DeWalt D21580 Original Instructions Manual page 42

E N GLIS H
2. Mark the spot where the hole is to be drilled.
OPERATION
Instructions for Use
WARNING: Always observe the safety
instructions and applicable regulations.
WARNING: To reduce the risk
of serious personal injury, turn
tool off and disconnect tool from
power source before making any
adjustments or removing/installing
attachments or accessories.
WARNING:
• Be aware of the location of pipework
and wiring.
• Apply only a gentle pressure to
the tool. Excessive force does not
speed up drilling but decreases tool
performance and may shorten tool life.
• To reduce effects of vibration make
sure the environment temperature is
not too cold, machine and accessory
is well maintained and the workpiece
size is suitable for this machine.
Proper Hand Position (fi g. 1, 6)
WARNING: To reduce the risk of
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
Proper hand position requires one hand on the side
handle (e), with the other hand on the main
handle (y).
Switching On and Off (fi g. 1)
To run the tool, press the variable speed switch (a).
The pressure exerted on the variable speed switch
determines the tool speed.
For continuous operation, press and hold down the
switch (a), press the lock-on button (b) and release
the switch.
To stop the tool, release the switch.
To stop the tool in continuous operation, press the
switch briefly and release it. Always switch off the
tool when work is finished and before unplugging.
40
General Tips for Drilling with
Diamond Core Bits
WARNING: Follow the core bit or
manufacturer's recommendations for
using the accessory.
WARNING: When using the machine in
handheld applications, we recommend
to assemble a centredrill into the core
bit to locate the periphery of the hole to
be drilled more accurately. When using
the machine in stationary applications,
i.e. on a stand, the use of a centredrill is
not necessary.
1. Assemble the centredrill into the core bit.
The centredrill is mounted into an adaptor fitted
between the spindle of the machine and the
core bit.
2. Place the centredrill on the spot and switch on
the machine.
3. Drill at low speed until the core penetrates the
surface approx. 5-10 mm.
4. Remove and unplug the machine.
5. Remove the centredrill from its holder.
6. Plug the machine in and insert the core bit into
the workpiece.
7. Continue drilling, increasing to full speed and
drill to the desired depth.
WARNING: Do not mix or stir
inflammable liquids labelled accordingly.
Dry Drilling
1. Make sure that the end cap is fitted in the water
supply fitting (D21582).
2. Connect the machine to an appropriate dust
extraction system.
3. Proceed as described above.
Wet Drilling
D21582
1. Connect the machine to an appropriate water
supply system.
2. Adjust the water flow as necessary.
3. Proceed as described above.
WARNING: If any water comes out
of the drainage hole at the gear neck,
stop the work immediately and have
the machine repaired by an authorized
repair agent.