BENDIX AD-IP INTEGRAL PURGE AIR DRYER manual AD-IPAIR Dryer Troubleshooting Chart

AD-IP™AIR DRYER TROUBLESHOOTING CHART (Continued)

	SYMPTOMS	CAUSE	REMEDY
8.	Desiccant material being	A. This symptom is almost	A. See Causes and Remedies for Symptoms 1, 2,
	expelled from air dryer	always accompanied by	3, 4 and 5.
	purge valve exhaust	one or more of
	(may look like whitish	Symptoms 1, 2, 3, 4 and
		5. See related causes for
	liquid or paste or small
		these symptoms above.
	beads.)
	- OR -
		B. Air dryer not securely	B. Vibration should be held to minimum. Add
	Unsatisfactory desiccant
		mounted. (Excessive	bracket supports or change air dryer mounting
	life.	vibration.)	location if necessary.
		C. Malfunctioning or	C. Replace desiccant cartridge assembly.
		saturated desiccant
		cartridge.
		D. Compressor passing	D. Check for proper compressor installation; if
		excessive oil.	symptoms persist, replace compressor.
		E. Desiccant cartridge not	E. Check the torque on the desiccant cartridge
		assembled properly to	to end cover attachment. Refer to assembly
		end cover. (Loose	section of this data sheet.
		attachment)
9.	“Pinging” noise	A. Single cylinder	A. A slight “pinging” sound may be heard during
	excessive during	compressor with high	system build up when a single cylinder
	compressor loaded	pulse cycles.	compressor is used. If this sound is deemed
	cycle.		objectionable, it can be reduced substantially
			by increasing the discharge line volume.
			This can be accomplished by adding an
			additional four feet of discharge line or adding a
			90 cubic inch reservoir between the compressor
			and the AD-IP™air dryer. IMPORTANT: Do not
			exceed the line lengths requirements specified
			in this manual.
10. Constant seepage of air		A. Defective check valve	A. Refer to Remedy C, Symptom #1.
	at air dryer purge valve	assembly in AD-IP™air
	exhaust (non-charging	dryer end cover.
	mode.)
		B. Leaking Turbo Cutoff	B. Repair or replace purge valve assembly.
		valve.
		C. Leaking purge valve	C. Repair or replace purge valve assembly.
		control piston o-ring.
11. The air dryer purge		A. Compressor fails to	A. Faulty governor installation; no air line from
	piston cycles rapidly in	“unload”.	governor to compressor or line is kinked or
	the compressor		restricted. Install or repair air line.
	unloaded (non-
	compressing) mode.

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