Lincoln Electric DX450 specifications Welding without a control cable

E-3	TROUBLESHOOTING	E-3
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Engine shuts down while under a	1. High radiator coolant tempera-
load.	ture. Reduce load if it is exceed-
	ing machine rating. Add coolant
	to system if low. Clean fins on
	radiator if dirty. Tighten fan belt if
	loose. Remove objects blocking
	or close to intake openings on
	both sides of base and exhaust
	end (case back).
Engine runs rough.	1. Dirty fuel or air filters. Inspect and
	clean/replace filters as needed.
	Inspect and clean/replace filters
	as needed.
	2. Water in fuel. If water found in
	tank. Empty fuel tank and refill
	then purge fuel lines.
Battery does not stay charged.	1. Faulty battery. Replace.
Engine alternator trouble light is on	2. Loose connections at battery or
while machine is running.	alternator. Clean and tighten con-
	nections.
	3. Faulty engine alternator or charg-
	er module. Consult authorized
	Engine Service Shop.
Engine will not idle down to low	1. Idler switch in High idle position.
speed.	Set switch to Auto.
	2. External load on welder or auxil-
	iary power. Remove all external
	loads.
	3. Faulty Engine Control Unit or
	Control P.C. board.
Engine will not go to high idle when	1. Poor work lead connection to
attempting to weld.	work. Make sure work clamp is
	tightly connected to clean base
	metal.
	2. "Contactor" switch is in wrong
	position. Set to "Welding On" when
	welding without a control cable.
	Refer to Operations chapter for prop-
	er use of this switch.
	3. Faulty Engine Control Unit or
	Control P.C. board.

If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Authorized Field Service Facility.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

DX450 (RED-D-ARC)