DeWalt DCD790 Instruction Manual page 45

Installing and Removing the Battery Pack
(Fig. 6)
NOTE: For best results, make sure your battery pack is fully charged.
To install the battery pack (K) into
the tool handle, align the battery
pack with the rails inside the tool's
handle and slide it into the handle
until the battery pack is firmly
seated in the tool and ensure that
it does not disengage.
To remove the battery pack from
the tool, press the release button
(J) and firmly pull the battery pack out of the tool handle. Insert it into
the charger as described in the charger section of this manual.
FUEL GAUGE BATTERY PACKS (FIG. 7)
Some D WALT battery packs include a
E
fuel gauge which consists of three green
LED lights that indicate the level of charge
remaining in the battery pack.
To actuate the fuel gauge, press and hold
the fuel gauge button (L). A combination
of the three green LED lights will illuminate
designating the level of charge left. When
the level of charge in the battery is below
the usable limit, the fuel gauge will not
illuminate and the battery will need to be
recharged.
NOTE: The fuel gauge is only an indication of the charge left on the
battery pack. It does not indicate tool functionality and is subject to
FIG. 6
J
K
FIG. 7
L
variation based on product components, temperature and end-user
application.
For more information regarding fuel gauge battery packs, please
contact your local service center.
Drilling (Fig. 8)
NOTICE: If drilling thin material, use a wood "back-up" block to
prevent damage to the material.
1. Select the desired speed/torque range using the gear shifter to
match the speed and torque to the planned operation. Turn the
collar (C) to the drill symbol.
2. Use sharp drill bits only. For MASONRY, such as brick, cement,
cinder block, etc., use carbide-tipped bits rated for percussion
drilling.
3. 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.
4. 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.
WARNING: 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.
5. 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 DEPRESS TRIGGER ON AND OFF IN AN ATTEMPT
TO START A STALLED DRILL — THIS CAN DAMAGE THE
DRILL.
6. To minimize stalling or breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part
of the hole.
7 . Keep the motor running when pulling the bit back out of a drilled
hole. This will help prevent jamming.
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