Switching On And Off - GMC GSDS800 Mode D'emploi

3. Remove a bit from the chuck by pulling the Chuck Protective Cover back, and holding. The bit can then be
removed from the drill
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)
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
mode (for wood, metal etc)
• To select hammer drilling mode , rotate the Mode Selector (3) to the 'B' position
• To select rotary drilling mode , rotate the Mode Selector to the 'A' position
• 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
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 , turn the Mode Selector (3) to the 'D' position
2. To select free-rotation mode , turn the Mode Selector to the 'C' position
• 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
(for masonry work) or conventional rotary drill
or free rotation hammer mode . Hammer mode

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
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)
CAUTION: The drill is not designed to be permanently switched on and there is no 'lock-on feature'. Do not
attempt to improvise such a feature.
Drilling concrete
1. Using Hammer Drill Mode (B) and rotation mode
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 operation.
• Using Hammer drill Mode (D) or Free Rotation Hammer Mode
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 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.
9
, apply pressure to the rear of the drill in line
, apply pressure to the rear of the
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