Troubleshooting Guide; Troubleshooting Codes - DeWalt D55140 Guide D'utilisation

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This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance

personnel can perform some corrective actions, and others may require the assistance of a qualified D

Problem

Excessive air tank pressure-safety valve pops off ......................................................................1,2

Air leaks .................................................................................................................................... 3

Air leaks in air tank or at air tank welds .................................................................................... 4

Air leaks between head and valve plate .................................................................................... 5

Air leaks 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

Motor will not run ....................................................................................................................... 14,15,16,17,18,19

CODE

POSSIBLE CAUSE

Pressure switch does not shut off motor when compressor

reaches cut-out pressure

Pressure switch cut-out too high

Tube fittings are not tight enough