Use and Care Manual

19
English
Troubleshooting Guide
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 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 .........................................................................................................................6,16,17
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
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1 Pressure switch does not shut off motor when compres-
sor reaches cut-out pressure
Set the On/Off switch to OFF, if the unit does not shut off
contact a D e WALT factory service center or a D e WALT
authorized service center.
2
Pressure switch cut-out too high
Contact a D e WALT factory service center or a D e WALT
authorized service center.