DeWalt D55168 - Troubleshooting Guide and Codes; Troubleshooting Overview

Troubleshooting Guide
This section provides a listof 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 DEWALT technician or your dealer.
Problem Code
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, 22
Regulator knob has continuous air leak .................................................................................... 13
Regulator will not shut off air outlet ........................................................................................... 13
Motor will not run ....................................................................................................................... 6, 14, 15, 16, 17, 18, 19, 20
Squealing Sound ....................................................................................................................... 21
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
Pressure switch d0eS not shut 0ff m0tor when if the Unit doeS not shut 0ff €ontaCt
compressor reaches cut:out pressure a DEWALT factory service center or a DEWALT authorized service
. center:
2 Pressure switch cut-out too high Contact a DEWALT factory service center or a DEWALT authorized
service center.
Tube fittings aie not Tighten fitt ngs where air Canbe heard esCapingl check f ttingS
'. with soapy water solution. Do Not Overtighten,
18