DeWalt DCD920 Traducido De Las Instrucciones Originales página 45

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.
Proper Hand Position (fi g. 10)
WARNING: To reduce the risk of
serious personal injury, ALWAYS
use proper hand position as shown
in figure 10.
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 main
handle (i), with the other hand on the side handle (h).
Drill Operation
1. Select the desired speed/torque range using
the gear shifter to match the speed and torque
to the planned operation. Set the mode control
collar to the drill symbol.
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.
3. Always apply pressure in a straight line with the
bit. Use enough pressure to keep the drill bit
biting, but do not push hard enough to stall the
motor or deflect the bit.
4. Hold tool firmly with both hands to control the
twisting action of the drill.
5. IF DRILL STALLS, it is usually because it
is being overloaded. RELEASE TRIGGER
IMMEDIATELY, remove drill bit from work,
and determine cause of stalling. DO NOT
CLICK TRIGGER OFF AND ON IN AN
ATTEMPT TO START A STALLED DRILL –
THIS CAN DAMAGE THE DRILL.
6. Keep the motor running when pulling the bit
back out of a drilled hole. This will help prevent
jamming.
Screwdriver Operation (fi g. 4–6)
1. Select the desired speed/torque range using the
three-speed gear shifter (g) on the top of tool
to match the speed and torque to the planned
application. Initially set the torque adjustment
collar (e) at a lower setting to ensure the
fastener to be set to your specification.
NOTE: Use the lowest torque setting required
to seat the fastener at the desired depth. The
lower the number, the lower the torque output.
2. Rotate the mode control collar (f) so the screw
symbol is aligned with the arrow.
3. Reset the torque adjustment collar (e) to the
appropriate number setting for the torque
desired. Make a few practice runs in scrap or
unseen areas to determine the proper position
of the torque adjustment collar.
NOTE: The torque adjustment collar may be
set to any number at any time. However, the
torque adjustment collar is only engaged during
screwdriving mode and not in drill and hammerdrill
modes.
Hammerdrill Operation
1. Select the desired speed/torque range using
the gear shifter to match the speed and torque
to the planned operation. Set the mode control
collar to the hammer symbol.
2. When drilling, use just enough force on the
hammer to keep it from bouncing excessively.
Too much force will cause slower drilling
speeds, overheating, and a lower drilling rate.
3. Drill straight, keeping the bit at a right angle to
the work. Do not exert side pressure on the bit
when drilling as this will cause clogging of the
bit flutes and a slower drilling speed.
4. When drilling deep holes, if the hammer speed
starts to drop off, pull the bit partially out of
the hole with the tool still running to help clear
debris from the hole.
5. For masonry, use carbide-tipped masonry
bits. A smooth, even flow of dust indicates the
proper drilling rate.
MAINTENANCE
Your D WALT power tool has been designed to
E
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
EN GL IS H
43