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DeWalt D21720 Manual

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22
ENGLISH
Conductor size (mm
2
) Cable rating (Amperes)
0.75 6
1.00 10
1.50 15
2.50 20
4.00 25
Cable length (m)
7.5 15 25 30 45 60
Voltage Amperes Cable rating (Amperes)
115 0-2.0 66 66 610
2.1 - 3.4 6 6 6 6 15 15
3.5 - 5.0 6 6 10 15 20 20
5.1 - 7.0 10 10 15 20 20 25
7.1 - 12.0 15 15 20 25 25 -
12.1 - 20.0 20 20 25 - - -
230 0 - 2.0 6 6 6 6 6 6
2.1 - 3.4 6 6 6 6 6 6
3.5 - 5.0 6 6 6 6 10 15
5.1 - 7.0 10 10 10 10 15 15
7.1 - 12.0 15 15 15 15 20 20
12.1 - 20.0 20 20 20 20 25 -
Assembly and adjustment
Prior to assembly and adjustment always
unplug the tool.
Selecting the operating mode (fig. B)
Percussion drill can be used in two operating modes:
Rotary drilling:
for steel, wood and plastics.
Percussion drilling:
simultaneous rotating and impacting for
concrete and masonry drilling operations.
• Select the required operating mode by rotating
the mode selector (5) to the required position.
Inserting and removing a bit (fig. A)
Keyless chuck
• Open the chuck by turning the sleeve (9)
counterclockwise and insert the bit shank.
• Tighten firmly by turning the sleeve clockwise.
Keyed chuck
• Open the chuck by turning the sleeve (9)
counterclockwise and insert the bit shank.
• Put the chuck key (10) into each hole in the side
of the chuck and turn clockwise until tight.
• To remove the bit, proceed in reverse order.
Fitting the side handle (fig. A)
The side handle (6) can be fitted to suit both RH-
and LH-users.
Always use the Drill with the side handle
properly assembled.
• Loosen the side handle.
• For RH-users, slide the side handle clamp over
the collar behind the chuck, handle at the left.
• For LH-users, slide the side handle clamp over
the colar behind the chuck, handle at the right.
• Rotate the side handle to the desired position
and tighten the handle.
Setting the drilling depth (fig. C)
• Insert the required drill bit into the chuck.
• Slacken the side handle (6).
• Fit the depth adjustment rod (7) through the hole
in the side handle clamp.
• Adjust the drilling depth as shown.
• Tighten the side handle.
Forward/reverse slider (fig. A)
• To select forward or reverse rotation, use the
forward/reverse-switch (3) (see arrow on tool).
Always wait until the motor has come to
a complete standstill before changing the
direction of rotation.
Two gear selector (fig. D)
This tool is fitted with a two gear selector (4) to vary
the speed/torque ratio.
• Release the ON/OFF-switch and select the
required position as the drill coasts to a stop.
Always align the selector arrow with the gear
symbol on the gear housing:
1 low speed/high torque
(drilling large holes or driving large screws)
2 high speed/low torque
(smaller holes, drilling in wood)
… 22 …


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