DeWalt D55153R instruction manual Code Possible Cause Possible Solution

5135175-02,01.qxd 3/30/05 8:32 PM Page 13

Code	Possible Cause	Possible Solution
1.	Clogged or dirty inlet and/or discharge line filter.	Clean or replace air inlet and/or discharge line filter.
2.	Lubricant viscosity too low.	Drain existing lubricant and refill with DEWALT Synthetic lubricant.
3	Lubricant viscosity too high.	Drain existing lubricant and refill with DEWALT Synthetic lubricant.
4.	Lubricant level too low.	Add lubricant to crankcase to proper level.
5.	Detergent type lubricant being used.	Drain existing lubricant and refill with DEWALT Synthetic lubricant.
6.	Extremely light duty cycles.	Run unit for longer duty cycles.
7.	Air leaks in air discharge piping.	Check tubing and connections.
8.	Compressor pump check valve is loose, broken,	Inspect valve. Clean or replace as required.
	or has carbon buildup.
9.	Carbon build up on top of compressor pump piston.	Clean piston. Repair or replace as required.
10	Piston rings damaged or worn	Install new rings.
	(broken, rough, or scratched). Excessive end gap or
	side clearance. Piston rings not seated, stuck
	in grooves, or end gaps not staggered.
11	Cylinder or piston scratched, worn, or scored.	Repair or replace as required.
12	Worn connecting rod, piston pin, or crankpin bearings.	Inspect all. Repair or replace as required..
13	Crankshaft seal worn or crankshaft scored.	Replace seal or crankshaft assembly.
14	Extremely dusty atmosphere.	Install more effective filtration or relocate the compressor.
15	Ambient temperature too low.	Relocate compressor to warmer environment. Ensure that DEWALT
		Synthetic oil is in crankcase.
16	Worn cylinder finish.	Deglaze cylinder with 180 grit flex-hone
17	Power cord not plugged in.	Plug cord into grounded outlet.
18	Pressure switch is in OFF position.	Move switch to ON/AUTO position.
19	Motor thermal overload switch has tripped.	Turn the compressor off, wait until motor is cool, then press motor
		thermal overload button (located on motor) firmly until a click is heard.
20	Fuse blown or circuit has tripped.	Replace fuse or reset circuit breaker. Check for proper fuse. Use only
		“Fusetron” type T fuses. Check for low voltage conditions. Disconnect
		any other electrical appliances from circuit or operate the compressor
		on its own branch circuit.
21	Wrong gage wire or length of extension cord.	If possible, eliminate extension cord. Check the chart on page 7 for
		proper gage wire and cord length.

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