Depressed Center Wheel Assembly And Disassembly - Hitachi G18DBAL Instructions De Sécurité Et Mode D'emploi

Paddle lever
Ⓑ
3. 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 effect 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.
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. 8.
CAUTION
Do not use the entire surface of the depressed
c e n t e r w h e e l . U s e o n l y t h e e d g e o f t h e
depressed center wheel.
5. Move the grinder in the proper direction.
When using a new depressed center wheel in direction
A (Fig. 8), the wheel edge may cut into the workpiece.
In this case, grind in direction B (Fig. 8).
Once the wheel edge is worn, the workpiece can be
ground in both directions.
Lever
Ⓐ
Fig. 7
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.
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.
DEPRESSED CENTER WHEEL ASSEMBLY
AND DISASSEMBLY
WARNING
Be sure to turned off the switch and pull out the
battery.
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.
Tighten the wheel nut by using the supplied wrench
as shown in Fig. 9.
English
15° – 30°
B
Fig. 8
17