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 ..........................................................................................................................
6,16,17
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
Troubleshooting
Codes
CODE
POSSIBLE CAUSE
'POSSIBLE
SOLUTION
' pressure switch does not shut off m0t0r when compressor
Set the on/off
Switch t0 OFF, if the unit doeS not shut
reaches cut_0ut pressure
Off contact a DEWALT fact0iy service Ceniei 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.
3
Tube fittingS are n0t tight enough
Tighte_ fittings Wher e air can be heaid esCaPing. Check
:
fittings with soapy water solution. Do Not Overtighten,
17