Nilfisk SWEEPER SR 1450 B-D Manuel D'utilisation page 60

USER MANUAL
PROBLEM
Low beam off
Horn off
Battery fails to keep rated charge
Battery runs out quickly
SR 1450 B motor overheating (SR 1450 B)
CAUSE
Overload
Insufficient air flow
Wrong voltage
Bearings
Winding heating
Commutator heating
14
CAUSE
Blown fuses
Blown bulbs
Open light switch
Open horn switch
Blown fuse
Horn filled with water
Faulty horn
No fluid in the battery
Shorted battery cell
Overloaded motors
Loose battery terminals
Insufficient charge time setting
Spent battery cells
CHECK
Current to the motor
Check suction/delivery openings
Fan rotation
Low battery voltage
Low voltage to motor terminals
Faulty or badly installed bearing
Radial overload
Dirt infiltration
Armature with shorted blackened winding
High humidity
Shorted coil or winding, blackened insulating
material
Loose inner connection
Short-circuit between segments
Poor contact or worn carbon brushes
Improper carbon brush quality
Excessive spring pressure
Dirty or damaged surface
REMEDY
Replace fuse
Replace bulbs
Replace switch
Replace switch
Replace fuse
Overhaul horn
Replace horn
Restore level
Replace battery
Check motor absorption
Check and tighten
Set correct charge time
Replace battery
REMEDY
Subject the motor to less strain
Clean or change shields or caps
Replace fan
Recharge batteries
Check connections for proper tightening
Change bearings or change at every repair
operation
Check stress and strain
Clean the motor inside
Replace. Use only original spares. Do not
rewind.
Clean and dry at 110°C
Replace. Use only original spares.
Check and tighten correctly
Clean commutator and contact the
manufacturer
Check or replace
Only original carbon brush and for 48 V
voltages
Recalibrate or change
Clean or rectify the commutator
33014811(1)2005-07 A