Troubleshooting Guide; Troubleshooting Codes - DeWalt D55151 Instruction Manual

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,
Air leaks .................................................................................................................................... 
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 .......................................................................................................................... 6,16,17
Pressure reading on the regulated pressure gauge drops when an accessory is used ........... 7
Compressor is not supplying enough air to operate accessories.............................................. 8,9,10,11,1,15
Regulator knob has continuous air leak .................................................................................... 1
Regulator will not shut off air outlet ........................................................................................... 1
Moisture in pump crankcase ...................................................................................................... 14,18
Motor will not run ....................................................................................................................... 11,19,0,1,,,4,5,6
CoDE possIBlE CAusE
1 Pressure switch does not shut off motor when compressor
reaches cut-out pressure
 Pressure switch cut-out too high

Troubleshooting Guide

Troubleshooting Codes

possIBlE solutIon
Set the On/Off switch to OFF, if the unit does not shut
off contact a D
authorized service center.
Contact a D
authorized service center.
19
WALT technician or your dealer.
e
Code
WALT factory service center or a D
e
WALT factory service center or a D
e
WALT
e
WALT
e