Dewalt DXCMH1393075 Instruction Manual - Page 27

Possible Cause, Possible Solution

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English CODE POSSIBLE CAUSE 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 12 Restricted air intake filter 13 Loose belt POSSIBLE SOLUTION 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 other- wise modify air tank or it will weaken. The air tank can rupture or explode. Contact a DeWALT factory service center or a DeWALT 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. Check belt tension, see Adjusting Belt Tension under Maintenance. 27

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27
English
CODE
POSSIBLE CAUSE
POSSIBLE SOLUTION
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 other-
wise 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.