DeWalt 5Z598C specifications Troubleshooting Chart, Symptom Possible Causes Corrective Action

Speedaire Operating Instructions and Parts Manual 5Z598C

Speedaire® Portable Air Compressor

ETroubleshooting Chart

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G	Performing repairs may expose voltage sources, moving parts, or compressed air sources.
L	Personal injury may occur. Prior to attempting any repairs unplug the power cord and bleed off

Iair pressure.

S

H Symptom Possible Causes Corrective Action

Excessive tank pressure – safety valve pops off

1.Pressure switch does not shut off motor when compressor reaches "cut-out" pressure

2. Pressure switch "cut-out" too high

1.Move the pressure switch lever to the OFF position. If the outfit doesn'tshut off, and the electrical contacts are welded together, replace the pressure switch If the contacts are good, check to see if the pin in the bottom of the pressure release valve is stuck. If it does not move freely, replace the valve

2.Return the outfit to a Service Center to check and adjust, or replace switch

Air leaks at fittings	Fittings are not tight enough		Tighten fittings where air can be heard
			escaping. Check fittings with soapy
			water solution. DO NOT OVER-TIGHTEN
Air leaks at check valve	Defective or dirty check valve		Defective check valve results in a constant
			air leak at the pressure release valve when
			there is pressure in the tank and the
			compressor is shut off. Remove and clean
			or replace check valve. DO NOT OVER-
			TIGHTEN
Air leaks at pressure switch release valve	1.	Defective pressure switch valve	1. Remove and replace the release valve
	2.	Defective check valve	2. A defective CHECK valve results in a
			constant air leak at the pressure release
			valve when there is pressure in the tank
			and the compressor is shutoff. Remove
			and clean or replace check valve. DO
			NOT OVER-TIGHTEN
Air leaks from air tank	Defective air tank		Air tank must be replaced. Do not repair
			the leak
				DO NOT DRILL INTO,
				WELD, OR OTHERWISE
			MODIFY AIR TANK OR IT WILL WEAKEN
Regulator knob – continuous air leak	Dirty or damaged regulator internal parts		Clean or replace regulator
Regulator will not shut-off air outlet

Pressure reading on the regulated pressure gauge drops when an accessory is used

It is normal for "some" pressure drop to occur

If there is an excessive amount of pressure drop when the accessory is used, adjust the regulator

NOTE: Adjust the regulated pressure under flow conditions (while accessory is being used)

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