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Hitachi G15YC2 Manual

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English
[How to attach and adjust the wheel guard](Fig. 2)
⅜ Set the wheel ass’y to the packing gland.
⅜ Tighten M5 screw to secure the wheel guard while
the lever is in closed position.
⅜ Perform the adjustment of the wheel guard while
the lever is released. (Loosen M5 screw and readjust
if the wheel guard does not rotate smoothly.)
⅜ After adjustment, if grinder operation is required,
perform the operation only after setting the lever
in closed position.
⅜ Lubricate the sliding section of the set piece (B) and
the lever if the lever does not move smoothly.
5. Ensure that mounted wheels and points are fitted
in accordance with the manufacturer’s instructions.
Ensure that the depressed center wheel to be utilized
is the correct type and free of cracks or surface
defects. Also ensure that the depressed center wheel
is properly mounted and the wheel nut is securely
tightened. Refer to the section on “ASSEMBLING
AND DISASSEMBLING ACCESSORIES”.
Ensure that blotters are used when they are provided
with the bonded abrasive product and when they
are required.
Do not use separate reducing bushings or adaptors
to adapt large hole abrasive wheels.
For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enough to accept the spindle length.
Do not use cutting off wheel for side grinding.
6. Conducting a trial run
Ensure that the abrasive products are correctly
mounted and tightened before use and run the tool
at no-load for 30 seconds in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected.
If this condition occurs, check the machine to
determine the cause.
7. Confirm the push button.
Confirm that the push button is disengaged by
pushing push button two or three times before
switching the power tool on (See Fig. 3).
8. Fixing the side handle.
Screw the side handle into the gear cover.
9. Caution when using near welding equipment
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.
10. RCD
The use of a residual current device with a rated
residual current of 30mA or less at all times is
recommended.
PRACTICAL GRINDER APPLICATION
1. Pressure
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.
2. Grinding angle
Do not apply the entire surface of the depressed
center wheel to the material to be ground. As
shown in Fig. 4, the machine should be held at an
angle of 15° – 30° so that the external edge of the
depressed center wheel contacts the material at an
optimum angle.
3. To prevent a new depressed center wheel from
digging into the workpiece, initial grinding should
be performed by drawing the grinder across the
workpiece toward the operator (Fig. 4 direction B).
Once the leading edge of the depressed center
wheel is properly abraded, grinding may be
conducted in either direction.
4. Switch operation
[When the switch has locking mechanism]
Switch ON: To switch on, slide the lock lever in the
direction of
and press the paddle
lever in the direction of
as shown
in Fig. 5-a.
Furthermore, slide the lock lever in the
direction of
shown in Fig. 5-b while
pressing the paddle lever to lock and
enable continuous operation.
Switch OFF:To release the locking mode, press the
paddle lever in the direction of
shown in Fig. 5-a, and release the
paddle lever to switch off.
[When the switch has no locking mechanism]
To switch on, slide the lock lever in the direction
of and press the paddle lever in the direction
of
as shown in Fig. 5-a. Release the paddle lever
to switch off.
NOTE
The paddle lever can not be locked.
5. Precautions immediately after finishing operation
The wheel continues to rotate after the tool is
switched off.
After switching off the machine, do not put it down
until the depressed center wheel has come to a
complete stop. Apart from avoiding serious
accidents, this precaution will reduce the amount
of dust and swarf sucked into the machine.
CAUTIONS
⅜ Check that the work piece is properly supported.
⅜ Ensure that ventilation openings are kept clear when
working in dusty conditions.
If it should become necessary to clear dust, first
disconnect the tool from the mains supply (use non-
metallic objects) and avoid damaging internal parts.
⅜ Ensure that sparks resulting from use do not create
a hazard e.g. do not hit persons, or ignite flammable
substances.
⅜ Always use eye and ear protection.
Other personal protective equipment such as dust
mask, gloves, helmet and apron should be worn
when necessary.
If in doubt, wear the protective equipment.
⅜ When the machine is not in use, the power source
should be disconnected.
01Eng_G13YC2_WE 1/17/12, 8:2810
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