DeVillbiss Air Power Company MG3-OLPORT-3A Storage of Compressor Outfit, Troubleshooting Guide

STORAGE OF COMPRESSOR OUTFIT

1.Review the "Maintenance" section on the preceding pages and perform scheduled maintenance as necessary. Drain the water from the air tank.

2.Set the ON/AUTO-OFF switch to the "OFF" position, and unplug the unit.

3.Remove any air tool or accessory.

4.Protect the electrical cord and air hose from damage (such as being stepped on or run over). Wind them loosely around the outfit handle.

5.Store the compressor in a clean and dry location.

TROUBLESHOOTING GUIDE

PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE COMPRESSOR AND BLEED OFF ALL TANK AIR PRESSURE.

PROBLEM	CAUSE	CORRECTION
Excessive tank pressure - safety valve	Pressure switch does not shut off motor	Move the pressure switch lever to the
pops off.	when compressor reaches “cut-out”	“OFF” position. If the outfit doesn’t shut
	pressure.	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
	Pressure switch “cut-out” too high.	freely, replace the valve.
		Return the outfit to an Authorized War-
		ranty Service Center to check, remove
		or replace switch.
Air leaks at fittings.	Tube fittings are not tight enough.	Tighten fittings where air can be heard
		escaping. Check fittings with soapy wa-
		ter solution. DO NOT OVER-TIGHTEN.
Air leaks at or inside check valve.	Defective or dirty check valve.	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 shut off. Remove
		and clean or replace check valve. DO
		NOT OVER-TIGHTEN.
Air leaks at pressure switch	Defective pressure switch release valve.	Remove and replace the release valve.
release valve.	Defective check valve.	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 shut off. Remove
		and clean or replace check valve. DO
		NOT OVER-TIGHTEN.
Air leaks in air tank or at air tank welds.	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. THE TANK
		CAN RUPTURE OR EXPLODE.
Air leak from safety valve.	Possible defect in safety valve	Operate safety valve manually by pull-
		ing on ring. If valve still leaks, it must be
		replaced.

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