Dust Removal - Hitachi SB-110 Handling Instructions Manual

As shown in Fig. 1, turn the adjust screw to the
left or right and position the sanding belt so that
both edges protrude 2-3mm beyond the edges of
the pulleys. If the sanding belt is positioned too far
to the inside during operation, it may cause abrasi
on and damage to the machine. If sanding belt
moves during operation, adjustment can be made
while in operation.
2. Switching the Sander ON and OFF
By pulling the trigger and pushing the stopper, the
switch will remain ON even when the trigger is
released, promoting continuous, efficient operation.
By pulling the trigger again, the stopper is released
and the switch is turned OFF.
CAUTION
Never turn the power switch ON when the sander
is contacting the surface to be sanded. This is
necessary to preclude damage to the material. The
same applies when switching the power OFF.
3. How to hold the Sander
Grasping the handle with one hand and the knob
with the other, hold the machine so that it lightly
contacts the surface to be sanded. The weight of
the machine itself is sufficient for sanding and
polishing at highest efficiency. DO NOT apply
additional pressure to the sander. Additional pressure
will overload the motor, shorten the service life of
the sanding belt, and lower sanding or polishing
efficiency.
4. How to move the Sander
For optimum operating efficiency, alternately move
the sander forward and backward at a constant
speed and balance.
5. Selecting the proper Sanding Belt
Select a sanding belt of proper grain size and type
by referring to Tables 2 and 3 below.
Table 2
Desired finish
Coarse finish
Medium finish
Semi fine finish
Fine finish
Table 3
Grain type Surface to be worked on
AA Steel, Wood
Wood, Bamboo (8 grain sizes
WA are available #40, 60, 80, 100,
120, 150, 180 and 240)
Nonferrous metals, Slate,
CC
Plastics, Concrete
CAUTIONS
For grain size and type matching, refer to Table1.
Sanding belt grain should be coarser than sandpaper
used for manual work.
Use sanding belts of same grain size until uniform
surface is obtained. Changing grain size may result
in poor finish.
Proper grain size
30-40
40-100
80-240
180-400
6. Changing the Sanding Belt speed
Either high-speed or low-speed operation can be
selected according to the materials and operating
conditions. Selection of sanding belt operating speed
can be achieved by shifting the tumbler switch to
the desired position. Position symbols are as shown
in Table 4.
Table 4
Symbol
H
L
7. Corner working
Corners can be sanded and polished by using the
machine as shown in Fig. 2.
CAUTIONS
Be careful that loose fitting work clothes do not
become caught and drawn into the sanding belt and
pulleys.
DO NOT put the sander down until the sanding
belts has come to a complete stop. It is dangerous
for the operation of the machine itself.
During operation, the cord must trail to the left side
as seen from behind the machine, as shown in Fig.
3. If the cord is to the right side, it could interfere
with the sanding belt, damaging the cord and cause
a serious accident.
SANDING BELT ASSEMBLY
1. Attaching the Sanding Belt
(1) As shown in Fig. 4, pull the lever and the idle pulley
will move backward, toward the drive pulley.
(2) Place the sanding belt on the drive pulley and idle
pulley, passing it over the outside of the shoe plate,
and ensure that the arrow on the inside of the belt
coincides with the rotational direction of the drive
pulley.
CAUTION
Installing the sanding belt in the wrong direction
will result in lower work efficiency and shorten the
life of the sanding belt.
(3) Push the lever with a finger, and the idle pulley
will move forward and place proper tension on the
sanding belt. Be careful not to pinch your finger
with the lever.
(4) Adjust the sanding belt position as described in the
Practical Operating Procedures.
2. Removing the Sanding Belt
Pull the lever as described above. The idle pulley
will move backward, releasing tension on the
sanding belt, and the sanding belt can be easily
removed from the pulleys.

DUST REMOVAL

When an excessive amount of dust accumulates in the
dust bag, dust collecting efficiency decreases sharply.
To ensure optimum dust collecting efficiency, as well as
working efficiency, empty the dust bag when it becomes
filled to approximately 2/3 of its capacity. The bag can be
emptied as follows:
English
Speed
High-speed
Low-speed
6