Prior To Operation - Hitachi G 10SQ Handling Instructions Manual

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized conforms to the power requirements specifi ed
on the product nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle
while the power switch is in the ON position, the power tool will start operating immediately,
which could cause a serious accident.
3. Extension cord
When the work area is removed from the power source, use an extension cord of suffi cient
thickness and rated capacity. The extension cord should be kept as short as practicable.
4. Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent injury should the depressed center
wheel shatter during operation. Ensure that the guard is properly fi tted and fastened before
commencing grinding operation.
By slightly loosening the setting screw, the wheel guard can be turned and set at any
desired angle for maximum operational eff ectiveness. Ensure that the setting screw is
thoroughly tightened after adjusting the wheel guard.
5. Ensure that mounted wheels and points are fi tted 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 THE DEPRESSED CENTER WHEEL".
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 fi tted 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 is 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. Confi rm the push button
Confi rm that the push button is disengaged by pushing push button two or three times
before switching the power tool on (See Fig. 2 on page 26).
8. Fixing the side handle
Screw the side handle into the gear cover.
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