Nilfisk-ALTO SR 1450 B-D SR 1450 B motor overheating SR 1450 B, Problem, Cause, Remedy, Check

USER MANUAL

PROBLEM	CAUSE	REMEDY
Low beam off	Blown fuses	Replace fuse
	Blown bulbs	Replace bulbs
	Open light switch	Replace switch
Horn off	Open horn switch	Replace switch
	Blown fuse	Replace fuse
	Horn filled with water	Overhaul horn
	Faulty horn	Replace horn
Battery fails to keep rated charge	No fluid in the battery	Restore level
	Shorted battery cell	Replace battery
	Overloaded motors	Check motor absorption
	Loose battery terminals	Check and tighten
Battery runs out quickly	Insufficient charge time setting	Set correct charge time
	Spent battery cells	Replace battery

SR 1450 B motor overheating (SR 1450 B)

CAUSE	CHECK	REMEDY
Overload	Current to the motor	Subject the motor to less strain
Insufficient air flow	Check suction/delivery openings	Clean or change shields or caps
	Fan rotation	Replace fan
Wrong voltage	Low battery voltage	Recharge batteries
	Low voltage to motor terminals	Check connections for proper tightening
	Faulty or badly installed bearing	Change bearings or change at every repair
		operation
Bearings
	Radial overload	Check stress and strain
	Dirt infiltration	Clean the motor inside
	Armature with shorted blackened winding	Replace. Use only original spares. Do not
		rewind.
Winding heating	High humidity	Clean and dry at 110°C
	Shorted coil or winding, blackened insulating	Replace. Use only original spares.
	material
	Loose inner connection	Check and tighten correctly
	Short-circuit between segments	Clean commutator and contact the
		manufacturer
	Poor contact or worn carbon brushes	Check or replace
Commutator heating	Improper carbon brush quality	Only original carbon brush and for 48 V
		voltages
	Excessive spring pressure	Recalibrate or change
	Dirty or damaged surface	Clean or rectify the commutator

14 33014811(1)2005-07 A