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Bosch PSR 14,4 Manual

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42
English
APPLICATIONS
Rotation and striking function
⅜ Drilling anchor holes
⅜ Drilling holes in concrete
⅜ Drilling holes in tile
Rotation only function
⅜ Drilling in steel or wood
(with optional accessories)
⅜ Tightening machine screws, wood screws
(with optional accessories)
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
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.
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. Mounting the drill bit (Fig. 1)
(1) To attach a drill bit (SDS-plus shank), fully pull the grip
in the direction of the arrow as shown in Fig. 1 and
insert the drill bit as far as it will go while manually
turning.
(2) By releasing the grip, the drill bit will be secured.
(3) To remove the drill bit, fully pull the grip in the
direction of the arrow and pull out the drill bit.
5. Installation of dust cup or dust collector (B)
(Optional accessories) (Fig. 2, Fig. 3)
When using a rotary hammer or upward drilling
operations attach a dust cup or dust collector (B) to
collect dust or particles for easy operation.
⅜ Installing the dust cup
Use the dust cup by attaching to the drill bit as shown
in Fig. 2.
When using a bit which has big diameter, enlarge the
center hole of the dust cup with this rotary hammer.
⅜ Installing dust collector (B)
When using dust collector (B), insert dust collector (B)
from the tip of the bit by aligning it to the groove on the
grip. (Fig. 3)
CAUTION:
⅜ The dust cup and dust collector (B) are for exclusive
use of concrete drilling work. Do not use them for
wood or metal drilling work.
⅜ Insert dust collector (B) completely into the chuck part
of the main unit.
⅜ When turning the rotary hammer on while dust
collector (B) is detached from a concrete surface, dust
collector (B) will rotate together with the drill bit. Make
sure to turn on the switch after pressing the dust cup
on the concrete surface. (When using dust collector
(B) attached to a drill bit that has more than 190 mm of
overall length, dust collector (B) cannot touch the
concrete surface and will rotate. Therefore please use
dust collector (B) by attaching to drill bits which have
166 mm, 160 mm, and 110 mm overall length.
⅜ Dump particles after every two or three holes when
drilling.
⅜ Please replace the drill bit after removing dust collector
(B).
6. Selecting the driver bit
Screw heads or bits will be damaged unless a bit
appropriate for the screw diameter is employed to
drive in the screws.
7. Confirm the direction of bit rotation (Fig. 4)
The bit rotates clociwise (viewed from the rear side) by
pushing the R-side of the reversing switch lever. The
L-side of the lever is pushed to turn the bit
counterclockwise.
HOW TO USE
CAUTION:
To prevent accidents, make sure to turn the switch off and
disconnect the plug from the receptacle when the drill pits
and other various parts are installed or removed. The
power switch should also be turned off during a work
break and after work.
1. Switch operation
(1) DH24PA
By pulling the trigger switch and depressing the
stopper, the switch is held in the ON position for
continuous operation. To turn the drill OFF, pull the
trigger switch again and release.
(2) DH24PB
The rotation speed of the drill bit can be controlled
steplessly by varying the amount that the trigger
switch is pulled. Speed is low when the trigger switch
is pulled slightly and increases as the switch is pulled
more. Continuous operation may be attained by
pulling the trigger switch and depressing the stopper.
To turn the switch OFF, pull the trigger switch again
to disengage the stopper, and release the trigger
switch to its original position.
2. Rotation + striking
This rotary hammer can be set to rotation and striking
mode by turning the change lever fully counter-
clockwise to the
mark. (Fig. 5)
(1) Mount the drill bit.
(2) Pull the trigger switch after applying the drill bit tip to
the drilling position. (Fig. 6)
(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. 6.
3. Rotation only
The rotary hammer can be set to rotation only mode
by rotating the change lever fully clockwise to the
mark. (Fig. 7)
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. 8)
… 43 …


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