DeWalt DCD780, Original Instructions Manual

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35
EnGLIsh
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 battery pack
before making any adjustments or removing/
installing attachments or accessories.
An accidental
start-up can cause injury.
CAUTION:
Drill may stall if overloaded causing a sudden
twist. Always expect the stall. Grip the drill firmly to control
the twisting action and avoid injury.
6. IF DRILL sTaLLs , it is usually because it is being
overloaded or improperly used.
RELEasE TRIGGER
IMMEDIaTELY, remove drill bit from work, and determine
cause of stalling. DO nOT cLIck TRIGGER On anD OFF
In an aTTEMPT TO sTaRT a sTaLLED DRILL — ThIs
can DaMaGE ThE DRILL.
7. To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the last
fractional part of the hole.
8. Keep the motor running when pulling the bit back out of a
drilled hole. This will help prevent jamming.
9. With variable speed drills there is no need to center punch
the point to be drilled. Use a slow speed to start the hole
and accelerate by squeezing the trigger harder when the
hole is deep enough to drill without the bit skipping out.
Hammerdrill Operation (Fig. E)
1. Turn the collar 3 to the hammerdrill symbol.
2. Select the high speed setting by sliding the selector back
(away from the chuck).
IMPORTanT:
Use carbide-tipped or masonry bits only.
3. Drill with just enough force on the hammer to keep it from
bouncing excessively or “rising” off the bit. Too much force
will cause slower drilling speeds, overheating and lower
drilling rate.
4. Drill straight, keeping the bit at a right angle to the work. Do
not exert side pressure on the bit when drillling as this will
cause clogging of the bit flutes and a slower drilling speed.
5. When drilling deep holes, if the hammer speed starts to
drop off, pull the bit partially out of the hole with tool stil
running to help clear debris from the hole.
nOTE:
A smooth, even flow of dust from the hole indicates
proper drilling rate.
Screwdriver Operation (Fig. F)
1. Select the desired speed/torque range using the dual
range gear selector to match the speed and torque of the
planned operation.
2. Turn the torque adjustment collar 3 to the desired position.
Lower numbers indicate lower torque settings; higher
numbers indicate higher torque settings.
3. Insert the desired fastener accessory into the chuck as you
would any drill bit.
4. Make some practice runs in scrap or on unseen areas to
determine the proper position of the clutch collar.
5. Always start with lower torque settings, then advance to
higher torque settings to avoid damage to the workpiece
or fastener.
Drill Operation (Fig. D)
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: TO REDUCE THE RISK OF PERSONAL
INJURY, ALWAYS
ensure workpiece is anchored or
clamped firmly. If drilling thin material, use a wood “back-
up” block to prevent damage to the material.
1. Turn the collar 3 to the drill symbol.
2. Select the desired speed/torque range using the gear shifter
to match the speed and torque to the planned operation.
3. 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.
4. Always apply pressure in a straight line with the bit. Use
enough pressure to keep drill biting, but do not push hard
enough to stall the motor or deflect the bit.
5. Hold tool firmly with both hands to control the twisting
action of the drill. If model is not equipped with side handle,
grip drill with one hand on the handle and one hand on the
battery pack.
Proper Hand Position (Fig. C)
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 top of the
drill
15 as shown, with the other hand on the main handle 16 .
IMPORTanT:
When attaching or replacing the belt hook or bit
clip, use only the screw 8 that is provided. Be sure to securely
tighten the screw.
The belt hook
7 or bit clip 10 can be be attached to either side
of the tool using only the screw 8 provided, to accommodate
left- or right- handed users. If the hook or bit clip is not desired
at all, it can be removed from the tool.
To move belt hook or bit clip, remove the screw that holds it in
place then reassemble on the opposite side. Be sure to securely
tighten the screw.