Operation - Hilti ST 2500 Operating Instructions Manual

6. Operation

Use clamps or a vice to secure the work-
piece. The workpiece is thus held more
securely than by hand and both hands remain
free to operate the tool.
The screwdriving procedure may
●
cause the material to splinter.
Splintering material may injure the
●
eyes.
Wear eye protection.
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6.1 Setting forward / reverse rotation
The forward / reverse selector pushbutton can be used
to select the desired direction of rotation. An interlock
prevents operation of the pushbutton while the motor
is running.
– Pushbutton moved to the right (as seen with tool in
working position) = forwards rotation.
– Pushbutton moved to the left (as seen with tool in
working position) = reverse rotation.
6.2 Switching on / off
1. Plug the supply cord into the electric socket.
2. Press the control switch slowly. The speed of the tool
can thus be varied between 0 and maximum speed.
6.3 Lockbutton for sustained operation
Use of the lockbutton permits sustained operation (motor
running constantly) without need to maintain pressure
on the control switch.
6.3.1 Switching on in sustained operating mode
1. Press the control switch as far as it will go.
2. Press the lockbutton while maintaining pressure
on the control switch and then release the control
switch.
6.3.2 Switching off when running in sustained mode
1. Press the control switch. The lockbutton returns to
its original position.
6.4 Fitting the depth gauge
1. Unplug the supply cord from the electric socket.
2. Insert the tip of a screwdriver in the gap between the
tool and the protective sleeve. Pry the protective sleeve
away from the tool by turning the screwdriver.
3. Pull the protective sleeve off toward the front end of
the tool.
4. Push the depth gauge onto the tool from the front.
6.5 Adjusting the depth gauge
6.5.1 Adjusting the ST 2500 depth gauge
The depth gauge is used when driving screws with seal-
ing washers.
Printed: 07.07.2013 | Doc-Nr: PUB / 5070744 / 000 / 00
-CAUTION-
Use a depth gauge suitable for the applicable sealing
washer diameter (accessory).
The depth gauge can be adjusted to ensure correct com-
pression of the sealing washer under the head of the
screw.
To decrease compression of sealing washer
1. Turn the depth gauge to the right (II).
To increase compression of sealing washer
1. Turn the depth gauge to the left. Compression of the
screw seal is increased (± 0.25 mm /
stop) (III).
6.5.2 Adjusting the SD 2500 depth gauge
By adjusting the depth gauge, the screw head can be
driven flush, countersunk or left projecting (± 0.25 mm
/ 1 / in per click stop) (III).
100
To increase the depth to which the screw is driven
1. Turn the depth gauge to the left.
To decrease the depth to which the screw is driven
1. Turn the depth gauge to the right
6.6 Removing the depth gauge
1. Pull the depth gauge off the tool toward the front.
6.7 Changing bits
6.7.1 Changing bits with the ST 2500
" hexagon type (for sockets, bit
The chuck is of the 1 /
4
holders, bits, etc.). This size is standardized (DIN 3126/
ISO 1173). The sockets, bit holders and bits are retained
in the chuck by a sliding sleeve mechanism.
1. Pull the depth gauge off the tool toward the front.
2. Pull the sleeve to the rear and hold it in this position.
3. The bit can then be pulled out or a different bit insert-
ed.
4. Release the sleeve and allow it to return to its origi-
nal position.
5. Refit the depth gauge to the tool.
6.7.2 Changing bits with the SD 2500
" hexagon type (for bit holders,
The chuck is of the 1 /
4
bits, etc.). This size is standardized (DIN 3126/ ISO 1173).
The bit holders and bits are retained in the chuck by a
spring mechanism.
1. Pull the depth gauge off the tool toward the front.
2. The bit (long bit, bit holder, bit holder with plastic part)
can then be pulled out or a different bit inserted.
3. Refit the depth gauge to the tool.
6.8 Removing a previously driven screw
1. Pull the depth gauge off the tool toward the front.
2. Bring the forward / reverse pushbutton into the "reverse"
position.
3. The tool can now be used to remove the screw.
en
1 / in per click
100
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