Mounting And Operation; Maintenance And Inspection - Hitachi SP 18VA Bedienungsanleitung

MOUNTING AND OPERATION

Action
Attachment of a loop handle
Assembling sanding disc
Assembling wool bonnet
Switch operation and variable
speed operation
Sander operation
Replacing carbon brush
Selecting accessories
Motor speed can be variable as desired by rotating the dial;
it is increased by turning the dial towards "6", decreased by
turning it towards "1".
Select the motor speed appropriate for the work being done.
The following table gives the motor speeds corresponding
to each indication on the dial scale and shows the types of
work for which they are suitable.
Dial
R.P.M.
Indication
1 600
2 1100
3 1700
4 2300
5 2900
6 3400
CAUTION
The dial cannot be rotated further than the "6" or "1" on
the scale in their respective directions.
Sander operation
(1) This unit is designed to provide suffi cient polishing
(sanding) power with the disc pressed lightly against
the sanding/polishing surface: it is equipped with an
electronic control circuit to ensure that the motor will
not slow down even when loaded. There is therefore no
need to press the sanding disc hard against the surface;
doing so can overload the motor, subsequently causing
the overload cut device to step into operation by cutting
the motor's power supply.
If this should happen, cut the power switch and turn at
the correct motor speed.
(2) Do not apply the entire disc surface to the surface of
the material. As shown in Fig. 5, 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 off ered to the material surface.
(3) Precaution immediately after fi nishing 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.
Polisher operation
(1) Curved surfaces as well as fl at surfaces can be effi ciently
fi nished. Do not excessively push the polisher against
the surface of the material. The weight of the polisher
alone is suffi cient for eff ective polishing. Excessive
pressure will result in a poor fi nish 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 fi nish. Maximum polishing eff ect will be attained
by following the following method:
Figure Page
1 66
2 66
3 66
4 66
5 67
6 67
― 68
Type of work
For Polishing
For Sanding
○ Preliminary polishing with sander using a fi negrain
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.
CAUTION
○ Carefully guard against permitting the cabtyre cord to
touch the wool bonnet or sanding disc during operation.
If the cord touches, there is a danger that it may become
entangled.
○ Do not use the lock pin as a brake to stop the tool as this
may lead to damage of the gear or detachment of the
tool.

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. 6)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brushes with new ones having the same carbon brush
No. ⓐ shown in the fi gure when it becomes worn to or
near the "wear limit" ⓑ. In addition, always keep carbon
brushes clean and ensue that they slide freely within the
brush holders.
3. Replacing a carbon brush (Fig. 6)
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. Cleaning lock pin section
If the lock pin section becomes dirty, clean it at once.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
GUARANTEE
We guarantee Hitachi Power Tools in accordance with
statutory/country specifi c regulation. This guarantee does
not cover defects or damage due to misuse, abuse, or
normal wear and tear. In case of complaint, please send
the Power Tool, undismantled, with the GUARANTEE
CERTIFICATE found at the end of this Handling instruction,
to a Hitachi Authorized Service Center.
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