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Website http://biz.lgservice.com

VACUUM CLEANER

SERVICE MANUAL

MODEL : VK7918NNA

CAUTION

BEFORE SERVICING THE UNIT, READ THE

"SAFETY PRECAUTIONS" IN THIS MANUAL.

April, 2010

Printed in Korea P/No.: MFL62620210

CONTENTS

SAFETY PRECAUTIONS.............................................................................................................................3

CAUTIONS ...................................................................................................................................................3

DESCRIPTION..............................................................................................................................................4

SPECIFICATIONS ........................................................................................................................................4

DISASSEMBLY ........................................................................................................................................5~6

TROUBLE SHOOTING GUIDE................................................................................................................7~9

SCHEMATIC DIAGRAM.............................................................................................................................10

EXPLODED VIEW ................................................................................................................................11~14

REPLACEMENT PARTS LIST.............................................................................................................15~16

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SAFETY PRECAUTIONS

BEFORE OPERATING THIS VACUUM CLEANER, READ THIS SERVICE MANUAL THOROUGHLY,

AND OBSERVE EACH POINT CAREFULLY.

1. Air filter and motor safety filter

1) These filters are reusable.

2) Never use the vacuum cleaner without the filters.

It may damage the motor.

3) When the suction power decreases, wash the air filter and the motor safety filter with water.

4) When the alarm sounds, wash the air filter and the motor safety filter at least once every 3 months.

NOTE : Reusing of the air filter and motor safety filter.

Never wash the filters in a washing machine or in a dishwasher.

Never use hot water for washing the filters.

Reuse the filters after drying it completely in the shade for a day.

Do not dry near fire or direct sunray.

2. Exhaust filter

1) This filter is reusable HEPA filter.

2) For clean air, this filter must be assembled.

NOTE : Reusing of the exhaust filter.

Never wash the exhaust filter with water.

Dust off the exhaust filter.

Clean the exhaust filter at least once a year.

Do not brush the filter. This will cause permanently 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.

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 : Clean a hard floor and a carpet floor.

Crevice Tool : Clean any crevice, inside corners or window frames. However, do not use the crevice tool more than 20 minutes because it may cause harm to the motor.

Dusting brush : Clean picture frames, furniture frames, books and other irregular surfaces.

Upholstery nozzle : Clean the furniture, mattresses etc.

5. Close supervision is necessary when this vacuum cleaner is used by near children.

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 pipe, hose or clean filter is clogged or not.

7. Electric shock could occur if used outdoors or on wet surfaces.

CAUTIONS

BEFORE ATTEMPTING TO SERVICE OR ADJUST ANY PART OF THE VACUUM CLEANER,

DISCONNECT THE ELECTRICAL POWER SUPPLY CORD FROM THE WALL OUTLET.

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.

-3-

DESCRIPTION

Flexible Hose

Assembly

Telescopic Pipe

Assembly

Power Cord

Cord Reel

Button

Dust Tank

Floor Nozzle Assembly

(depend on model)

ATTACHMENTS(DEPEND ON MODEL)

2 IN 1 NOZZLE CREVICE TOOL

SPECIFICATIONS

• MODEL : REFER TO THE COVER PAGE

• POWER SOURCE : ON RATING PLATE

• POWER CONSUMPTION : ON RATING PLATE

• POWER CONTROL :

- MAIN : SLIDE KNOB CONTROL(F/HOSE)

• CORD LENGTH : 9m

• HOSE LENGTH : 1.6 m

• NET WEIGHT : 5.8 kg

• PACKING WEIGHT : 10.0 kg

• NET DIMENSION : 445 ×285×305 (D×W×H)

• PACKING DIMENSION : 615

×330×333 (D×W×H)

• ATTACHMENTS(DEPEND ON MODEL)

FLEXIBLE HOSE ASSEMBLY..........................................1EA

TELESCOPIC PIPE ASSEMBLY .....................................1EA

FLOOR NOZZLE ASSEMBLY..........................................1EA

2 IN 1 NOZZLE...................................................................1EA

CREVICE TOOL.................................................................1EA

• This specifications are subject to change according to the buyer's request.

-4-

DISASSEMBLY

NOTE : Before attempting to service or adjust any part of the vacuum cleaner, disconnect the electrical power supply cord from the wall outlet.

• Almost all of the parts of this vacuum cleaner can be disassembled with a screw driver and each connecting component easily fits each other.

Disassemble one by one referring to the exploded view.

• If possible, don't disassemble except for the necessary parts. It is not necessary to disassemble the parts that are not detailed in the exploded view.

3) Disassemble the body cover assembly, lifting the body cover assembly.

Pull out the two lead wires.

1. Disassembly of Body Cover Assembly

1) Remove the three screws fastening the body base.

Body Base

Assembly

2) Remove the dust tank from the vacuum cleaner.

Remove the three screws fastening the body cover.

Disassembly of Motor Assembly

1) Remove the two screws fastening the cover holder.

2) Remove the four screws fastening the motor cover.

3) Unlock the one hook.

4) Pull out the motor and disconnect the two lead wires from it.

