Lincoln Electric IM438-B Problems Symptoms, Possible Areas Of Misadjustmentss, Troubleshooting

E-2	TROUBLESHOOTING	E-2
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF MISADJUSTMENTS(S)

RECOMMENDED

COURSE OF ACTION

Cooler does not operate with power	a. Power cord unplugged.	a. Plug in power cord.
switch on.	b. No power at outlet.	b. Check outlet circuit breaker.
(Switch pushed to	c. Power cordset damaged.	c. Repair damaged cord or order
"1" position.)		new cordset.
	d. Unit too hot. Thermal protector	d. Allow unit to cool. Relocate unit
	tripped.	away from source of heat.
	e. Water lines blocked or crimped.	e. Clear blockage in hose. Avoid
		kinking or putting sharp bends in
		water lines.
	f. Unit is used in a demand system	f. Repair water valve or solenoid.
	and water valve or solenoid dam-
	aged.
	g. Leak in gun or water hoses.	g. Repair leak.
	h. Reservoir empty.	h. Fill reservoir.
	I. Power switch faulty.	I. Replace power switch.
	j. Solenoid valve is closed.	j. Pull trigger on welding gun to open
		solenoid valve.
	k. Female quick-connect fittings are	k. Connect all quick connect fittings
	not connected to male fittings.	to their mating parts.
Power switch blinks or flickers while	a. Water lines partially blocked or	a. Clear blockage in hose. Avoid
coolant is flowing. (Continuous use,	obstructed.	kinking or putting sharp bends in
NO Water Valve or Solenoid in the		water lines.
system.)	b. Internal hose or heat exchanger is	b. Carefully clear blockage. Clean all
	blocked.	hoses and the reservoir.
	c. Restriction is too high for the	c. Use the Cooler 20-I for MIG appli-
	Cooler being used.	cations. Cooler 10-I can be used
		for either MIG or TIG applications.
Using a water valve or solenoid and	a. Water lines partially blocked or	a. Clear blockage in hose. Avoid
power switch blinks or flickers while	obstructed.	kinking or putting sharp bends in
coolant is flowing or when flow is		water lines.
stopped.	b. Water valve or solenoid failure.	b. Repair or replace water valve or
		solenoid.
	c. Internal hose or heat exchanger is	c. Carefully clear blockage. Clean all
	blocked.	hoses and the reservoir.
	d. Restriction is too high for the	d. Use the Cooler 20-I for MIG appli-
	Cooler being used.	cations. Cooler 10-I can be used
		for either MIG or TIG applications.
Using water valve or solenoid and	a. Leak in gun or water hoses.	a. Repair leak.
power switch light turns on and off	b. Demand system stress. System	b. Turn power switch off when not in
when not in use.	not used for long period of time	use. (Power switch pushed to
	with Cooler left on. (Power switch	“O”). DO NOT LEAVE POWER
	pushed to “”).	ON WHEN COOLER IS NOT IN
		USE FOR A LONG PERIOD OF
		TIME.
Internal water leak.	a. Hose clamp loose on one of inter-	a. Tighten or replace hose clamp.
	nal hoses.
	b. Internal hose punctured.	b. Replace punctured hose with new
		hose.
	c. Heat exchanger leaking.	c. Replace heat exchanger.
	d. Pump experiencing “soft” failure	d. Repair pump with S20095-1 or
	and leaking around plastic hous-	S20095-3 Pump Replacement Kit
	ing of pump head.	or S20095-2 Pump Rebuild Kit.
		e. Replace pump head with S20095-
	e. Pump head cracked.	1 or S20095-3 Pump
		Replacement Kit.

MAGNUM COOLER 10-I & 20-I