Handleiding Hitachi VB16Y (pagina 12 van 70) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans)

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⅜ When bending multiple rebars at one time, some

may come off the bending roller and guide, etc.,

and therefore exercise caution and set them

horizontally.

⅜ If you bend the rebar with a large angle while

placing your hand onto it, there is a fear of getting

Fig. 16

Condition of rebar

Dial indication 45° 90° 135° 180°

180°135°90°45°

In bending the rebar of 10mm, 12mm, and 16mm

diameters, a difference takes place in the bending

angle even in the same dial position depending

upon the difference of rebar’s thickness. Slightly

change a position of the setting dial depending

upon the rebar’s diameter even with the same

bending angle as illustrated in the top diagram on

the left column. (Fig. 11)

Size of rebar Colors of indicated marks

ø10 mm White

ø12 mm Red

ø16 mm Yellow

NOTE

Even at the same dial setting position, the bending

angle can sometimes differ if the diameter or hardness

of the rebar is different. Use the angle marks merely

as a rough guideline.

2. Ordinary bending.

(1) Set the unit in the position with the turntable up

as shown in Fig. 12.

(2) Make sure that the cover is closed.

(3) Set the setting dial at the desired angle.

(4) Place the rebar on the stopper of the center plate

and set it correctly as shown in Fig. 9.

(5) Pull the switch trigger and bent the rebar.

(6) Continue pulling the switch trigger untill the motor

makes reverse rotation and the bending roller starts

to return. (Once the bending roller starts to return,

it will automatically return all the way to the home

position even if the switch trigger is released.)

3. Bending by eye measurement.

By pulling the switching trigger little by little, you

can bend the rebar to your desired angle by eye

measurement in addition to the dial setting.

(1) Set the setting dial to a larger angle than you

desire.

(2) Pull the switch trigger lightly and bend the rebar

slowly.

(3) When the rebar is bent to the desired angle, stop

pulling the switch. If the bar is still small of the

desired angle, pull the switch again.

(4) Remove the rebar after bending has been finished.

Then, pull the switch once more and return the

bending roller to the home position. (Continue

pulling the switch until the bending roller begins

reverse rotation.)

4. Removing rebar during bending operation

When bending out at a low speed in “bending by

eye measurement”, the rebar can sometimes get

caught in the bending roller due to its own flexure.

If this occurs, you can return the bending roller to

the home position by pulling the switch again after

setting the setting dial to the “return” position. This

is the same method used to remove the rebar when

it gets caught during cutting operation. (Fig. 13)

5. Using hole to fix unit in place.

A hole is provided at the center of the unit to fix

and stabilize it. This hole comes in quite handy

when used in the following manner. (Fig. 14.)

⅜ For bending operation when the unit is fixed to a

work bench.

This hole will prove very convenient when the unit

is bolted to a suitable work bench. (Bolt size M10,

less than W3/8.)

MAINTENANCE AND INSPECTION

WARNING!

To prevent accidents, always be sure to turn the switch

OFF and unplug the power cord from the receptacle.

1. Inspecting the mounting screws:

Regularly inspect all mounting screws and ensure

that they are properly tightened. Should any of the

screws be loose, retighten them immediately. Failure

to do so could result in serious hazard.

2. Maintenance of the motor

The motor unit winding is the very “heart” of the

power tool. Exercise due care to ensure the winding

does not become damaged and/or wet with oil or

water.

3. Inspecting the carbon brushes (Fig. 15)

The motor employs carbon brushes which are

consumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brushes with new ones which have the same carbon

brush No. shown in the figure when they become

worn to or near the “wear limit”. In addition, always

keep carbon brushes clean and ensure that they

slide freely within the brush holders.

your hand caught in by the fold-back reaction of

the rebar. Never place your hand onto the position

where the rebar may fold back.

1. Setting bending angles by setting dial.

The bar can be bent according to the angles indicated

on the setting dial, as shown in Fig. 16.

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