Handleiding Hitachi DH28PC (pagina 13 van 72) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans)

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2. Rotation + hammering

This rotary hammer can be set to rotation and

hammering mode by pressing the push button and

turning the change lever to the

mark (Fig. 6).

Turn the grip slightly and confirm that the clutch

has been engaged with a click.

(1) Mount the drill bit.

(2) Pull the trigger switch after applying the drill bit

tip to the drilling position. (Fig. 7)

(3) Pushing the rotary hammer forcibly is not necessary

at all. Pushing slightly so that drill dust comes out

gradually is sufficient.

CAUTION:

When the drill bit touches construction iron bar, the

bit will stop immediately and the rotary hammer

will react to revolve. Therefore grip the side handle

and handle tightly as shown in Fig. 7.

3. Rotation only

This rotary hammer can be set to rotation only

mode by pussing the push button and turning the

change lever to the

mark. (Fig. 8)

Turn the grip slightly and confirm that the clutch

has been engaged with a click.

To drill wood or metal material using the drill chuck

and chuck adapter (optional accessories), proceed

as follows.

Installing drill chuck and chuck adapter: (Fig. 9)

(1) Attach the drill chuck to the chuck adapter.

(2) The part of the SDS-plus shank is the same as the

drill bit. Therefore, refer to the item of “Mounting

the drill bit” for attaching it.

CAUTIONS:

⅜ Application of force more than necessary will not

only expedite the work, but will deteriorate the tip

edge of the drill bit and reduce the service life of

the rotary hammer in addition.

⅜ Drill bits may snap off while withdrawing the rotary

hammer from the drilled hole. For withdrawing, it

is important to use a pushing motion.

⅜ Do not attempt to drill anchor holes or holes in

concrete with the machine set in the rotation only

function.

⅜ Do not attempt to use the rotary hammer in the

rotation and hammering function with the drill chuck

and chuck adapter attached. This would seriously

shorten the service life of every component of the

machine.

4. When driving machine screws (Fig. 10)

First, insert the bit into the socket in the end of

chuck adapter (D).

Next, mount chuck adapter (D) on the main unit

using procedures described in 4 (1), (2), (3), put the

tip of the bit in the slots in the head of the screw,

grasp the main unit and tighten the screw.

CAUTIONS:

⅜ Exercise care not to excessively prolong driving

time, otherwise, the screws may be damaged by

excessive force.

⅜ Apply the rotary hammer perpendicularly to the

screw head when driving the screw; otherwise, the

screw head or bit will be damaged, or driving force

will not be fully transferred to the screw.

⅜ Do not attempt to use the rotary hammer in the

rotation and hammering function with the chuck

adapter and bit attached.

5. When driving wood screws (Fig. 10)

(1) Selecting a suitable driver bit

Employ cross-recessed screws, if possible, since the

driver bit easily slips off the heads of slotted-head

screws.

(2) Driving in wood screws

⅜ Prior to driving in wood screws, make pilot holes

suitable for them in the wooden board. Apply the

bit to the screw head grooves and gently drive the

screws into the holes.

⅜ After rotating the rotary hammer at low speed for

a while until the wood screw is partly driven into

the wood, squeeze the trigger more strongly to

obtain the optimum driving force.

CAUTION:

Exercise care in preparing a pilot hole suitable for

the wood screw taking the hardness of the wood

into consideration. Should the hole be excessively

small or shallow, requiring much power to drive

the screw into it, the thread of the wood screw may

sometimes be damaged.

6. Hammering only

This rotary hammer can be set to hammering only

mode by pressing the push button and turning the

change lever to the

mark (Fig. 11).

(1) Mount the bull point or cold chisel.

(2) Press the push button and set the change lever to

mark. (Fig. 12)

The rotation is released, turn the tool and adjust

the tool to desired position. (Fig. 13)

(3) Turn the change lever to

mark. (Fig. 11)

Then bull point or cold chisel is locked.

7. Using the stopper (Fig. 14)

(1) Loosen the wing bolt, and insert the stopper into

the mounting hole on the side handle.

(2) Adjust the stopper position according to the depth

of the hole and tighten the wing bolt securely.

8. How to use the drill bit (taper shank) and the taper

shank adapter

(1) Mount the taper shank adapter to the rotary hammer.

(Fig. 15)

(2) Mount the drill bit (taper shank) to the taper shank

adapter. (Fig. 15)

(3) Turn the switch ON, and drill a hole in prescribed

depth.

(4) To remove the drill bit (taper shank), insert the

cotter into the slot of the taper shank adapter and

strike the head of the cotter with a manual hammer

supporting on a rests. (Fig. 16)

9. Using the side handle

When you wish to change a position of the side

handle, turn grip of the side handle counterclockwise

to loosen it, and then fasten it firmly.

CAUTION:

When boring a hole, there can be a case where the

machine attempts to rotate by the reaction at the

time of penetrating a concrete wall and/or when a

tip of the blade comes in contact with the rebar.

Firmly fasten the side handle and hold the machine

with both of your hands. Unless you hold it securely,

an accident can occur.

01e_DH28PC_WE.p65 5/18/11, 9:4912

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