GMC GSDS800 Mode D'emploi page 8

Note: The Dust Guard (12) should be fitted to the drill or chisel bit to prevent debris and dust
entering the chuck. This is especially important when the drill is used at a raised angle when
working on walls or ceilings. For larger drill bits it may need to be fitted before the bit is fitted in
the chuck
Fitting the chuck adapter
NOTE: Due to the SDS Plus chuck mounting, the Chuck Adaptor (15) will have a small amount
of forward and backward movement in use. It should not affect normal operation for most drilling
but be aware that when you use the power drill there may be a small amount of travel after the
drill bit contacts the surface before the drill is effective and starts drilling. Also when removing
the drill bit from the surface there will be a small amount of travel of the drill body before the
drill bit starts to be removed.
1. Insert the Chuck Adaptor (15) into the SDS Plus Chuck (11)
GB
2. Open the chuck of the Chuck Adaptor with the supplied chuck key and insert a
conventional drill bit for either wood or metal into the chuck and tighten the chuck.
See specification for maximum drilling capacity diameter in wood and metal
Operation
Drill mode selection
• The drill can be used in either hammer drill mode
rotary drill mode (for wood, metal etc)
• To select hammer drilling mode
• To select rotary drilling mode
• Do not attempt to move the Mode Selector whilst the drill is running
• Do not attempt to operate the drill with the Mode Selector lever in-between each setting
Chisel mode selection
Note: The drill can be used in either hammer mode
Hammer mode keeps the orientation of the chisel in the same direction in use whereas free
rotation hammer mode allows the chisel to rotate in use. More precise breaking of masonry
material may benefit from hammer mode. General breaking of material may benefit from free
rotation hammer mode as the blade will strike the material at different angles
1. To select non-rotation mode
2. To select free-rotation mode
• Do not attempt to move the Mode Selector whilst the drill is running
• Do not attempt to operate the drill with the Mode Selector lever in-between each setting
Auxiliary handle
• The Auxiliary Handle (10) should always be used when operating the drill
• Always hold the drill firmly using both hands
• The Auxiliary Handle position can be adjusted as required to suit the task to be performed
• Unscrew the Auxiliary Handle grip to release so it can be rotated to the desired position and
then re-tighten
• The Depth Rod (1) position can be altered using the button at the top of the Auxiliary Handle
Direction control
WARNING: NEVER change the direction of rotation while the tool is running. This may
cause permanent damage to the tool.
• The direction of rotation can be set using the Forward/Reverse Switch (5)
• For anti-clockwise rotation, push the switch to the right
• For clockwise rotation, push the switch to the left
Switching on and off
On/off trigger switch
1. To activate the drill, squeeze the On/Off Trigger Switch (7)
2. To stop the drill, release the On/Off Trigger Switch
(for masonry work) or conventional
, rotate the Mode Selector (3) to the 'B' position
, rotate the Mode Selector to the 'A' position
or free rotation hammer mode
, turn the Mode Selector (3) to the 'D' position
, turn the Mode Selector to the 'C' position
Note: The drill can be locked into the "on" position by pressing the Lock-On Button (8) after
depressing the On/Off Trigger Switch. Press the On/Off Trigger Switch again to release the
Lock-On Button and turn off the drill
WARNING: The Lock-On Button should only be used for Drill Mode (A)
Drilling concrete
1. Using Hammer Drill Mode (B)
the drill in line with the drill bit
2. For efficient drilling, it is advisable to use TCT (tungsten carbide tipped) drill bits. Ensure
that the drill bit size is within the maximum capacity of the drill
3. Do not apply too much pressure if debris blocks the drill hole. Run the drill slowly, and
remove the bit from the hole. Repeat until hole is cleared
Chiselling
WARNING: An SDS Plus Drill with a fitted chisel is not a viable alternative to a
professional breaker. Do not use this tool for breaking up patios, paths or other areas of thick
concrete. Always consider the force required to break up different materials. If the chisel fails
to break the material stop using it immediately. The chisel striking a surface it cannot break or
requires repeated strikes at the same point to break will damage the chisel tip and the internal
parts of the SDS drill.
WARNING: Always make sure the Motor Vents (4 & 6) are kept clean of dust and debris in
use to prevent damage to the motor and incorrect
• Using Hammer drill Mode (D)
the rear of the drill in line with the chisel
• Be aware that when chiselling, there is a high risk of chips and other waste being ejected
from the work
CAUTION
• Applying excess pressure does not result in faster or more efficient drilling. If the pressure
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applied to the drill has a noticeable effect on the speed of the drill then reduce the
pressure. Overloading the drill will reduce its service life
• As the drill bit penetrates the material being drilled, it may 'catch' or 'snag'. This can cause
the machine to 'kick' suddenly. To prevent any possibility of injury always hold the drill
securely, use the side handle and use sharp drill bits
Safety Clutch
In the event that a drill bit or core drill becomes locked in the workpiece while operating and
cannot rotate, or is forced to operate at a very low rotational speed, the safety clutch will
dis-engage the drive.
In this event quickly release the On/Off Trigger Switch (7) to help prevent injury, and to reduce
wear on the safety clutch mechanism.
After the safety clutch has disengaged the drive, completely re-check that all equipment
is correctly set up and the drill bit or core drill is not badly worn or damaged. It may be
necessary to work at a slower rate. In some instances you may find the drill is not suitable,
especially if using large core drills.
WARNING: Do not rely on the safety clutch. Always configure your equipment for safe use so
that the safety clutch will not operate.
Drilling wood and metal
CAUTION: A keyed chuck is not for masonry bits and will be damaged if used in hammer
mode. Always use SDS Plus masonry bits fitted directly into the SDS Plus Chuck for
masonry use.
Drilling wood
• Use Drill Mode (A) only
• Ensure that drill bits are suitable for wood, and are within the maximum diameter capacity
of this drill
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and rotation mode , apply pressure to the rear of
operation.
or Free Rotation Hammer Mode , apply pressure to