DeWalt D55250 Guide D'utilisation page 15

Code Probable Cause
18 Possible defective safety/relief valve.
19 Excessive air tank pressure.
20 Defective gaskets.
21 Fittings not tight enough.
22 Defective or rusted air tank
23 Pressure regulator knob not turned to high enough pressure
or defective pressure regulator.
24 Hose or hose connections are to small or long.
25 Possible defective (reed) valve.
26 Air compressor on uneven surface.
27 Crankcase overfilled with oil.
28 Plugged oil dipstick vent.
29 Water in oil due to condensation.
30 Condensation in air tank caused by high level of
atmospheric humidity.
31 Unit located in damp or humid location.
32 Engine oil too low. Low oil shut off is on.
33 Manual lock on pilot valve is in the loaded position.
34 Engine idle speed too low.
35 Engine problem.
Probable Solution
Operate safety relief valve manually by pulling on test ring. If it still
leaks, replace it.
Adjust the pilot valve. If the problem still exists, replace pilot valve.
Replace and torque head bolts to 6 - 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.
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.
Add engine oil.
Move manual lock into an in-line position.
Increase idle speed.
See "Taking care of unexpected problems" in engine owners
manual.
12
WALT synthetic oil.
E
WALT synthetic oil.
E