English
Dial
CAUTION
When using the grinder in the immediate vicinity
of welding equipment, the rotational speed may
become unstable. Do not use the grinder near
welding equipment.
4. Use light grinding pressure.
There is no need to press hard when grinding. Usually
the grinder's own weight is suffi cient to allow the
required light contact with the surface to be ground.
Do not apply the grinding wheel strongly to the grinding
surface. The grinder makes use of electronic circuit,
so during application of load rotates at high speed,
so ample grinding eff ect can be obtained by applying
light pressure. If a strong grinding pressure or other
abnormal load is applied, the overload protection
circuit will operate and make the grinder stop rotating,
so please stop applying load immediately. Following
this, switching the power OFF and then ON again, will
cause the rotation to increase to the regular speed.
CAUTION
When using the tool at any value except the
full speed (Dial scale 6), the motor cannot
be suffi ciently cooled due to the decreased
number of revolution. This could result in the
risk of burning and damaging the motor before
an overload protective mechanism starts to
function.
Make sure that you use the tool by lightly
applying it to the surface of material when you
use it at any value except the full speed (Dial
scale 6).
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.
5. Use proper grinding angle.
Grind only with the wheel's edge by lifting the grinder
15° to 30°, as shown in Fig. 5.
12
Fig. 4
CAUTION
Do not use the entire surface of the depressed
center wheel. Use only the edge of the depressed
center wheel.
6. Move the grinder in the proper direction.
When using a new depressed center wheel in
direction A (Fig. 5), the wheel edge may cut into the
workpiece. In this case, grind in direction B (Fig. 5).
Once the wheel edge is worn, the workpiece can be
ground in both directions.
A
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.
7. 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 not lay the grinder down in areas of dust or
dirt until it has come to a complete stop.
DEPRESSED CENTER WHEEL ASSEMBLY
AND DISASSEMBLY
WARNING
Never attempt to assemble or disassemble
the depressed center wheel, unless the power
switch is in the "OFF" position and the electrical
cord has been disconnected from the receptacle.
1. Assembly
(1) Turn the disc grinder upsidedown so that the spindle
is facing upward.
(2) Align the oval-shaped indentation of the wheel washer
with the notched part of the spindle, then attach them.
(3) Fit the protuberance of the depressed center wheel
onto the wheel washer.
(4) Screw the wheel nut onto the spindle.
(5) While pushing the push button with one hand, lock the
spindle by turning the depressed center wheel slowly
with the other hand.
15° – 30°
B
Fig. 5