Table of Contents
Advertisement
TROUBLESHOOTING GUIDE
CONDITION
MOTOR FAILS
TO ROTATE,
(NO NOISE IS
HEARD AT
ALL).
SUCTION POWER
IS TOO WEAK.
NOISE OR
VIBRATION.
AGITATOR DOES
NOT ROTATE.
CHECKPOINT
• Power source
(plug socket).
• Power cord.
• Motor continuity.
• Motor carbon brush is
in contact with rotor.
• ON/OFF switch continuity.
• Dust bag.
• Filters.
• Nozzle hose.
• Dust in motor fan.
• Carbon brushes.
• Agitator roller
bearing noise.
• Lower housing
agitator grooves.
• Belt.
METHOD OF INSPECTION
• Measure power source voltage at plug
socket by use of tester.
• Remove AC plug from the AC wall outlet.
Connect ohm-meter across both ends of
the power cord plug and operate the
ON/OFF switch. If the meter indicates
continuity, the AC cord, switch, motor
winding are OK.
• If no continuity is found, proceed as
follows:
Remove dust cover and the switch
cover, short across AC plug ends, open
the ON/OFF switch and read across
the black and white leads of the AC cord.
If continuity, cord is OK.
If no continuity, AC cord is open.
• Check continuity of motor.
• Remove noise suppressor and
check if there is gap between carbon
brushes and rotor.
• Remove switch cover, and check
continuity across switch terminals.
• Check quantity of dust accumulated in
dust bag.
• Check for dirty filter.
• Remove nozzle hose and check.
• Check dust accumulated in motor fan.
• Check uneven wear of carbon brushes.
• Hold bearing units in hand, and turn
agitator, check rolling noise the agitator
pulley section makes.
• Agitator should turn freely without
any drag or friction.
• Check condition of belt.
- 19 -
CAUSE/REMEDY
• Power source is fault if voltage
is lower than specified.
• Replace AC cord.
• If there is no continuity of motor
replace motor.
• If there is gap between carbon
brush and rotor, cause is
either dust accumulated in
brush holder or carbon brush
worn out. Adjust or replace.
• If there is no continuity between
both terminals, ON/OFF switch
must be defective.
• Replace dust bag if full. ( Paper)
Empty dust bag. (Cloth )
• Clean and/or Change Filters.
• If clogged, remove clog.
• Clean dust out of motor fan and
check filter condition.
• Replace carbon brushes. (Be sure
to replace both carbon brushes
at same time.)
• If noise is abnormal, agitator
end cap is defective.
Replace defective end cap.
• Lower housing is worn.
• Replace belt if necessary.
Advertisement
Table of Contents
