21
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 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.
Summary of Contents for DXCMTA5090412
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