Grinder Operation - Hitachi G12VE Manual De Instrucciones

Lever
Set piece (B)
M5 screw
WARNING
If the wheel guard is not attached properly, a
broken wheel may result in and cause death or
serious injury.
7. Thoroughly check that the depressed center wheel is
free of cracks, splits and other abnormalities before
mounting. Make sure it is fi rmly clamped and has
been properly mounted. Refer to page 12 of this
manual for Depressed Center Wheel Assembly and
Disassembly
8. Test the grinder before using.
Before actually beginning the grinding work, test the
grinder by fi rst clearing the area of all other personnel.
Make sure the wheel guard is in place and that you
are wearing eye protection. Turn the grinder "on", and
make sure the grinder runs smoothly and shows no
abnormalities.
Duration of the trial run is as follows:
When depressed center wheel is replaced
..................................................3 minutes or more
When starting daily work
....................................................1 minute or more
9. Use only properly rated depressed center wheels.
Use only depressed center wheels rated at
13,300/min or more.
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. 6)
Fig. 2

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. Turn the grinder "on". (Fig. 3)
While holding the grinder fi rmly, use one fi nger to slide
the switch to the "on" position.
3. Adjusting the number of revolution
Above models are equipped with an electronic
infi nite-variable-speed drive and can change the
number of revolution according to a use.
If you turn and set the dial scale (Fig. 4) to 6, the
number of revolution increases, and if you turn and
set it to 1, the number of revolution decreases.
Before use, set the number of revolution using the
dial. In so doing, refer to the following table as a rough
guide.
Dial Use
1 Polishing, fi nishing
2 Removal of paint or coat
3 Removal of rust
4 Removal of burrs
Grinding
5
Rough grinding Cutting
6
NOTE
Use caution not to turn the dial scale to any value
below 1 or above 6.
English
Switch
OFF
ON
Fig. 3
Tools
Radial grinding disc
Sanding disc
Depressed center
wheel
Depressed center
wheel
Diamond wheel
11