Maintenance And Inspection - Hitachi SV 12V Handling Instructions Manual

English
CAUTION
Replace the pad only. Use the other parts without
removing them.
2. Mounting the cleaner adapter (for Models SV12V
and SV12SD) (Fig 8).
After mounting the dust collector hose onto the
cleaner adapter, mounth the cleaner adapter onto
the unit tn the same way as mounting the dust bag.
MAINTENANCE AND INSPECTION
1. Emptying and cieaning the Dust Bag
(For models SV12V and 5V125D)
If the dust bag contains too much saw dust, dust
collection will be affected. Empty the dust bag when
it gets full.
Remove the dust bag, open the fastener, and dispose
of the contents.
2. Inspecting the sanding paper
Since use of worn-out sanding paper will degrade
efficiency and cause possible damage to the pad,
replace the sanding paper as soon as excessive
abrasion is noted.
3. inspecting the mounting screws:
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Failure
to do so could resu!t in serious hazard.
4. Inspecting the carbon brushes (Fig. 10)
The motor employs carbon brushes which are consu-
mable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brush with a new one having the same carbon brush
No. shown in the figure when it becomes worn to or
near the "wear limit". in addition, always keep
carbon brushes clean and ensure that they slide
freely within the brush holders.
b. Replacing carbon brushes:
O Disassembling
(1) Loosen the two screws on the top cover, and remove
the top cover. (Fig.11)
(2) Lift out the brush holder together with the carbon
brush, while being very careful not to forcibly pull
the internal wires within the brush holder.
(3) Remove the carbon brush from the brush holder.
© Reassembling
(1) Insert the brush terminal into the brush holder.
Turn the brush terminal 90".
(2) While maintaining this brush terminal position as
explained in (1), insert the new carbon brush into the
brush holder.
(3) While pressing the carbon brush against the outside
wall of the housing's bearing compartment, insert
the brush holder into the housing's original position.
(4
—
Piace the tnternal wire tn the specified position.
Be very careful not to allow the internal wire to
contact the armature or rotating parts of the motor.
(Fig.12)
Replace the top cover, while being carefu! to ensure
tt does not pinch the internal wire, and secure it
firmly with the two screws.
CAUTION
Should the internal wire be pinched by the top cover
Or come tn contac with the armature or rotating parts
(b
-r
of the motor, a serious danger of electric shock to
the operator will be created. Exercice extreme cau-
tion in disassembling and rea-ssembling the motor,
following the above procedure exactly.
DO NOT attempt disassemble any parts other than
those necessary to effect replacement of the carbon
brush.
6. Maintenance of the motor
The motor unit winding is the very "heart" of the
power tool. Exercise due care to ensure the winding
does not become damaged and/or wet with oil or
water.
NOTE
Due to HITACHI's continuing program of research and
development, the specifications herein are subject to
change without prior notice.
This appliance is produced to conform to the require-
ments of B.S. 800: 1977.
"This requirement is applicable to appliances for THE
UNITED KINGDOM.
IMPORTANT
Correct connection of the plug
The wires of the main lead are coloured in accordance
with the following code:
Blue: ~ Neutral
Brown: ~ Live
As the colours of the wires in the main lead of this too!
may not correspond with the coloured markings identi-
fying the terminals in your plug proceed as follows:
The wire coloured blue must be connected to the
terminal marked with the letter N or coloured black.
The wire coloured brown must be connected to the
terminal marked with the letter L or coloured red.
Neither core must be connected to the earth terminal.
NOTE
This requirement is provided according to BRITISH
STANDARD 2769: 1984.
Therefore, the letter code and colour code may not be
applicable to other markets except The United Kingdom.
The noise emitted by this power tool is measured in
accordance with IEC 59 (CO) 11, IEC 704, DIN 45 635
Part 21, NFS 31-031 (84/537/EEC for concrete
breakers).
The sound pressure level at the workplace can exceed
85 dB (A); in this case noise protection for the operator
is required.