Maintenance And Inspection - Hitachi SAT-180 Mode D'emploi

English
PRACTICAL SANDER POLISHER APPLICATIONS
1. Sander operation
When utilizing this tool as a disc sander, set the
speed to high (H) for maximum efficiency.
(1) Do not excessively push the sanding disc against
the surface of the material. Optimum sanding can
be achieved by the weight of the machine alone.
Excessive pressure will reduce the revolving speed
of the disc, creating an unevenly finished surface
and causing overload to the motor.
(2) Do not apply the entire disc surface to the surface
of the material. As shown in Fig. 1, the sander
should be held at an approximately 15° to 25° angle
in relation to the material surface so that the
peripheral portion of the sanding disc is offered to
the material surface.
(3) Precaution immediately after finishing an operation:
After turning the switch OFF, do not put the sander
down until the sanding disc has come to a complete
stop. This precaution will not only prevent a serious
accident, but will also reduce the amount of dust
and swarf sucked into the machine.
2. Polisher operation:
When utilizing this tool as a polisher, set the speed
to low (L) for maximum efficiency.
(1) Curved surfaces as well as flat surfaces can be
efficiently finished. Do not excessively push the
polisher against the surface of the material. The
weight of the polisher alone is sufficient for effective
polishing. Excessive pressure will result in a poor
finish and cause possible overload to the motor.
(2) Sanding disc, polishing compound or wax should
be selected in accordance with the material and the
desired surface finish. Maximum polishing effect
will be attained by following the following method:
Preliminary polishing with sander using a finegrain
sanding disc.
Polishing with wool bonnet using polishing
compound and/or wax. Apply a small quantity of
compound and/or wax on material surface and polish
with the wool bonnet.
MOUNTING AND DISMOUNTING THE
SANDING DISC AND WOOL BONNET
1. For Sander operation
(1) After placing the sanding disc on the rubber pad,
thread the washer nut onto the spindle.
(2) While holding the spindle with the accessory wrench
(A), as shown in Fig. 2, turn the washer nut clockwise
with accessory wrench (B) to screw it onto the
spindle. Ensure that the washer nut is thoroughly
tightened by using both wrench (A) and (B).
(3) To remove the sanding disc, follow the above
procedures in reverse.
2. For Polisher operation
(1) Insert the washer nut through the rubber pad and
thread it onto the spindle.
(2) While holding the spindle with the accessory wrench
(A), as shown in Fig. 3, turn the washer nut clockwise
with accessory wrench (B) to screw it onto the
spindle. Ensure that the washer nut is thoroughly
tightened by using both wrench (A) and (B).
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(3) As shown in Fig. 4, wrap the rubber pad with the
hood of the wool bonnet, and firmly secure it by
tightening and tying its draw string. Be sure the
excess string is firmly tucked inside the wool bonnet
to prevent it from flying out while polishing.
CAUTION
Improper fitting of the wool bonnet may cause
vibration.
(4) To remove the wool bonnet, follow the above
procedures in reverse.

MAINTENANCE AND INSPECTION

1. 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 result in serious hazard.
2. Inspecting the carbon brushes (Fig. 5)
The motor employs carbon brushes which are
consumable 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.
3. Replacing a carbon brush:
Disassemble the brush cap with a minus-head
screwdriver. The carbon brush can then be easily
removed.
4. 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.
5. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the
tool to the Hitachi Authorized Service Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools,
the safety regulations and standards prescribed in
each country must be observed.
MODIFICATION
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Accordingly, some parts (i.e. code numbers and/or
design) may be changed without prior notice.