LG V-C7142NT Service Manual ▷ View online
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SAFETY PRECAUTIONS
BEFORE OPERATING THIS VACUUM CLEANER, READ THIS SERVICE MANUAL THOROUGHLY,
AND OBSERVE EACH POINT CAREFULLY.
AND OBSERVE EACH POINT CAREFULLY.
3828Fi5873A
1. Motor filter(Air Cleaner)
1) This filter is reusable.
2) Never use the vacuum cleaner without filter.
It may damage the motor.
3) When the light of body is on, wash the motor filter
with water and brush.
4) Even if the light is not on, wash the motor filter at
least once 6 months.
NOTE :
Reusing of the motor filter.
Never wash the filter in a washing machine or in a
dishwasher.
dishwasher.
Never use hot water for washing the filter.
Reuse the filter after drying it completely in the
shade for a day.
shade for a day.
Do not dry near fire or direct sunray.
2. Exhaust filter(Washable HEPA filter)
1) This filter is reusable HEPA filter.
2) For clean air, theis filter must be assembled.
3) Wash the exhaust filter with water once a year.
4) When the light of body is on, wash the exhaust filter with
water.
NOTE :
Reusing of the exhaust filter.
Never wash the filter in a washing machine or in a
dishwasher.
dishwasher.
Never use hot water for washing the filter.
Reuse the filter after drying it completely in the
shade for a half day.
shade for a half day.
Do not dry near fire or direct sunray.
Do not brush the filter. This will cause permanently
damage allowing dust to by-pass the filter.
damage allowing dust to by-pass the filter.
3. Avoid suction such materials as :
1) Liquid or wet dust :
Clogs the ventilation holes, reduces the suction
power significantly and harms the motor.
power significantly and harms the motor.
2) Inflammable liquids such as benzene, alcohol or
solvents.
3) Burning objects such as cigarette butts.
4) Bulky objects such as vinyl, paper etc.
5) Sharp objects such as needles, pins, metal, glass
particles etc.
4. Attachments
Nozzle : For cleaning wooden floor, the room floor
and carpet.
Crevice Tool : For cleaning any crevice, inside corners of
window frames. (However, do not use the
crevice tool more than 20 minutes.)
crevice tool more than 20 minutes.)
Dusting Brush: For delicate vacuuming of fabrics on the
furniture, curtains, etc.
Upholstery Nozzle: For vacuuming the dust on the
upholstery.
However, do not use the crevice tool more than 20
minutes because it may cause harm to the motor.
minutes because it may cause harm to the motor.
5. Close supervision is necessary when this
vacuum cleaner is used by or near children.
Children’s carelessness may cause damage
to the cleaner or injure persons.
Children’s carelessness may cause damage
to the cleaner or injure persons.
6. Air exhausted from the vacuum cleaner is
normally warm. But if extraordinarily hot air
is exhausted, check if the telescopic tube,
hose or clean filter is clogged or not.
is exhausted, check if the telescopic tube,
hose or clean filter is clogged or not.
7. Electric shock could occur if used outdoors
or on wet surfaces.
1. Motor exchange
1) Separate the Body Cover and Body Base by
unfastening the screws.
2) After disconnecting the lead wires, replace the old
motor with a new one.
2. In case of exchanging other parts. refer
to the exploded view.
CAUTIONS
BEFORE ATTEMPTING TO SERVICE OR ADJUST ANY PART OF THE VACUUM CLEANER, DISCONNECT
THE ELECTRICAL POWER SUPPLY CORD FROM THE WALL OUTLET.
THE ELECTRICAL POWER SUPPLY CORD FROM THE WALL OUTLET.
3828Fi5873A
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CHECKING
CHECK THE POWER
SOURCE
SOURCE
The fuse is melt down in the
coverknife switch.
coverknife switch.
Exchange the fuse.
Poor plug insertion
Insert again.
Power cord cut
Repair or exchange.
Interior lead wire cut
Exchange the lead wire.
Motor(stator, armature) coil
cut or damaged.
cut or damaged.
Exchange the motor.
Poor contact carbon brush
defaced.
defaced.
Exchange or repair the motor.
Poor switch contact point
(HT/HE)
(HT/HE)
Exchange the switch.
Motor armature cut.
Exchange the motor.
Ball bearing defacement
Exchange the motor.
Impeller hindrance
(Caused by foreign matters)
(Caused by foreign matters)
Remove the foreign matters.
CAUSE
SOLUTION
TROUBLE SHOOTING GUIDE
1. SWITCH ON BUT MOTOR DOSE NOT TURN.
2. SWITCH ON, MOTOR DOES NOT TURN BUT BUZZES.
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3828Fi5873A
Carbon brush defaced
Exchange the carbon brush
or the motor.
or the motor.
Motor armature cut
Exchange the motor.
Foreign matters attached to
the impeller
the impeller
Remove the foreign matters.
Low voltage
Inquire to the power utility
company.
company.
Hose and extension wands
are clogged with foreign
matters.
are clogged with foreign
matters.
Remove the foreign matters
in the hose or extension
wands.
in the hose or extension
wands.
The slide knob on the handle is
opened or the control knob is
located on weak position.
opened or the control knob is
located on weak position.
Close the slide knob by sliding it.
Regulate the knob.
Regulate the knob.
The motor filter is clogged.
Clean the motor filter.
The exhaust filter is clogged.
Exchange the exhaust filter.
Poor connection
Repair the slide volume of hose
or triac of PWB assembly
or triac of PWB assembly
Poor switch
(NT/NE)
(NT/NE)
Low rotation speed
Motor turns normally,
but suction power is weak.
but suction power is weak.
Exchange the switch.
3. SWITCH OFF BUT MOTOR TURNS
4. WEAK SUCTION POWER
3828Fi5873A
Loose parts
Secure firmly.
Unbalanced motor assembly
Exchange or repair the motor.
Foreign matters are attached
to the impeller.
to the impeller.
Remove the foreign matters.
Poor carbon brush rectification
Exchange the motor.
Poor cord, lead wire
Exchange cord, lead wire.
Poor rectification of
carbon brush
carbon brush
Exchange the motor.
Poor electric connector or
receiver
receiver
Repair the electric connector
or receiver.
or receiver.
Poor capacitor
Exchange the capacitor.
Bent connection parts
Exchange the parts.
Poor connection
(Caused by foreign matters)
(Caused by foreign matters)
Remove the foreign matters
and reconnect.
and reconnect.
Armature is cut or foreign
matters attached.
matters attached.
Exchange the motor
Remove foreign matters.
Remove foreign matters.
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5. VIBRATION NOISES
6. RADIO, TV RECEPTION DISTURBANCE
7. IMPROPER TUBE OF NOZZLE CONNECTION