Troubleshooting Codes - DeWalt D55394 Instruction Manual

CoDE PossIBlE CAusE
1 Unloader valve does not release pressure when
air tank reaches cut-out pressure
2 Fittings are not tight
3 Defective unloader valve
4 Defective air tank
5 Leaking seals
6 Defective safety valve
7 Prolonged excessive use of air
8 Compressor is not large enough for accessory Check the accessory air requirement. If it is higher than the SCFM or
9 Hole in air hose
10 Unloader valve restricted
11 Unit operating in damp or humid conditions
12 Restricted air intake filter
13 Loose belt
14 Pump or motor mount ing nuts are loose
15 Motor overload protection switch has tripped

Troubleshooting Codes

PossIBlE solutIon
Unloader valve must be replaced. Contact a D
or a D WALT authorized service center.
e
Tighten fittings where air can be heard escaping. Check fittings with soapy
water solution. DO NOT OVERTIGHTEN.
Replace.
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.
Contact a D WALT factory service center or a D
e
center.
Operate safety valve manually by pulling on ring. If valve still leaks, it must
be replaced.
Decrease amount of air usage.
pressure supplied by your air compressor, a larger compressor is needed
to operate accessory.
Check and replace air hose, if required.
Remove, clean or replace.
Move unit to a dry well ventilated area.
Clean or replace air intake filter.
Check belt tension, see Adjusting Belt tension under Maintenance.
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).
bursting. Excessive vibration could weaken the air tank and cause it to
rupture or explode. Mounting screws must be kept tightened.
See Motor overload under Features.
22
WALT factory service center
e
WALT authorized service
e
WARNING: Risk of