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15
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 D
EWALT 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
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
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1 Pressure switch does not shut off
motor when compressor reaches
cut-out pressure
Set the Auto/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.
3 Tube fittings are not tight enough Tighten fittings where air can be heard escaping. Check fittings with soapy water solution. Do
Not Overtighten.
4 Defective air tank Air tank must be replaced. Do not repair the leak.
WARNING: Risk of bursting. Do not drill into, weld or otherwise modify air tank or
it will weaken. The air tank can rupture or explode.
5 Leaking seals Contact a D
E
WALT factory service center or a D
E
WALT authorized service center.
6 Defective safety valve Operate safety valve manually by pulling on ring. If valve still leaks, it must be replaced.