure switch has tripped to off at 95 PSI, and since it's supposed to trip of at 120 PSI (on our fictional compressor) then the switch has a problem.

Why does my compressor not shut off?

If the air pressure in the tank doesn't reach the normal cut out pressure level, and since then the air compressor can't shut off as the pressure never reaches the cut out pressure level, then look to the intake valve or internal gasket leak as the possible source of the problem.

https://www.youtube.com/watch?v=GMvhJArxDr4

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Related Dewalt D55141 Manual Pages

Instruction Manual - Page 2

English D55141 Air Compressor A. Safety Valve H. Regulated Pressure Gauge D. Check Valve G. Power Cord Wrap Pump/Motor Speciﬁcations ... HEIGHT WIDTH LENGTH AIR TANK CAPACITY (GALLONS) APPROX CUT-IN PRESSURE APPROX. Quick Connects F. On/Off Switch B. Air Tank Drain Valve I A H G 2 CUT-OUT PRESSURE SCFM @ 100 PSI (689.5 kPa) D55141 30 lbs. (13.61 kg) 10.5" (266.7 mm)...

Instruction Manual - Page 3

... air tools, basic safety precautions should always be required. • Store flammable materials in death or serious injury. SAVE THESE INSTRUCTION DANGER: RISK OF EXPLOSION OR FIRE WHAT CAN HAPPEN HOW TO PREVENT IT • It is normal for electrical contacts within the motor and pressure switch to spark. • Always operate the compressor...

Instruction Manual - Page 4

... attendance with the product when it is not safe for breathing. Always use certified safety equipment: OSHA/MSHA/NIOSH respiratory protection designed for use . To reduce the risk of fire, do not allow the compressor to the ventilation openings. • Operate compressor in a clean, dry well ventilated area. English • Restricting any of the...

Instruction Manual - Page 5

... each use compressor to alter the factory set operating pressures. All pressure vessels should be performed by a DEWALT factory service center or a DEWALT authorized service center in accordance with national and local electrical codes. 5 If air tank develops a leak, replace it immediately with a new air tank. • Unauthorized modifications to the safety valve or any...

Instruction Manual - Page 6

.... • Always turn the compressor off and bleed pressure from electrocution. See Grounding Instructions ...compressor head, engine head, engine exhaust or outlet tubes, can be caught in serious injury or death from the air hose and air tank before attempting maintenance, attaching tools...safety equipment: ANSI Z87.1 eye protection (CAN/CSA Z94.3) with guards or covers which the compressor...

Instruction Manual - Page 7

... conditions and duration of each use , noise from the air compressor at all compressor could lead to hearing loss. • Always wear certified safety equipment: ANSI S12.6 (S3.19) hearing protection. PRESSURE SWITCH The pressure switch automatically starts the motor when the air tank pressure drops below the factory set cut -in the ON position to...

Instruction Manual - Page 8

... cut-out pressure setting, the safety valve (G) will shut off the motor. DRAIN VALVE The drain valve (H) is located at the base of the air H tank and is open, allowing compressed air to remain inside the air tank. COOLING SYSTEM This compressor contains an advanced design cooling system. Grasp the hose at the outlet side of two tools at...

Instruction Manual - Page 9

...delay fuses. ber decreases. 12 AWG and 10 AWG may also be properly grounded. NOTE: If compressor is connected to a circuit protected by providing an escape wire for the electric current. In the ...USE 16 OR 18 AWG.) Voltage and Circuit Protection Refer to the motor and overheating. Ensure regulated pressure gauge reads 0 PSI (0 kPa). 2. The cord set or plug MUST be used has the ...

Instruction Manual - Page 10

...these openings. MOVING When moving the compressor, grasp the handle and carry the compressor as close to maintain proper operating temperature. Attach hose and accessories. 10 Observe extension cord safety instructions if necessary. TRANSPORTING When transporting the compressor in the atmosphere. Ensure regulated pressure gauge reads 0 PSI (0 kPa). 7. Ensure the drain valve (H) is...

Instruction Manual - Page 11

.... 4. Run the compressor for the air tool or device. 3. CAUTION: Risk of Bursting. Shut-down . 6. Ensure regulated pressure gauge reads 0 PSI (0 kPa). 3. Remove hose and accessory. 4. Initial Set-up in the air tank during the break-in air tank. Ensure the On/Off switch (A) is in the OFF position. Open the drain valve (counter-clockwise) fully...

Instruction Manual - Page 12

.... from noise. Slowly rotate lever to cool down before starting compressor, pull the ring on drain valve. 5. When air tank pressure gauge reads 10 PSI (275.1 kPa), rotate valve to catch discharge. 4. Close drain valve when finished. If the safety valve does not work properly, over-pressurization may contain substances that are regulated and must be performed by...

Instruction Manual - Page 13

... products sold in Latin America, see website for use with your tool are missing, call 1-800-4-DEWALT. Always use of Purchase Repairs To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment should be hazardous. LATIN ... available for purchase from date of the air compressor. For warranty repair information, call 1-800-4-DEWALT for a free replacement. 13

Instruction Manual - Page 14

... the motor shuts off is called cut -in pressure. PSI: Pounds per minute. Cut-In Pressure: While the motor is off , protecting your air compressor, it is recommended that is turned on and begins to prolong the life of the following marks: UL, CUL, ETL, CETL, have been evaluated by OSHA certified independent safety laboratories...

Instruction Manual - Page 15

... from safety valve...6 Knocking Noise...6 Pressure reading on the regulated pressure gauge drops when an accessory is used 7 Compressor is not supplying enough air to operate accessories 8,9,10,11,12 Regulator knob has continuous air leak 13 Regulator will not shut off air outlet 13 Troubleshooting Codes CODE POSSIBLE CAUSE POSSIBLE SOLUTION 1 Pressure switch does not shut off...

Instruction Manual - Page 16

... into, weld or otherwise modify air tank or it is higher than the CFM or pressure supplied by pulling on ring. Operate safety valve manually by your air compressor, a larger compressor is being used 8 Prolonged excessive use of air 9 Compressor is not large enough for accessory 10 Hole in Regulator under flow conditions while accessory is...

Instruction Manual - Page 52

... "D" shaped air intake grill; the kit box configuration; DEWALT Industrial Tool Co., 701 Joppa Road, Baltimore, MD 21286 (AUG06) Form No. and the array of lozenge-shaped humps on the surface of pyramids on the handgrip; A16639 r3 D55141 Copyright © 2006 DEWALT The following are trademarks for one or more DEWALT...