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English
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1 Fittings are not tight Tighten fittings where air can be heard escaping. Check fittings with
soapy water solution. DO NOT OVERTIGHTEN.
2 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.
3 Leaking seals Contact a D
eWALT factory service center or a D
e
WALT authorized ser-
vice center.
4 Defective safety valve Operate safety valve manually by pulling on ring. If valve still leaks, it
must be replaced.
5 Prolonged excessive use of air Decrease amount of air usage.
6 Compressor is not large enough for accessory Check the accessory air requirement. If it is higher than the SCFM
or pressure supplied by your air compressor, a larger compressor is
needed to operate accessory.
7 Hole in air hose Check and replace air hose, if required.
8 Unit operating in damp or humid conditions Move unit to a dry well ventilated area.
9 Restricted air intake filter Clean or replace air intake filter.
10
Extremely light duty cycles Run unit for longer duty cycles. It is recommended to run at high throttle
50-75% of the run time and idle for 25% of the run time.
11
Piston rings damaged or worn Contact a D
e
WALT factory service center or a D
e
WALT authorized
service center.
12
Cylinder or piston damaged or worn Contact a D
e
WALT factory service center or a D
e
WALT authorized
service center.
13
Compressor cylinder finish worn Contact a DeWALT factory service center or a D
e
WALT authorized
service center.
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