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6. Mounting the wheel guard
Be sure to mount the wheel guard at an angle that will
protect the operator's body from injury by a broken
wheel piece.
[Installing Wheel Guard] (Fig. 2)
○ Open and hold the lever, then install the wheel guard
so that the projection on the wheel guard aligns with
the recess in the packing gland.
○ Rotate the wheel guard to an angle suitable for use,
then release your fi nger from the lever.
○ Rotate the wheel guard left or right until it locks into
place.
Packing gland
Lever
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 11 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.
10
Wheel guard
Fig. 2
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. 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. Turn the grinder "on". (Fig. 3)
To switch on, slide the off -lock lever in the direction
of Ⓐ and press the switch lever (2 locations) in the
direction of Ⓑ as shown in Fig. 3. Release the switch
lever to switch off .
Switch 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 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.
Off -lock
lever
Ⓑ
Ⓐ
Fig. 3
