Hitachi CV-SF90 Service Manual

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SERVICE MANUAL

CV-SF90

VC No.0208E

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

CONTENTS

1.Attachments ･････････････････････････････2

2.Replacement instructions

･･････････････････2

3.How to empty the dust case

･･･････････････4

4.Maintenance

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5.Final test

････････････････････････････････8

6.General instructions for operation and maintenance

････････････････8

7.Parts list

････････････････････････････････9

8.Construction diagram and

connection diagram

･･････････････････････11

SPECIFICATIONS

Rated voltage :AC240V, 50-60Hz Rated input :900W, MAX 1000W Motor :Commutator motor Fan :Turbo type 1 stage Speed :39,000rpm Insulation class of materials :Class E Weight(Without attachment) :3.6kg Dimensions :330mm(L)x255mm(W)x208mm(H)

VACUUM CLEANER

JANUARY 2004 Hitachi Home &Life Solutions,lnc.

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1. Attachments

2. Replacement instructions

2.1 How to replace the power control board assembly, motor assembly and lead wire assembly (include triac PWB assembly).

(1)Open the dust case cover while pressing the button of dust case, and lift out the dust case from

cleaner body.

(2)Take off three tapping screws 4x20(7)(8)and two tapping screws 4x12(9), then the upper case

assembly can be removed.

(3)Take out the power control board assembly(13), motor assembly(18) and lead wire assembly(16)

from the lower case .

(4)Release the triac PWB assembly by taking off the lower case.

2.2 How to replace the power cord

(1)Open the dust case cover while pressing the button of dust case,and lift out the dust case from

cleaner body.

(2)Take off three tapping screws 4x20(7)(8) and two tapping screws 4x12(9), then the upper case

assembly can be removed. (3)Take out the cord reel assembly from the lower case . (4)After rotate the cord reel assembly anticlockwise several times by pushing the C pedal to release prewind

of cord reel, take of four tapping screws 4x16 can be taken out.

Hose ass'y (With control panel handset and joint pipe)

････1

Ion Air Turbine Brush

･････････････････････････････････1

Telescopic Extension Pipe

･････････････････････････････1

Crevice nozzle

･･････････････････････････････････････1

Carrying Handle

･･････････････････････････････････････1

C pedal

Cord reel assembly

four tapping screws 4x16

(5)After assembly, wind a spring 5 times before set.

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2.3 How to replace the dust indicator assembly

(1)Take off the inner case(15) can be removed. (2)Take out the dust indicator assembly.

2.4 How to disassemble the ion air turbine brush

(1)How to replace roller ass'y(F)

Insert a blade of cutter between the roller shaft cover and lower case of ion air turbine brush

(2positions, both edges off the ion air turbine brush), cut the projection of roller ass'y cover(F). And detach the roller shaft cover(F) from the ion air turbine brush with a screwdriver. (When you maintenance the roller ass'y, please settle the ion air turbine brush firmly, and be careful the blade

of cutter not to be broken.) Detach the roller shaft and roller ass'y(F) from the ion air turbine brush. Insert a roller shaft into new roller ass'y(F) and install it into lower case of ion air turbine brush.

Please assemble the roller shaft while facing flat face toward inside. Push the roller shaft inside and put the roller shaft cover on it. Assure that the roller ass'y dosen't

take off from the ion air turbine brush while pulling it with your fingers.

(2)How to replace roller ass'y(R)

Undo the screw and the roller shaft cover, and take off the wasted roller ass'y(R). Replace to new roller ass'y(R), return the roller shaft cover to original position and screw it.

2.5 How to replace the hose

(1)You can separate the control panel handset from the hose. (2)Pull the hose pressing two claws clicked into the holes on both sides of the control panel handset. (3)Remove the seal ring and the stopper ring from the hose end by turning the seal ring (left-handed

screw).

(4)As to removing the joint pipe assembly(40) from the other side's hose end, do it as same as the

control panel handset removal.

