Product Familiarisation; Intended Use; Unpacking Your Tool; Before Use - GMC GID850 Manual De Instrucciones

q) If you are interrupted when operating the drill, complete the process and switch off before looking up.
r) Where possible, use clamps or a vice to hold your work.
s) ALWAYS disconnect the hammer drill from the electric supply before changing a drill bit.
t) Examine the chuck regularly for signs of wear or damage. Have damaged parts repaired by a qualified
service centre.
u) ALWAYS wait until the drill has come to a complete stop before putting it down.
v) On completion of the work, disconnect the tool from the power source and remove bit from the
machine.
w) Periodically check all nuts, bolts and other fixings and tighten where necessary.

Product Familiarisation

1. Auxiliary Handle
2. Depth Stop
3. Chuck
4. Chuck Collar
5. Auxiliary Handle Collar
6. Mode Selection Switch
7. Forward/Reverse Selector
8. Trigger Lock Button
9. Power Cord
10. On/Off Trigger
11. Speed Control Dial
12. Gear Selector

Intended Use

Portable light duty corded impact drill suitable for drilling a wide range of materials, including masonry when using
the hammer mode function. Also compatible but not optimally configured for driving screws and fasteners.

Unpacking Your Tool

• Carefully unpack and inspect your new tool. Familiarise yourself with all its features and functions
• Ensure that all parts of the tool are present and in good condition. If any parts are missing or damaged, have
such parts replaced before attempting to use this tool

Before Use

WARNING: Ensure the tool is disconnected from the power supply before attaching or changing any
accessories, or making any adjustments.
Auxiliary handle
Note: The Auxiliary Handle (1) should always be used when drilling. Always hold the drill firmly with both hands.
1. Loosen the neck of the Auxiliary Handle by twisting the grip anti-clockwise
2. Fit the neck of the Auxiliary Handle over the Chuck (3) and Chuck Collar (4) onto the Auxiliary Handle Collar (5)
3. Tighten the Auxiliary Handle into position by twisting the grip clockwise until secure
Depth stop
1. Loosen the neck of the Auxiliary Handle (1) by twisting the grip anti-clockwise
2. The Depth Stop (2) will now be free to move. The offset end of the Depth Stop, should be positioned nearest
the Chuck (3)
3. Use the graduation markings on the Depth Stop, to accurately control drilling depth
4. To tighten the Depth Stop into position, twist the Auxiliary Handle clockwise until secure
Chuck operation
WARNING: Do not operate the drill to open or close the Chuck. Doing this will cause permanent damage to
the tool.
1. The keyless Chuck (3) can be opened by holding the rear of the Chuck Collar (4), and rotating the front of
the Chuck Collar anti-clockwise
2. Place the drill bit or accessory centrally in the chuck jaws. It is only necessary to open the jaws enough so
the bit slides in smoothly and remains in the centre before tightening
3. Tighten the Keyless Chuck by holding the rear of the Chuck Collar and rotating the front chuck ring
clockwise
Note: Do not use additional tools to tighten the chuck.
Operation
WARNING: ALWAYS wear eye protection, adequate respiratory and hearing protection, as well as suitable
gloves, when working with this tool.
On/Off Trigger
• To activate the drill, squeeze the On/Off Trigger (10)
• To stop the drill, release the On/Off Trigger
Trigger lock button
• The drill is equipped with a Trigger Lock Button (8). This allows the On/Off Trigger (10) to be locked into the
'on' position for tasks where holding the trigger continuously would not be possible. For example, when fitted
to a drill press stand
• Depress the Trigger Lock Button after squeezing the On/Off Trigger to use the trigger lock function. The On/
Off Trigger can then be released and the drill will continue to run
• Squeeze then release the On/Off Trigger to stop the drill
Speed adjustment
• Rotate the Speed Control Dial (11) to set the maximum speed obtainable with the On/Off Trigger (10)
Drill Direction
WARNING: Do not attempt to move the Forward/Reverse Selector (7) whilst the drill is running.
WARNING: Do not attempt to run the drill with the Forward/Reverse Selector in the mid position.
• The direction of the drill can be changed using the Forward/Reverse Selector
• Push the Forward/Reverse Selector to the right to run the drill in a clockwise direction
• Push the Forward/Reverse Selector to the left to run the drill in an anti-clockwise direction,
Drill mode selection
WARNING: Do not attempt to move the Mode Selection Switch (6) whilst the drill is running.
• The drill can be used in either 'hammer drill mode' (for masonry work), or 'conventional rotary drill mode' (for
wood, metal etc)
• Slide the Mode Selection Switch to the left to select 'hammer drill mode'
• Slide the Mode Selection Switch to the right to select 'conventional rotary drill mode'
Drilling masonry and concrete
WARNING: The drill bit, especially the tip, will become very hot when drilling masonry and concrete. DO NOT
touch the bit and never allow it to come into contact with combustible materials.
WARNING: DO NOT inhale masonry dust. Wear adequate breathing protection. Dust from masonry, concrete
and similar is harmful and may be toxic.
• 'Hammer drill mode' should be used for drilling into masonry and concrete
• Apply moderate pressure to the rear of the drill, in line with the drill bit
• Use masonry drill bits only. Ensure the bit size is within the maximum capacity of the machine, see
'Specification'
• Do not apply too much pressure to the hammer drill. If debris blocks the drill hole, run the drill slowly and
remove the bit from the hole. Repeat until the hole is cleared
7
GB