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Assembly And Operation; Applications; Prior To Operation; Practical Cut-Off Machine Application - Hitachi CC 12Y Safety Instructions And Instruction Manual

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English

APPLICATIONS

Cutting sheet metal, concrete, cinder blocks,
reinforcing rods, concrete wire mesh, corrugated
floor and ceiling forms, etc.

PRIOR TO OPERATION

1.
Power source
Ensure that the power source to be utilized
conforms to the power source requirements
specified on the product nameplate.
2.
Power switch
Ensure that the switch is in the OFF position. If the
plug is connected to a receptacle while the switch
is in the ON position, the power tool will start
operating immediately and can cause serious
injury.
3.
Extension cord
When the work area is far away from the power
source, use an extension cord of sufficient
thickness and rated capacity. The extension cord
should be kept as short as practicable.
WARNING:
Damaged cord must be replaced or
repaired.
4.
Check the receptacle
If the receptacle only loosely accepts the plug, the
receptacle must be repaired. Contact a licensed
electrician to make appropriate repairs.
If such a fautly receptacle is used, it may cause
overheating, resulting in a serious hazard.
5.
Confirming condition of the environment:
Confirm that the work site is placed under
appropriate conditions conforming to prescribed
precautions.
6.
Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent
injury should the cutting wheel shatter during
operation. Ensure that the guard is properly fitted
and fastened before commencing cutting
operation. By slightly loosening the setting screw,
the wheel guard can be turned and set at any
desired angle for maximum operational
effectiveness. Ensure that the setting screw is
thoroughly tightened after adjusting the wheel
guard.
7.
Cutting wheel
Ensure that the cutting wheel to be utilized is the
correct type and free of cracks or surface defects.
Also ensure that the cutting wheel is properly
mounted and the wheel nut is securely tightened.
Refer to the section on "Cutting Wheel Assembly".
8

ASSEMBLY AND OPERATION

8.
Conducting a trial run
Before commencing cutting operation, the
machine should be given a trial run in a safe area
to ensure that it is properly assembled and that
the cutting wheel is free from obvious defects.
Recommended trial runs durations are as follows:
After replacing
cutting wheel .......... 3 minutes or more
Prior to starting
routine work ........... 1 minute or more
9.
Confirming the lock pin.
Confirm that the lock pin is disengaged by pushing
lock pin two or three times before switching the
power tool on (See Fig. 2).
PRACTICAL CUT-OFF MACHINE
APPLICATION
1.
Cutting force
To prolong the life of the machine and ensure a
first class finish. It is important that the machine
should not be overloaded by applying too much
force.
2.
Precautions immediately after finishing operation
After switching off the machine, do not put it down
until the cutting 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.
CAUTION:
After operation, always place the machine so that
the cutting wheel faces upward.
When the machine is not in use, the power source
should be disconnected.

CUTTING WHEEL ASSEMBLY

1.
Assembling (Fig. 2, 3)
(1) Turn the machine upside down so that the spindle
is facing upward.
(2) Mount the wheel washer onto the spindle.
(3) Fit the protuberance of the cutting wheel onto the
wheel washer.
(4) Put the inner washer on the cutting wheel, and
screw the wheel nut onto the spindle.
(5) Insert the lock pin to prevent rotation of the spindle,
and tighten the wheel nut with accessory wrench,
as shown in Fig. 3.

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