DeWalt DC733 Manual Del Usuario página 38

EN GLI SH
SELECTING THE OPERATING MODE OR ADJUSTING THE
TORQUE (FIG. 5)
The collar of this tool has 15 positions for the
adjustment of the torque to suit the size of the screw
and the workpiece material. For torque adjustment,
refer to Screwdriving.
Select the drilling mode or torque by aligning the
symbol or number on the collar (e) with the indicator
(q) on the housing.
FORWARD/REVERSE SLIDER (FIG. 6)
To select forward or reverse rotation, use the
forward/ reverse slider (b) as shown (see arrows on
tool).
WARNING: To reduce the risk of
personal injury, always wait until the
motor has come to a complete standstill
before changing the direction of rotation.
TWO-GEAR SELECTOR (FIG. 7)
Your tool is fitted with a two-gear selector (f) to vary
the speed/torque ratio.
1 low speed/high torque
(drilling large holes, driving screws)
2 high speed/low torque
(drilling smaller holes)
For speed rates, refer to the technical data.
WARNING: To reduce the risk of
personal injury:
• Always push the two gear selector
completely forward or backward.
• Do not change gears at full speed or
during use.
Removing and Fitting the Chuck
(fi g. 8, 9)
DW907
1. Open the chuck jaws as far as possible.
2. Insert a screwdriver into the chuck and remove
the chuck retaining screw by turning clockwise
as shown in figure 8.
3. Tighten an hex key into the chuck and strike it
with a hammer as shown in figure 9. This will
loosen the chuck so that it can be unscrewed
by hand.
4. To refit the chuck, proceed in reverse order.
36
OPERATION
Instructions for Use
WARNING: To reduce the risk of
personal injury:
• Always observe the safety instructions
and applicable regulations.
• 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 minimise stalling on break-through,
progressively reduce the drill point
pressure towards the end of the
operation.
• Keep the motor running when pulling
the bit back out of a drilled hole. This
will help prevent jamming.
PRIOR TO OPERATION:
1. Make sure your battery pack is (fully) charged.
2. Insert the appropriate bit.
3. Mark the spot where the hole is to be drilled.
4. Select forward or reverse rotation.
SWITCHING ON AND OFF (FIG. 1, 6)
1. To run the tool, press the variable speed switch
(a). The pressure exerted on the variable speed
switch determines the tool speed.
2. To stop the tool, release the switch.
3. To lock the tool in the off position, move the
forward/reverse slider (b) to the central position.
WARNING: To reduce the risk of
personal injury the drill is equipped with
a brake to stop the tool as soon as the
variable speed switch is fully released.
Drill Operation
1. Select the desired speed/torque range using the
gear shifter to match the speed and torque to
the planned operation.
2. For WOOD, use twist bits, spade bits, power
auger bits or hole saws. For METAL, use high-
speed steel twist drill bits or hole saws. Use
a cutting lubricant when drilling metals. The
exceptions are cast iron and brass which should
be drilled dry.