DeWalt D25712-XE Instruction Manual page 9

WARNING: The use of a residual current device (RCD) protected supply with a
rated residual current of 30 mA or less is recommended. The use of a RCD reduces
the risk of electric shock.
Hold tool with both hands to maximize control.
Trigger Switch (Fig. 1)
To turn the tool on, depress the trigger switch (A).
To stop the tool, release the trigger switch.
The lock-on slider (B) allows the trigger switch (A) to be locked on in chiselling mode
only. If the lock-on button is activated in drilling mode, as a feature the tool will switch
off automatically.
To turn the tool on, press the trigger switch (A).
To stop the tool, release the switch.
For continuous operation, press and hold down the switch (A), slide the lock-on
button (B) upwards and 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.
Proper Hand Position (Fig. 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 (C), with the other
hand on the main handle (D).
Hammerdrilling
To turn the tool on, press the on/off
switch (A).
To stop the tool, release the switch.
FIG. 6
D
C
Drilling with a Solid Bit (Fig. 1)
1. Insert the appropriate drill bit.
2. Set the mode selector switch (F) to the hammerdrilling position.
3. Set the electronic speed and impact control dial (G).
4. Fit and adjust the side handle (C).
5. Mark the spot where the hole is to be drilled.
6. Place the drill bit on the spot and switch on the tool.
7. Always switch off the tool when work is finished and before unplugging.
Drilling with a Core Bit (Fig. 1)
1. Insert the appropriate core bit.
2. Assemble the centerdrill into the core bit.
3. Set the mode selector switch (F) to the hammerdrilling position.
4. Turn the electronic speed and impact control dial (G) to a medium or high speed
setting.
5. Fit and adjust the side handle (C).
6. Place the centerdrill on the spot and switch on the tool. Drill until the core
penetrates into the concrete approx. 1 cm.
7. Stop the tool and remove the centerdrill. Place the core bit back into the hole and
continue drilling.
8. When drilling through a structure thicker than the depth of the core bit, break
away the round cylinder of concrete or core inside the bit at regular intervals.
To avoid unwanted breaking away of concrete around the hole, first drill a hole
the diameter of the centerdrill completely through the structure. Then drill the
cored hole halfway from each side.
9. Always turn the tool off when work is finished and before unplugging.
Chipping and Chiselling (Fig. 1)
1. Insert the appropriate chisel and rotate it by hand to lock it into one of
18 positions.
2. Set the mode selector switch (F) to the hammering only position.
3. Set the electronic speed and impact control dial (G).
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