Grinder Operation - Hitachi G 10SR Manual De Instrucciones

English
7. Inspect the depressed center wheel carefully before mounting.
Thoroughly check that a specified depressed center wheel free of cracks and splits is
mounted. Make sure that the depressed center wheel is firmly clamped and has been
mounted in accordance with the instructions contained on page 13.
8. Test the grinder before using.
Before actually beginning the grinding work, test the grinder by first 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
on 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 13700 RPM or more for G10SR and 13300 RPM
or more for G12SR.
Using a depressed center wheel rated less can lead to wheel disintegration during
operation and serious bodily injury.
10.Check the lock pin.
Make sure that the lock pin is disengaged by pushing lock pin two or three times before
turning on the grinder.

GRINDER OPERATION

1. Hold the grinder firmly by its housing and side handle (Fig. 1).
The grinder produces a counterforce which must be controlled by firmly holding onto the
grinder.
2. Turn the grinder "on".
While holding the grinder firmly, use one finger to slide the switch to the "on" position.
3. Use light grinding pressure.
There is no need to press hard when grinding. Usually the grinder's own weight is
sufficient to allow the required light contact with the surface to be ground.
WARNING:
4. Use proper grinding angle.
Grind only with the wheel's edge by lifting the grinder 15° to 30°, as shown in Fig. 2.
CAUTION: Do not use the entire surface of the depressed center wheel. Use only the
edge of the depressed center wheel.
12
Do not press the grinder forcibly against the surface to be ground. Heavy
pressure can result in wheel breekage and serious injury. It can also
damage the surface being ground or damage the grinder's motor.