Switching On And Off; Hints For Optimum Use; Maintenance; Charging The Battery - Black & Decker GC1200 Instruction Manual

16 • ENGLISH
clockwise using a screwdriver.
f Tighten an Allen key (14) into the chuck and strike it
with a hammer as shown.
f Remove the Allen key.
f Remove the chuck by turning it counterclockwise.
f To refit the chuck, screw it onto the spindle and secure
it with the chuck retaining screw.
USE
Warning! Let the tool work at its own pace. Do not
overload.

Charging the battery

The battery needs to be charged before first use and
whenever it fails to produce sufficient power on jobs that
were easily done before. When charging the battery for
the first time, or after prolonged storage, it will only accept
an 80% charge. After several charge and discharge
cycles, the battery will attain full capacity. The battery may
become warm while charging; this is normal and does not
indicate a problem.
Warning! Do not charge the battery at ambient
temperatures below 4°C or above 40°C. Recommended
charging temperature: approx. 24°C.
Charger with charger plug (Fig. D)
f To charge the battery, make sure that it is fitted on
the tool.
f Insert the charger plug (9) into the connector (8).
f Plug in the charger (7).
f Switch on at the mains.
After normal use, a charging time of 3 hours will provide
sufficient power for most applications. However, further
charging for up to 6 hours could significantly increase the
use time, depending on the battery and charging conditions.
f Disconnect the tool from the charger.
Warning! Do not use the tool while it is connected to
the charger.

Selecting the direction of rotation

For drilling and for tightening screws, use forward
(clockwise) rotation. For loosening screws or removing a
jammed drill bit, use reverse (counterclockwise) rotation.
f To select forward rotation, push the forward/reverse
slider (2) to the left.
f To select reverse rotation, push the forward/reverse
slider to the right.
f To lock the tool, set the forward/reverse slider into the
centre position.
Selecting the operating mode or torque (Fig. G)
This tool is fitted with a collar to select the operating mode
and to set the torque for tightening screws. Large screws
and hard workpiece materials require a higher torque
setting than small screws and soft workpiece materials.
The collar has a wide range of settings to suit your
application.
f For drilling in wood, metal and plastics, set the collar
(3) to the drilling position by aligning the symbol with
the marking (15).
f For screwdriving, set the collar to the desired setting.
If you do not yet know the appropriate setting, proceed
as follows:
f Set the collar (3) to the lowest torque setting.
f Tighten the first screw.
f If the clutch ratchets before the desired result
f is achieved, increase the collar setting and
continue tightening the screw. Repeat until you
reach the correct setting. Use this setting for the
remaining screws.

SWITCHING ON AND OFF

Variable speed switch
f To switch the tool on, press the variable speed switch
(1). The tool speed depends on how far you press the
switch.
f To switch the tool off, release the variable speed
switch.

HINTS FOR OPTIMUM USE

Drilling
f Always apply a light pressure in a straight line with the
drill bit.
f Just before the drill tip breaks through the other side
of the workpiece, decrease pressure on the tool.
f Use a block of wood to back up workpieces that may
splinter.
f Use spade bits when drilling large diameter holes in
wood.
f Use HSS drill bits when drilling in metal.
f Use masonry bits when drilling in soft masonry.
f Use a lubricant when drilling metals other than cast
iron and brass.
f Make an indentation using a centre punch at the
centre of the hole to be drilled in order to improve
accuracy.
Screwdriving
f Always use the correct type and size of screwdriver
bit.
f If screws are difficult to tighten, try applying a small
amount of washing liquid or soap as a lubricant.
f Always hold the tool and screwdriver bit in a straight
line with the screw.

MAINTENANCE

Keep guards, air vents and the motor housing as clear as
possible of dust and dirt. Wipe with a clean cloth and blow
through with a low-pressure air supply. Excessive build-up