Black and Decker KR2000K Manual De Instrucciones página 4

ENGLISH
Features
This tool includes some or all of the following features (fig. A)
1. Variable speed switch
2. Lock-on button
3. Bit holder
4. Locking ring
5. Forward/reverse switch
6. Direction of rotation indicator
7. Torque adjustment collar
Assembly
Warning! Make sure that the tool is switched off and unplugged.
Fitting and removing a drill bit or screwdriver bit (fig. B)
Fitting
This tool uses screwdriver bits and drill bits with a 1/4" (6.35 mm)
hexagonal shank.
Insert the bit shaft into the bit holder (3) and press it
x
down until it clicks in place.
Removing
Warning! The drill bit may be hot just after drilling.
Pull the locking ring (4) backwards and take the bit out of
x
the bit holder.
Use
Warning! Before drilling into walls, floors or ceilings,
check for the location of wiring and pipes.
Selecting the direction of rotation (fig. C)
For drilling and for tightening screws, move the forward/
x
reverse switch (5) to the right. The direction indicator (6)
shows a forward pointed arrow.
For loosening screws or removing a jammed bit, move the
x
forward/reverse switch to the left. The direction indicator
shows a backward pointed arrow.
Warning! Never change the direction of rotation while the
motor is running.
Selecting the torque or drill position (fig. D)
This tool is fitted with a collar to set the torque for tightening
screws.
For drilling, turn the collar (7) to the left until the symbol
x
aligns with the marking (8).
For screwdriving, set the collar to the desired setting. If you
x
do not yet know the desired setting, proceed as follows:
Turn the collar (7) completely to the right (lowest torque).
x
Tighten the first screw.
x
If the clutch ratchets before the desired result is
x
achieved, increase the torque by turning the collar to
the left. Continue tightening the screw. Repeat until
you reach the correct setting. Use this setting for the
remaining screws.
4
Switching on and off (fig. A)
To switch the tool on, press the variable speed switch (1).
x
The tool speed depends on how far you press the switch.
As a general rule, use low speeds for large diameter drill
bits and high speeds for smaller diameter drill bits.
For continuous operation, press the lock-on button (2) and
x
release the variable speed switch. This option is available
only at full speed.
To switch the tool off, release the variable speed switch.
x
To switch the tool off when in continuous operation, press
the variable speed switch once more and release it.
Hints for optimum use
Drilling
Always apply a light pressure in a straight line with the
x
drill bit.
Just before the drill tip breaks through the other side of
x
the workpiece, decrease pressure on the tool.
Use a block of wood to back up workpieces that may splinter.
x
Use spade bits when drilling large diameter holes in wood.
x
Use masonry drill bits when drilling into light masonry.
x
Use HSS drill bits when drilling in metal.
x
Use a lubricant when drilling metals other than cast iron
x
and brass.
Make an indentation with a centre punch at the centre of
x
the hole to be drilled in order to improve accuracy.
Screwdriving
Always use the correct type and size of screwdriver bit.
x
If screws are difficult to tighten, try applying a small amount
x
of washing liquid or soap to the thread as a lubricant.
Always hold the tool and screwdriver bit in a straight line
x
with the screw.
When screwing in wood, it is recommended to drill a pilot
x
hole with a depth equal to the length of the screw.
A pilot hole guides the screw and prevents splintering or
x
distortion of the wood. For the optimum size of the pilot
hole, refer to the table below.
When screwing in hardwood, also drill a clearance hole with
x
a depth equal to half the length of the screw. For the
optimum size of the clearance hole, refer to the table below.
Screw size
No. 6 (3.5 mm)
No. 8 (4 mm)
No. 10 (5 mm)
Screw size
No. 6 (3.5 mm)
No. 8 (4 mm)
No. 10 (5 mm)
Pilot hole ø (softwood)
2 mm
3.2 mm
3.5 mm
Pilot hole ø (hardwood)
2.5 mm
3.5 mm
4.0 mm