Seal ring Stopper ring

Control panel handset

Knob

Hose

Claws

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1) Empty the dust case before the dust reaches the max line. If you continue using the cleaner with a full dust case, the suction power will be decreased.

2) Empty the dust case periodically.

3) When emptying the dust case also remove the dust around the filters.

Open the dust case cover while pressing the button of dust case, and lift out the dust case from cleaner body.

Put the dust case into a big vinyl bag, and press the open button in the bag.

Notes : ¡When you lift out the dust case from cleaner

body, be careful not to press the open button of the dust case.

¡Do not lift out the dust case from the body

while the cleaner is in use.

¡The dust case should be kept upright when

removing it from the body to prevent dust spillage.

How to dispose of the dust

Note :

¡Before you empty the dust case, be sure to turn off the power and

unplug the cleaner from the mains socket.

¡Turn the dust case downward and push the open button on the lid of the dust case to release

dust into a vinyl bag.

¡To remove stubborn dust adhesion inside the dust case, pat the side of dust case. ¡Dust around the mesh filter and under the mesh filter can be removed with tissue paper and

an old toothbrush.

Notes : ¡Some types of dust may cause the suction power to become weak before max line is reached, in that

case, empty the dust and clean the filters.

¡If the rug & floor nozzle sucks some sharp items such as pieces of broken glass, pins, take care not to

touch them.

3.How to empty the dust case

Max line

Dust case

Open button for lid of dust collection case

Button for the dust case

Transparent case cover

Dust case

Open button for lid of dust collection case

Tissue paper

Dust

The lid of dust case

Under mesh filter

mesh filter

The lid of dust case

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4.Maintenance

Close the lid of dust case until the button clicks.

Close the top cover until the button clicks.

Note :

¡Please be careful not to be put your fingers between the

top cover and dust case.

When the orange indicator appears in the window continuously, the cleaner requires emptying. Check the dust indicator by lifting suction tool from the floor and removing the crevice nozzle when it is used.

Note :

¡If the cleaner is used in such a condition that the orange indicator appears in the window, air to the motor

will be reduced and the motor will eventually burn out.

¡When suction power is weak, the operation noise level is higher and the filter maintenance sign

operates, the dust case should be emptied and the filters cleaned (inside mesh filter and under mesh filter).

Filter maintenance sign

How to empty dust case

Warning :

Before maintaining, the mains plug should be removed from the mains socket.

Push the dust case into the cleaner body firmly so that there is not a gap between the lid of the dust case and cleaner body.

Click

Dust case

Lid of dust case

Dust case Body

Transparent case cover

Click

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Maintenance

Dust case filters (The filters are washable.)

Remove the dust case and empty the dust.

1) Turn the dust case upside-down, press the button with thumb,

2) Remove the cyclone chamber by pulling the base of cyclone chamber with two fingers (the forefinger and the middle finger).

3) Remove the dust around the inside mesh filter. (The mesh filter is washable.)

Open the lid of the dust case and remove the mesh filter, you can wash the mesh filter, urethane filter, black filter and under mesh filter with water.

Return the lid of dust case to the original position until it clicks and put the base of cyclone chamber on the dust case. Align the

「｣

mark of the

base of cyclone chamber to the

‖｣

mark of the dust case.

Install the dust case into cleaner body.

Note :

¡Be sure to set each filter in its correct position firmly, otherwise suction

power will be decreased.

HEPA clean filter (Required maintenance once a month) (The HEPA clean filter is not washable.)

Remove the HEPA clean filter from the dust case as shown in the illustration.

Remove dust around HEPA clean filter by patting it gently.

Reinstall the HEPA clean filter into dust case with grips facing the upward.

Notes :

¡Only pat the filter gently. If you pat it strongly, its shape may be changed and this will cause dust leakage. ¡Do not use a brush with hard bristles , it may cause damage to the filter. ¡Make sure that the HEPA clean filter is seated correctly. Otherwise you cannot install the dust case correctly.

