9. Use only properly rated depressed center wheels.
Use only depressed center wheels rated at
13300/min or more for G12SE3 and 12000/min
or more for G13SE3
.
Using a depressed center wheel rated less can lead
to wheel disintegration during operation and cause
serious bodily injury.
10. Check the push button.
Make sure that the push button is disengaged by
pushing push button two or three times before turning
on the grinder. (Fig. 5)
GRINDER OPERATION
1. Hold the grinder
fi
rmly by its housing and side handle
(Fig. 1).
The grinder produces a counterforce which must be
controlled by
fi
rmly holding onto the grinder.
2. Switch
operation
[When the switch has locking mechanism]
Switch ON: To switch on, slide the OFF lock lever in
the direction of and press the paddle
lever in the direction of as shown in
Fig. 3-a.
Furthermore, slide the ON lock lever
in the direction of shown in Fig.3-b
while pressing the paddle lever to lock
and enable continuous operation.
Switch OFF: To release the locking mode, press
the paddle lever in the direction of
shown in Fig.3-a, and release the
paddle lever to switch o
ff
.
A
C
B
OFF lock lever
Paddle lever
ON lock lever
(a)
(b) Switch with locking
mechanism
Fig. 3
[When the switch has no locking mechanism]
To switch on, slide the lock lever in the direction of
and press the paddle lever in the direction of as
shown in Fig. 3-a. Release the paddle lever to switch
o
ff
.
NOTE:
The paddle lever can not be locked.
3. Use light grinding pressure.
There is no need to press hard when grinding.
Usually the grinder’s own weight is su
ffi
cient to allow
the required light contact with the surface to be
ground.
WARNING
Do not press the grinder forcibly against the
surface to be ground. Heavy pressure can result
in wheel breakage and serious injury. It can also
damage the surface being ground or damage
the grinder’s motor.
4. Use proper grinding angle.
Grind only with the wheel’s edge by lifting the grinder
15° to 30°, as shown in Fig. 4.
CAUTION
Do not use the entire surface of the depressed
center wheel. Use only the edge of the depressed
center wheel.
5. Move the grinder in the proper direction.
When using a new depressed center wheel in
direction A (Fig. 4), the wheel edge may cut into the
workpiece. In this case, grind in direction B (Fig. 4).
Once the wheel edge is worn, the workpiece can be
ground in both directions.
15° – 30°
A B
Fig. 4
NOTE
The wheel provided (resinoid wheel) is rated as Class
A grain and # 36 grain size. It is most suitable for
heavy grinding of steel and other types of materials.
6. Adjust operation to desired
fi
nish.
For
a
fi
ne
fi
nish, decrease pressure by lifting slightly.
Grind slowly and at the appropriate speed.
CAUTION
The revolving depressed center wheel will create
air turbulence.
Do no lay the grinder down in areas of dust or dirt
until it has come to a complete stop.
10
English
00Book̲G12SE3.indb 10
00Book̲G12SE3.indb 10
2020/02/11 10:49:37
2020/02/11 10:49:37
