Troubleshooting Guide - DeWalt D55250 Guide D'utilisation

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 WALT technician
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or your dealer.
Problem Code
Abnormal piston ring or cylinder wear ............................................................................................2,5,6,11,12,14
Unit does not come up to speed; unit is slow to come up to speed................................................3,4,8,15,17,20,21,25
Unit runs excessively hot ................................................................................................................1,2,5,9,14,17
Excessive noise during operation ..................................................................................................3,4,5,8,9,10,11,12,16,21,25,26
Excessive starting and stopping ......................................................................................................3,8,17,20,21,25,30
High oil consumption........................................................................................................................1,4,6,10,11,12,13,16,25,27,28
Knocking or rattling ..........................................................................................................................2,5,6,9,19,11,12,16,25,26
Moisture in crankcase or "milky" appearance in petroleum lubricant or rusting in cylinders ..........6,7,10,11,12,16,20,21,25,29,31
Oil in discharge air (oil pumping) ....................................................................................................2,6,8,10,11,16,27
Oil leaking from shaft seal................................................................................................................13
Safety relief valve "pops" ................................................................................................................18,19
Compressor will not run or restart....................................................................................................32,35
Air leaks at pump ............................................................................................................................20
Air leaks at fittings ............................................................................................................................21
Air leaks from tank ..........................................................................................................................22
Insufficient pressure at air tool or accessory ..................................................................................1,3,17,23,24
Air compressor not making enough air............................................................................................1,3,4,8,10,11
Moisture in discharge air..................................................................................................................30,31
Compressor stalls ............................................................................................................................34
Receivers are not filling with air ......................................................................................................35
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