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23
English
Troubleshooting Codes
CODE
POSSIBLE CAUSE
POSSIBLE SOLUTION
1
Unloader valve does not release pressure
when air tank reaches
blow-off
pressure
Unloader valve must be replaced. Contact a D
E
WALT factory service center
or a D
E
WALT authorized service center.
2
Fittings are not tight
Tighten fittings where air can be heard escaping. Check fittings with soapy
water solution. DO NOT OVERTIGHTEN.
3
Defective unloader valve
Turn off engine, rotate manual lock unloader lever to the
closed
perpendicular
position. If air leaks out of air tank through unloader valve, replace unloader
valve.
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.
7
Prolonged excessive use of air
Decrease amount of air usage.
8
Compressor is not large enough for acces-
sory
Check the accessory air requirement. If it is higher than the SCFM or pres-
sure supplied by your air compressor, a larger compressor is needed to
operate accessory.
9
Hole in air hose
Check and replace air hose, if required.
10
Unloader valve restricted
Remove, clean or replace.
11
Unit operating in damp or humid conditions
Move unit to a dry well ventilated area.
12
Restricted air intake filter
Clean or replace air intake filter.