Motor Cover

Motor

Cover Holder

Body Cover Assembly

-5-

3. Disassembly of Cord Reel Assembly

1) Pull out the one lead wire.

2) Lift the cord reel assembly from body base.

Cord Real

Assembly

5. Disassembly of Micro Switch and Gear Assembly

1) Remove the two screws fastening the connetor pipe.

2) Pull out the bending pipe.

Connector Pipe

Bending Pipe

4. Disassembly of Motor Housing.

1) Remove the four screws fastening the body base.

3) Separate the sensor holder from the body cover assembly.

4) Pull out the micro switch from the sensor holder.

5) Remove the two screws fastening the gear assembly.

Gear Assembly

Micro Switch

Sensor Holder

-6-

TROUBLE SHOOTING GUIDE

1. SWITCH ON BUT MOTORS DO NOT TURN.

CHECKING CAUSE

CHECK THE POWER

SOURCE

Poor plug insertion

Power cord cut

SOLUTION

Insert again

Repair or exchange

Interior lead wire cut

Motor(stator armature) coil cut or damaged

Exchange the lead wire

Exchange the motor

Poor switch contact point Exchange the switch

2. SWITCH ON, MAIN MOTOR DOES NOT TURN BUT BUZZES.

Motor armature cut Exchange the motor

Ball bearing defacement Exchange the motor

Impeller hindrance

(Caused by foreign matters)

Remove the foreign matters

3. SWITCH ON, MAIN MOTOR TURNS DOWN WITHIN A MOMENT AND BUZZES.

Micro switch breaks down Exchange the micro switch

Insert the dust tank in a body There is no dust tank

-7-

4. SWITCH OFF BUT MOTOR TURNS

Poor switch

Poor connection

5. WEAK SUCTION POWER

Low rotation speed

Motor armature cut

Foreign matters attached to the impeller

Low voltage

Motor turns normally, but suction power is weak.

Hose and extension wands are clogged with foreign matters

Motor safety filter, air filter or exhaust filter are filled with inhaled foreign matter

The regulator on the handle is opened

Exchange the switch

Repair the slide volume of hose or triac of PWB assembly

Exchange the motor

Remove the foreign matters

Inquire to the power utility company

Remove the foreign matters in the hose or extension wands

Remove the foreign matters or clean motor safety filter, air filter or exhaust filter

Close the slide knob by sliding it

-8-

6. VIBRATION NOISES

Loose parts

Unbalanced motor assembly

Foreign matters are attached to the impeller

Armature is cut or foreign matters attached

7. RADIO, TV RECEPTION DISTURBANCE

Poor cord, lead wire

Poor electric connector or receiver

Poor capacitor

8. IMPROPER TUBE OF NOZZLE CONNECTION

Bent connection parts

Poor connection

(Caused by foreign matters)

Secure firmly

Exchange or repair the motor

Remove the foreign matters

Exchange the motor

Remove foreign matters

Exchange cord, lead wire

Repair the electric connector or receiver

Exchange the capacitor

Exchange the parts

Remove the foreign matters and reconnect

-9-

SCHEMATIC DIAGRAM

Blue

Red

Orange

Green

Blue

Brown

Red

Blue

Blue

Red

T/P

Red

Cord reel

Slide volume

Micro switch

Compression

Motor

Main Motor

-10-

ACQBM1

AANBB1

AHDBR1

EBRBM1

MCKBW1

AJWBA1

MAMBB1

MCDBA1

MBDBB8

AHJBA1

#EV#

EXPLODED VIEW

VK7918NNA (VK7918NNA.APTQLGU)

MDSBA1

MDJBM1

MCKBZ1

MCQBM1

MCKBZ2

MDSBA7

MBDBB9

-11-

AJWBA1

BODY BASE ASSEMBLY

MEGSH1

ACVBA1

MCKBE1

EAUBA1

ADQBE1

MEKBM1

MDSBA2

ABNBA1

MDSBA3

MCKBW1

#EV#

BODY COVER ASSEMBLY

M CKCH 1

ACQCB1

M BGCB 1

MEBCC 2

MCKCA 1

MEGCH1

MCKCS 1

MBGCR 1

MCKCB 1

MF G C L 1

MEGCS1

M J HCS 1

MJHCM1

MDTC G 1

MBGCP1

MJ C T A 1

MJ C T A 1

MDSCA 4

MEACA 1

M EACA 2

EADCS 2

MCKCZ1

M DSCA 1

M DSCA 2

M DSCA 1

M DSCA 1

M DSCA 1

EAUCM 1 EADCS 1

M G ECC 1

MG ECB 1

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AECC G 1

MDQCF 1

M CKCV 1

M DSCA 3

M EBCC 1

M CKCD 8

M DSCA 4

MDJC M 1

MDSCA 5

#EV#

AJ L TD 1

ACQ T D 1

MBLTT1

MDS T A 1

ABNTA1

DUST TANK ASSEMBLY

MFCTL1

MCKTH1

MGZTR 1

M G J T R 1

M J M T D 1

MDTCA 1

-13-

#EV#

AEMAF1

ACCESSORIES

AGBN62

ABCAD1

MFVAC1

MFL552

OWNERS

MANUAL

MAY000

AGRPT1

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