Silverline 500W Hammer Drill - Manual (Page 7)

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• The drill can be used in either hammer drill mode (for masonry work),
or conventional rotary drill mode (for wood, metal etc).
• To select hammer drilling mode, slide the hammer selection switch (2)
to the right.
• To select rotary drilling mode, slide the hammer selection switch to
the left.
• Do not attempt to move the hammer selection switch whilst the drill
is running.
Drilling concrete
• Using hammer drill mode, apply pressure to the rear of the drill, in
line with the drill bit.
• For efficient drilling, it is advisable to use TCT (tungsten carbide) drill bits.
Ensure that drill bit size is within the maximum capacity of the drill (see
specifications).
• 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.
Drilling wood
• Use rotary drill mode only.
• Ensure that drill bits are suitable for wood, and are within the maximum
capacity of this drill (see specifications).
Drilling metal
• To ensure accuracy, mark the intended hole position using a hammer
and centre punch.
• Use rotary drill mode only.
• Ensure that drill bits are suitable for the grade of metal being drilled, and
are within the maximum capacity of the drill (see specifications).
• To ensure efficient cutting, and prolong drill bit life, use a suitable
lubricant or cutting fluid.
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 suddenly “kick”, to prevent any
possibility of injury always hold the drill securely, use the side handle, and
use sharp drill bits.
Always ensure that material is secure. If appropriate use a vice or clamp
to hold the work, always keep two hands on the drill.
Maintenance and Disposal
Cleaning
• Disconnect the machine from the mains supply before cleaning.
• Keep your machine clean. Always clean dust and particles away,
and never
allow ventilation holes to become blocked. Use a soft brush, or dry cloth
to clean the machine, if available blow through the ventilation holes with
clean, dry, compressed air.
Replacement brushes
• Over time, the carbon brushes in the motor will wear away. This wear
process will be accelerated if the machine is used in dusty environments,
or if the machine is overloaded.
• If the brushes have become excessively worn; motor performance may
decrease, the machine may fail to start, or excessive sparking may be
observed.
• If you suspect that the brushes may be worn, have them replaced at an
authorised service centre.
Disposal
• 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 proper
way to dispose of power tools.
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