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GMC GDD12 Manual Del Usuario página 8

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Torque control
Note: This cordless drill is equipped with a torque control clutch allowing the machine to be
set to the correct torque for the individual application.
The clutch settings are indicated by the symbols on the Torque Selector (3)
Rotate the Torque Selector to select the desired setting: the higher the number displayed
on the torque ring, the higher the torque produced by the tool
Gear selection
Select gear 1 on the Gear Switch (4) for the higher torque. A lower speed gear is
generally more suitable for driving screws and fasteners
Select gear 2 on the Gear Switch for the lower torque. A higher speed gear is for drilling
GB
and must not be used for driving screws and fasteners
Note: ALWAYS read the documentation provided with drill bits and accessories for
the recommended or maximum speed setting and use the most appropriate gear. See
'Specification' for the maximum no load speed of each gear.
Switching on/off
WARNING: ALWAYS wear adequate personal protection equipment when setting up and
operating this machine.
1. To start the drill, squeeze the Trigger Switch (7)
2. The built-in Work Light (9) will illuminate when the Trigger Switch is squeezed
Note: If the Trigger Switch cannot be pressed down, check that the Forward/Reverse Switch
(6) is not set to its middle position, which locks the device (see 'Direction control').
3. The speed of the drill is controlled by the movement of the trigger: the further the
Trigger Switch is pressed down, the faster the drill will run
4. Release the Trigger Switch to stop the machine
Screwdriver use
Note: Always use a universal bit holder when working with screwdriver bits. Do not mount
screwdriver bits directly into the chuck.
Select gear 1 using the Gear Switch (4)
When driving screws NEVER use the machine in drill mode
Always adjust the drill to the appropriate torque setting (see 'Torque control')
Note: If in doubt which torque setting best suits the application, start with a low setting and
increase, should more torque be required (e.g. if the screw is not being driven far enough into
the workpiece).
Drilling wood
Select drilling mode with the Torque Selector (3)
Select the appropriate gear using the Gear Switch (4)
Ensure that drill bits are suitable for wood, and are within the maximum capacity of this
machine (see 'Specification')
WARNING: DO NOT inhale wood dust. Wear adequate breathing protection. Some wood
dusts may be toxic.
Drilling metal
Select drilling mode with the Torque Selector (3)
Select the appropriate gear using the Gear Switch (4)
Ensure that drill bits are suitable for the grade of metal being drilled, and are within the
maximum capacity of the machine (see 'Specification')
To ensure accuracy, mark the intended hole position using a hammer and centre punch
WARNING: The drill bit and the workpiece will become very hot when drilling metal. DO NOT
touch the bit and never allow it to come into contact with combustible materials when hot.
Always use a suitable lubricant or cutting fluid, and drill at appropriate speeds.
ONLY apply moderate pressure to the drill bit, ensuring efficient cutting and prolonged drill
bit life
Use a countersink bit to remove sharp burrs from the hole, preventing cuts and other
kinds of injury
WARNING: If the power tool gets excessively hot in use, stop using the tool immediately and
allow to cool before continuing work. The cooling period can be reduced by operating the
drill at maximum speed with no load. Always make sure the Motor Vents (5) are not blocked
and do not allow dust to enter the body of the tool through the Motor Vents; dust, especially
metallic dust, may damage or destroy the tool.
Accessories
A full range of accessories including various types of drill and screwdriver bits is available
from your GMC stockist. Spare parts can be obtained from toolsparesonline.com.
Maintenance
WARNING: ALWAYS disconnect from the mains power supply, before carrying out
any maintenance/cleaning of the charger. Remove the battery before carrying out any
maintenance/cleaning of the drill.
Note: Both the drill and the charger contain no user-serviceable parts. If the device does not
perform as outlined in this manual, return it to an authorised GMC service centre for repair.
General inspection
Regularly check that all the fixing screws are tight
Inspect the supply cord of the tool, prior to each use, for damage or wear. Repairs should
be carried out by an authorised GMC service centre. This advice also applies to extension
cords used with this tool
Cleaning
Keep your tool clean at all times. Dirt and dust will cause internal parts to wear quickly,
and shorten the machine's service life. Clean the body of your machine with a soft brush,
or dry cloth. If available, use clean, dry, compressed air to blow through the ventilation
holes
Clean the tool casing with a soft damp cloth using a mild detergent. Do not use alcohol,
petrol or strong cleaning agents
Never use caustic agents to clean plastic parts
Lubrication
Slightly lubricate all moving parts at regular intervals with a suitable spray lubricant
Storage
Store this tool carefully in a secure, dry place out of the reach of children
Disposal
Always adhere to national regulations when disposing of power tools that are no longer
functional and are not viable for repair.
• Do not dispose of power tools, or other waste electrical and electronic equipment (WEEE),
with household waste
• Contact your local waste disposal authority for information on the correct way to dispose of
power tools
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