Manual Hitachi G15YFC (page 8 of 68) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

SPECIFICATIONS

*Be sure to check the nameplate on product as it is subject to change by areas.

Electronic Control

The grinder has an electronic speed control which

provides:

⅜ full speed at all times in the range up to rated load.

⅜ soft-start.

⅜ variable speed (G12VA, G13VA, G15VA)

⅜ Kickback Protection

The kickback protection feature cuts off the power

to the motor and stops the power tool in the event

of a sudden drop in the rotational speed of the

wheel during operation (for example, if the wheel

locks during cutting operation, etc.).

⅜ 0 Voltage Re-start Protection

The 0 voltage restart protection feature prevents the

power tool from restarting after the power has been

temporarily cut off during operation.

⅜ Overload Protection

The overload protection feature shuts off the power

to the motor in the event of overloading of the

motor or a conspicuous reduction in rotational speed

during operation.

NOTE:

The grinder is equipped with a rotational speed

control circuit. The rotational speed may fluctuate

slightly due to the conditions of use and working

voltage.

STANDARD ACCESSORIES

(1) Depressed center wheel .......................................... 1

(2) Wrench ........................................................................ 1

(3) Side handle ................................................................ 1

(4) Hex. bar wrench ....................................................... 1

Standard accessories are subject to change without

notice.

APPLICATIONS

⅜ Removal of casting fin and finishing of various

types of steel, bronze and aluminum materials and

castings.

⅜ Grinding of welded sections or sections cut by

means of a cutting torch.

⅜ Grinding of synthetic resins, slate, brick, marble, etc.

⅜ Cutting of synthetic concrete, stone, brick, marble,

and similar materials.

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms

to the power requirements specified on the product

nameplate.

NOTE:

When connected to the power supply, the built-in

electronic control circuit shifts to standby status and

the grinder becomes slightly warm, but this is not

a malfunction.

CAUTION

Do not operate from a direct current power source,

engine generator, booster or any other type of

transformer. Doing so may not only cause damage

to the grinder, but may lead to accidents.

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.

When the kickback protection, 0 voltage re-start

protection or overload protection feature has been

activated, return the power switch to the OFF position

and wait for 1 second or more before re-starting

the power tool.

3. Extension cord

When the work area is removed from the power

source, use an extension cord of sufficient 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 be

shattered during operation. Ensure that the wheel

guard is properly fitted and fastened before

commencing grinding operation.

[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.)

Model G12VA G13VA G15VA G13YF G15YF

Voltage (by areas)* (110V, 230V)

Power Input* 1500 W

No-load speed* 2800–10500 min

-1

2300–9000 min

-1

10500 min

-1

9000 min

-1

Wheel

outer dia. × hole dia.

115 × 22.23 mm 125 × 22.23 mm 150 × 22.23 mm 125 × 22.23 mm 150 × 22.23 mm

peripheral speed 80 m/s

Weight (only main body) 2.0 kg

– 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;

– Always use eye and ear protection. Other personal

protective equipment such as dust mask, gloves,

helmet and apron should be worn;

– Pay attention to the wheel that continues to rotate

after the tool is switched off.

01Eng_G12VA_WE 4/20/10, 17:357

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Hitachi G15YFC Manual

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