Multiquip BLW-400SSW operation manual Broken pre-heat circuit? Check pre-heat circuit

Table of Contents

BLW-400SSW — TROUBLESHOOTING (ENGINE)

TABLE 15. ENGINE TROUBLESHOOTING (PART 3)

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
	Broken pre-heat circuit?	Check pre-heat circuit.
Engine fails to start and starter
	No fuel?	Add fuel.
rotates.
	Defective wiring?	Check wiring.
	Clogged fuel strainer?	Clean or replace.
Engine starts and remains at low
	Clogged air cleaner?	Clean or replace.
speed.
	Disconnected wiring?	Check and repair wiring.
Starter does not run.	Battery discharged?	Charge battery.
	Starter malfunctioning?	Repair or replace.
	Key switch malfunctioning?	Repair or replace.
	Wiring disconnected?	Connect wiring.
	Fuse F5 burned out?	Replace fuse.
	No voltage present in AC power	Replace rectifier (RE1).
	source?
	Defective rotor?	Replace rotor.
Engine speed rises and no voltage
	Defective voltmeter?	Replace voltmeter.
is present in AC power source.
	Disconnected wiring?	Check and repair wiring.
	Layer short-circuit in armature	Replace armature.
	winding?
Engine speed rises and AC power	Defective circuit breaker (protector)?	Replace circuit breaker (protector).
voltage is too low or cannot be	Layer short-circuit, broken wires in	Repair or replace armature.
used.
	armature winding?
Engine speed rises and battery	Defective engine regulator?	Replace regulator.
discharges too soon.	Defective wiring?	Repair or replace wiring.
Engine speed rises and engine	Defective alternator?	Repair or replace alternator.
seems overloaded.	Damaged alternator bearing?	Replace alternator bearings.
Engine starts and "Idle Control
Switch" is in OFF position. Engine	Bad engine installation?	Repeat installation of engine.
speed rises and engine has large
vibrations. Overloads.
Engine starts and "Idle Control	Loose engine parts?	Check all engine parts for tightnes.
Switch" is in OFF position. Engine
speed rises and engine has	Defective alternator?	Check alternator for damaged bearing or loose
abnormal noise.		clamping bolts.
	Defective enclosure?	Check enclosure bolts for tightness.
Engine starts and "Idle Control	Defective idle control device?	Repair or replace idle control device.
Switch" is in OFF position. Engine
speed rises and remains at high	Defective idle control switch?	Replace idle control switch.
speed when Idle Control switch is
placed in the ON position.	Defective solenoid?	Replace solenoid.
	Defective relay?	Replace relay.

PAGE 44 — BLW-400SSW- WELDER/AC GENERATOR — PARTS & OPERATION MANUAL — REV. #1 (06/15/01)