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22
English
Troubleshooting Codes
CoDE
PossIBlE CAusE
PossIBlE solutIon
1
Unloader valve does not release pressure when
air tank reaches
cut-out
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
Replace.
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 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.
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.
13
Loose belt
Check belt tension, see
Adjusting Belt tension
under
Maintenance.
14
Pump or motor mount ing nuts are loose
Torque pump mounting nuts to 18– 22 ft–lbs (24.4– 29.8 Nm). Torque motor
mounting nuta to 18– 22 ft–lbs (24.4– 29.8 Nm).
WARNING:
Risk of
bursting. Excessive vibration could weaken the air tank and cause it to
rupture or explode. Mounting screws must be kept tightened.
15
Motor overload protection switch has tripped
See
Motor overload
under
Features
.