Troubleshooting Guide; Troubleshooting Codes - DeWalt D55151 Guide D'utilisation

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
or your dealer.
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 ......................................................................................................................... 6,16,17
Pressure reading on the regulated pressure gauge drops when an accessory is used ...... 7
Compressor is not supplying enough air to operate accessories ......................................... 8,9,10,11,12,15
Regulator knob has continuous air leak.................................................................................. 13
Regulator will not shut off air outlet ........................................................................................ 13
Moisture in pump crankcase ................................................................................................... 14,18
Motor will not run ..................................................................................................................... 11,19,20,21,22,23,24,25,26
CODE POSSIBLE CAUSE
1 Pressure switch does not shut off motor when compressor
reaches cut-out pressure
2 Pressure switch cut-out too high
3
Tube fittings are not tight enough

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.
Tighten fittings where air can be heard escaping. Check
fittings with soapy water solution. Do Not Overtighten.
20
Code
WALT factory service center or a D
e
WALT factory service center or a D
e
WALT technician
e
WALT
e
WALT
e