Troubleshooting Codes - DeWalt D55270 Guide D'utilisation

CoDe PossIble CAuse
1 Unloader valve does not release pressure when air tank
reaches blow-off pressure
 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
9 Hole in air hose
10 Unloader valve restricted
11 Unit operating in damp or humid conditions
1 Restricted air intake filter

Troubleshooting Codes

PossIble soluTIon
Unloader valve must be replaced. Contact a D
service center or a D
Tighten fittings where air can be heard escaping. Check fit-
tings with soapy water solution. DO NOT OVERTIGHTEN.
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.
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
authorized service center.
Operate safety valve manually by pulling on ring. If valve still
leaks, it must be replaced.
Decrease amount of air usage.
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.
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.

WALT authorized service center.
e
WALT factory service center or a D
e
WALT factory
e
WALT
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