Hart HPDD50 Manual Del Operador página 6

OPERATION
VARIABLE SPEED SWITCH TRIGGER
See Figure 2, page 9.
The variable speed switch trigger delivers higher speed with
increased trigger pressure and lower speed with decreased
trigger pressure.
To turn the drill ON, depress the switch trigger. To turn it
OFF, release the switch trigger and allow the chuck to come
to a complete stop.
NOTE: A whistling or ringing noise coming from the switch
during use is a normal part of the switch function.
NOTE: Running at low speeds under constant usage may
cause the drill to become overheated. If this occurs, cool
the drill by running it without a load and at full speed.
DIRECTION OF ROTATION SELECTOR
(FORWARD/REVERSE/CENTER LOCK)
See Figure 2, page 9.
Set the direction of rotation selector in the OFF (center
lock) position to lock the switch trigger and help prevent
accidental starting when not in use.
Position the direction of rotation selector to the left of the
switch trigger for forward drilling. Position the selector to
the right of the switch trigger to reverse the direction.
NOTE: The drill will not run unless the direction of rotation
selector is pushed fully to the left or right.
NOTICE:
To prevent gear damage, always allow the chuck to
come to a complete stop before changing the direction
of rotation.
WARNING:
Battery tools are always in operating condition. Lock
the switch when not in use or carrying at your side,
when installing or removing the battery pack, and when
installing or removing bits.
INSTALLING/REMOVING BITS
See Figures 3 - 4, page 9.
The arrows on the keyless chuck indicate which direction
to rotate the chuck sleeve to tighten or release the drill bit.
Do not use a wrench to tighten or loosen the chuck jaws.
To install bits, lock the switch trigger.

Open or close the chuck jaws until the opening is slightly

larger than the bit size you intend to use.
Raise the front of the drill slightly and insert the drill bit.

WARNING:
Make sure to insert the drill bit straight into the chuck
jaws. Do not insert the drill bit into the chuck jaws at
an angle, then tighten. This could cause the drill bit to
be thrown from the drill, resulting in possible serious
personal injury or damage to the chuck.
Grasp and hold the collar of the chuck with one hand.

With your other hand, rotate the chuck sleeve to close
and tighten the chuck jaws.
WARNING:
Do not hold the chuck sleeve with one hand and use the
power of the drill to tighten the chuck jaws on the drill
bit. The chuck sleeve could slip in your hand, or your
hand could slip and come in contact with the rotating
drill bit. This could cause an accident resulting in serious
personal injury.
To remove bits, lock the switch trigger and open the

chuck jaws.
The bit provided with the drill can be placed in the storage

area, located on the base of the drill.
ADJUSTING TORQUE
See Figure 5, page 9.
Rotate the adjustment ring to the proper torque setting for
the type of material and size of screw you are using.
• 1 - 4 For driving small screws
• 5 - 8 For driving screws into soft material
• 9 - 12 For driving screws into soft and hard
materials
• 13 - 16 For driving screws into hard wood
• 17 - 20 For driving large screws
• 21 - For heavy drilling
DRILLING/DRIVING SCREWS
See Figure 6, page 9.
Check the direction of rotation selector for the correct

setting (forward or reverse).
Secure the workpiece in a vise or with clamps to keep it

from turning as the bit rotates.
Hold the drill firmly and place the bit at the point to be

drilled, or where the screw is to be driven.
WARNING:
Do not drive a screw where there is likely to be hidden
wiring behind the surface. Contact with a "live" wire
will make exposed metal parts of the tool "live" and
possibly shock the operator. If you must drive a screw
where hidden wire may be present, always hold tool by
insulated gripping surfaces (handle) when performing the
operation to prevent a shock to the operator.
6 – English