Hitachi CV-SG90 Service Manual
SERVICE MANUAL
CV-SG90
VC No.0236E
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
････････････････････････････ 5
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)x214mm(H)
VACUUM CLEANER
SEPTEMBER 2004 Hitachi Home &Life Solutions,lnc.
-2-
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.
-3-
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.
2
1
4
3
2
1
Seal ring Stopper ring
Control panel handset
Knob
Hose
Claws
-4-
3.How to empty the dust case
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.
Note :
¡Before you empty the dust case, be sure to turn off the power and
unplug the cleaner from the mains socket.
Dust case
Max line
Dust case
Dust
Open button for lid
of dust collection
case
The lid of
dust case
1
Open the dust case cover while pressing
the front side of cleaner body, and lift out the
dust case from cleaner right above.
Mesh filter
Remove tiny
dust from the
mesh filter.
Maintenance brush
2
1
Pleated black filter
90°
Mesh filter
2
1
max.
max.
How to dispose of the dust
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 turn the dust case downward, otherwise it may
cause dust scattered.
¡Move the dust removal lever on right and left by ten
times.
Request :
¡If the suction power would be weak, please move the
dust removal lever several times more.
At the maintenance of pleated black filter,
1) Open the pleated black filter to the angle of 90 degree.
2) Remove the filter downward with keeping opened.
When you reinstall it, put the filter by contrary way of
removal.
Transparent
case cover
Open button for lid of
dust collection case
Front side of cleaner body
2
Maintenance of pleated black filter
¡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.
Caution :
¡When dust is put to the pleated black filter, remove it away
from the filter with attached maintenance brush.
3
Put the dust case into a big vinyl bag,
and press the open button in the bag.
Request :
¡When you reattach the maintenance brush
to original position, set it firmly according
to the procedure 1)
-
2).
Notes :
¡If the ion air turbine brush sucks some sharp items such as pieces of broken glass, pins, take care not to
touch them.
4
Remove the dust around mesh filter
with attached maintenance brush.
Pleated black filter
Dust removal
lever
Remove
filter
Back side
Dust case
Dust case
inlet
Loading...