Devon 5401-Li-20RH, Руководство пользователя

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page 20 Manual_Revised_V1.1
11. Selecting the required function
WARNING: Do not attempt to change
the position of the selectors when the motor is
running. Doing this will cause serious damage to
the tool and possible injury to the operator.
It is possible to use the hammer drill in two
different modes.
To select the required mode of operation, turn the
selector to the positions indicated.
12. Screw driving
1) Install the correct driver bit.
2) Ensure that the drill/ hammer selection knob is
set to drill mode.
3) Use the correct speed for the job and apply
minimal pressure to the trigger initially.
4) Only increase the speed when full control can
be maintained.
5) Keep sufficient pressures on the drill to
prevent the bit turning out of the screw head.
The screw head can easily become damaged
making it difficult to drive it home or even
remove it.
13. Hole drilling
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.
14. Drilling wood
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 work piece to prevent ragged or
splintered edges on the back of the hole.
15. Drilling metals
For maximum performance, use HSS drill bits for
metal drilling.
1) Set the tool to the drill mode.
2) Mark off the centre of the hole using a centre
punch.
3) Use a suitable lubricant for the material you
are working on.
4) Begin drilling at a very low speed to prevent
the bit from slipping off the starting point.
5) Always clamp sheet metal.
6) Support thin metal with a block of wood to
avoid distorting it.
16. Drilling masonry
For maximum performance, use high quality
carbide-tipped masonry drill bits when drilling
holes in brick, tile, concrete etc.
Use the drilling setting initially then revert to the
hammer action once the holes are established.
When drilling holes in tile, practice on a scrap
piece to determine the best speed and pressure.
NOTE: reverse rotation during impact drilling
may damage the tool and drill bit.
APPLICATION
Determine the tool has been shut down, then
put the tool at the top of the screw head. The drill
bit head in rotation from the screw head slide
easily.