If you use the cleaner without HEPA clean filter, it will eventually cause motor failure.

Mesh filter

Lid of the dust case

Mesh filter Urethane filter Black filter

Under mesh filter

The base of cyclone chamber

Cyclone chamber

Dust case

Under mesh filter

Black filter

Inside mesh filter

The base of cyclone

chamber

Press the button

Urethane filter

Click

Dust case

Lid of the dust case

HEPA clean filter

Knob

The base of cyclone chamber

▲mark

合わせ位置 

HEPA clean filter

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How to wash filters with water

Notes : ¡After washing the filters with water, please dry up them naturally and install them in their correct

positions. Do not use wet filters, as this may damage your cleaner and render it unsafe.

¡Do not wash the filters with hard hairbrush, do not wash the mesh filter vigorously, it may damage

the filter.

¡Do not wash the filters with detergent, bleach, benzene, thinner and alcohol, do not wash them in a

washing machine. And also do not dry the filters with hair dryer, otherwise we can not guarantee the cleaner performance and quality.

Remove the mesh filter, the urethane filter and the cyclone chamber from the dust case, and wash them with water. After drying the filters completely, fit them in their correct positions and use the cleaner.

Mesh filter, urethane filter

¡Gently wash the mesh filter with water and an old toothbrush. ¡Wash and rub the urethane filter well with water until the water is clear, and lay it out flat to dry

naturally.

¡It can take a long time for the urethane filter to dry up, so please use a replacement one alternately.

Inside mesh filter

¡Gently wash the inside mesh filter of cyclone chamber

with water and an old toothbrush.

Maintenance for cleaner body

Unplug the cleaner from the mains and wipe the body with a soft cloth slightly moistened with water.

Note : ¡Do not wash the cleaner with benzene, thinner and

detergent, it may cause colour change and transformation.

Black filter, under mesh filter and dust case

¡Gently wash the under mesh filter and black filter with

water and an old toothbrush.

Notes : ¡When suction power is weak, even though all the filters have been cleaned in the dust case and dust

has been removed from the HEPA clean filter, the filters will need to be replaced. When you need to replace the filters, these should be purchase from a Hitachi dealer.

¡Replacement of HEPA clean filter is required every 4 years.

Maintenance

Mesh filter

Urethane filter

Mesh filter

Inside mesh filter

The base of cyclone

chamber

Urethane filter

Dust case

Under mesh filter

Black filter

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5. Final test

(1)After reassembly,run the cleaner for at least 15 minutes without joining the hose its main body and be

certain that there is no abnomal vibration.

(2)Measure the insulation resistance between the power supply plug and the metal surface by 500V DC

insulation resistance tester and be certain that the insulation resistance is not less than 10M ohm.

General instructions for operation and maintenance

(1)Always disconnect cord from electrical outlet before servicing the cleaner. (2)Do not pick up matches, fireplace ashes or smoking material with the vacuum cleaner as a possible

fire hazard may result. (3)Avoid picking up sharp objects. They may damage the vacuum cleaner. (4)Do not use the cleaner to pick up wet dirt, and avoid using it in a wet and moist place as moisture

may damage the motor and other mechanical parts. (5)Do not block the air flow. Any blockages or obstructions to the nozzle, hose, etc. or the exhaust air

outlet can cause loss of power and motor overheating. (6)Do not run the cleaner over cord. It may damage insulation. (7)Avoid cleaning the swich and receptacle parts with wet cloth and splashing water on it as moisture

may cause a short circuit. (8)Your vacuum cleaner is not a toy. Do not allow children to play with it. Do not leave the vacuum

cleaner connected to an electrical outlet unattended. ¡Warning: Electric shock could occur if used outdoors or on wet surfaces.

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7. Parts list

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8. CONSTRUCYION DIAGRAM AND CONNECTION DIAGRAM

CV-SF90 NO.0208E Hitachi Home &Life Solutions,lnc.

Printed in Japan(H)

Hitachi CV-SF90 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual