Bedienungsanleitung Hitachi GP3V (Seite 10 von 64) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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(3) Before starting, test the machine with the wheel

pointed in a safe direction.

2. Precautions on operation

(1) Lightly press the wheel to the material to be ground.

When grinding materials, high-speed revolution is

necessary. Use a hand grinder with high-speed

revolution, minimizing the pressing force.

CAUTION:

When using the tool at any value except the full

speed (Dial scale 6), the motor cannot be sufficiently

cooled due to the decreased number of revolution.

This could result in the risk of burning and damaging

the motor before an overload protective mechanism

starts to function.

Make sure that you use the tool by lightly applying

it to the surface of material when you use it at any

value except the full speed (Dial scale 6).

(2) Dressing the wheel

After attaching a wheel, correct deflection of the

wheel center by using a dresser. If the wheel center

is eccentric, not only precise finishing cannot be

achieved but also grinder vibration increases,

lowering grinder accuracy and durability.

A clogged or worn wheel will spoil the finishing

surface or lower grinding efficiency. Occasionally

dress the wheel by applying the dresser.

WHEEL SELECTING METHOD

Types of wheels are varied according to the materials to

be ground. Select a wheel appropriate for the material to

be ground.

The following table is an outline of wheels and materials

to be ground.

6. Adjusting the number of revolution

These models are equipped with an electronic

infinite-variable-speed drive and can change the

number of revolution according to a use.

If you turn and set the dial scale (Fig. 6) to 6, the

number of revolution increases, and if you turn and

set it to 1, the number of revolution decreases.

Before use, set the number of revolution using the

dial. In so doing, refer to the following table as

a rough guide.

NOTE: Use caution not to turn the dial scale to any value

below 1 or above 6.

7. 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.

8. Using the side handle (Fig. 3)

Be sure to use the side handle to avoid the risk

of severe electrical shock.

Attach the side handle to the machine as follows.

(1) Loosen the side handle grip and insert the side

handle to the nose bracket part of the machine from

the flange part of the side handle sleeve.

(2) Set the side handle to a position that is suited to

the operation and then securely tighten the side

handle grip.

HOW TO USE

1. Switching operation

(1) When moving the switch lever to the right (ON

side), power is applied; when moving it to the left

(OFF side), power is switched off.

(2) When first turning on the switch after installing a

new wheel, hold the grinder away from your body

to avoid any danger of a wheel shattering due to

an imperfection.

GP5V (whenr= 15 mm)

d3 mm, 3.175 mm (1/8”) 6 mm, 6.35 mm (1/4”) 8 mm

5 mm 6 mm 8 mm 10 mm 13 mm 16 mm 20 mm 25 mm 32 mm 38 mm 25 mm 32 mm 38 mm

10 mm 13 mm 16 mm 13 mm 40 mm 40 mm 25 mm 25 mm 13 mm 7 mm 32 mm 25 mm 19 mm

GP3V (whenr= 15 mm)

d3 mm, 3.175 mm (1/8”) 6 mm, 6.35 mm (1/4”) 8 mm

D5 mm6 mm 8 mm 10 mm 13 mm 16 mm 20 mm 25 mm 25 mm

L 10 mm 13 mm 16 mm 13 mm 40 mm 40 mm 25 mm 25 mm 32 mm

Dial Use

Rotation speed (min

-1

)

GP 3V GP 5V

1 Polishing, finishing 7000 2000

Removal of paint or

11400 3250

coat

3 Removal of rust 15800 4500

4 Removal of burrs 20200 5800

5 Grinding 24600 7050

6 Rough grinding 29000 8300

01Eng_GP3V_WE 6/28/12, 14:109

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