Flex FHE 1-16 18.0-EC Original Operating Instructions page 17

FHE 1-16 18.0-EC
Switching on the power tool
(see figure K)
■ To switch the tool on:
Press and hold down the trigger switch (5).
The power tool trigger switch enables the
speed or impact rate to be increased slowly
to the maximum value.
■ To switch the tool off:
Release the trigger switch (5).
The variable-speed feature is particularly
useful. It also enables you to select the best
speed for a particular application.
NOTE
It is recommended to use the variable-
speed feature for a short time only. Do not
continuously operate the tool at different
speeds. It may damage the switch.
WARNING!
Please start the tool for 2-3 minutes first
before use, while the temperature is below
zero and there is no impact phenomenon
after you turn on the tool.
Hole drilling (see figure L)
When attempting to drill a large diameter
hole, it is sometimes best to start with a
smaller drill bit then work up to the required
size. This prevents overloading the drill.
If the drill bit snags, switch off immediately to
prevent permanent damage to the drill. Try
running the drill in reverse to remove the bit.
Keep the drill in line with the hole. Ideally,
the drill bit should enter at right angles to the
work. If the angle is changed during drilling,
this could cause the bit to snap off blocking
the hole and perhaps causing injury.
Reduce pressure as the drill is about to break
through the item being drilled.
Don't force the tool, let it work at its own
pace.
Keep the bit sharp.
Drilling wood (see figure M)
For maximum performance when drilling
larger holes, use auger bits or spade bits for
wood drilling.
■ Set the tool to the drill mode.
■ Begin drilling at a very low speed to prevent
the bit from slipping off the starting point.
Increase the speed as it bites into the wood.
■ When drilling through holes, place a block
of wood behind the workpiece to prevent
ragged or splintered edges on the back of
the hole.
Drilling metals
For maximum performance, use HSS drill bits
for metal drilling.
■ When drilling metals, use light oil on the
drill bit to keep it from overheating. The oil
will prolong the life of the bit and increase
the drilling efficiency.
■ Set the tool to the drill mode.
■ Begin drilling at a very low speed to prevent
the bit from slipping off the starting point.
■ Maintain a speed and a pressure that allow
cutting without overheating the bit.
Applying too much pressure will:
– Overheat the tool.
– Wear the bearings.
– Bend or burn bits.
– Produce off-center or irregularly shaped
holes.
Drilling masonry (see figure N)
For maximum performance, use high quality
carbide-tipped masonry drill bits when
drilling holes in brick, tile, concrete etc.
■ Maintain a speed and a pressure that allow
cutting without overheating the bit or tool.
Applying too much pressure will:
– Overheat the tool.
– Wear the bearings.
– Bend or burn bits.
– Produce off-center or irregular-shaped holes.
■ Apply light pressure and medium speed
for best results in brick. Apply additional
pressure for hard materials such as
concrete.
■ When drilling holes in tile, practice on a
scrap piece to determine the best speed
and pressure. To prevent the drill bit from
skidding/ sliding, first apply two pieces of
masking tape to create an "X" shape over
the intended drilling spot.
■ Begin drilling at a very low speed to prevent
the bit from slipping off the starting point.
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