DeWalt D55150 Guide D'utilisation page 16

5135175-02,01.qxd 3/30/05
Code Possible Cause
22 Tank air pressure exceeds pressure switch
"cut-in" setting.
23 Pressure relief valve on pressure switch has
not unloaded pump head pressure.
24 Defective motor, motor capacitor, or pressure switch.
25 Pressure switch does not shut off motor when
air compressor reaches "cut-out" pressure.
26 Air compressor is not large enough for air required.
27 Defective pressure switch.
28 Defective safety relief valve.
29 Excessive air tank pressure.
30 Defective gaskets.
31 Fittings not tight enough.
32 Defective or rusted air tank
33 Pressure regulator knob not turned to high enough
pressure or defective pressure regulator.
34 Hose or hose connections are too small or too long.
35 Possible defective reed valve.
36 Air compressor on uneven surface.
37 Crankcase overfilled with oil.
38 Plugged oil dipstick vent.
39 Water in oil due to condensation.
40 Condensation in air tank caused by high level of
atmospheric humidity.
41 Compressor located in damp or humid location.
8:32 PM Page 14
Possible Solution
Set pressure switch in the "Auto" position. The motor will
automatically start when air tank pressure drops below "cut-in"
pressure.
Drain tanks. If problem persists,
contact D WALT customer service at 1-800-4-DEWALT.
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Contact D WALT Customer Service at 1-800-4-DEWALT.
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Move the pressure switch to the OFF position.
If the motor does not shut off, unplug the air compressor. If the
electrical contacts are welded together, replace the pressure
switch.
Check accessory air requirement. If higher than the CFM or
pressure supply of the air compressor, then larger air compressor
is required.
Replace the pressure switch.
Operate safety relief valve manually by pulling on test ring. If it
still leaks, replace the safety relief valve.
Defective pressure switch. Replace the pressure switch.
Replace and torque head bolts to 6 to 7 ft lbs.
Warning: Drain air before tightening. Tighten fittings so air can
not be heard escaping. Check joint with soap solution. Do not
overtighten
Air tank must be replaced. Do not attempt to repair air tank.
Adjust pressure regulator knob to proper setting or replace.
Replace with larger hose or connectors.
Remove pump head and inspect valve plate and reed valve.
Clear or replace valves as required.
Do not incline the air compressor more than 10˚ in any direction
while running.
Drain oil. Refill to proper level with D
Clean dipstick vent.
Drain oil. Refill to proper level with D
Drain air tank after every use. Drain air tank more often in humid
weather and use an air line filter.
Relocate the compressor.
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WALT synthetic oil.
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WALT synthetic oil.
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