PT-1201 User’s Manual
www.prokits.com.tw
8
forward and reverse switch in the central position before you put the machine
down, to avoid unintentional starting.
Torque adjustment
You can control the maximum torque applied to the drill bit with the torque
control knob.
Attention!
The torque control knob should only be operated when the
machine is not running; otherwise the machine may be damaged.
To set the drill to the lowest available torque setting, twist the torque control knob
until the small arrow on the drill-housing points to the “1” stamped on the torque
control knob. In this position the torque clutch will slip with light drilling resistance.
The higher the number the arrow points to on the torque control knob, the larger
the maximum torque that can be applied before the torque clutch will slip.
To set the machine to maximum available torque twist the torque control knob
until the arrow points to the drill symbol. In this position there is no slip in the
torque clutch.
Select a lower torque for insertion/removal of screws to avoid damage to the
work-piece (in particular wooden work-pieces) or to the screw. For drilling select
a higher torque setting. Do a test first on an item which is not your final
work-piece and adjust the desired torque accordingly before you start the actual
work.
Operation for working
Only use tool bits which can be securely fastened in the chuck and for which the drill has
been designed.
1. Drilling
Check whether the drill bit is correctly inserted and tightly fastened before you
start the machine. Use properly sharpened drill bits. Use screwdriver bits that
are not overly worn. At the start of each drilling operation select a lower speed.
For large holes drill with a smaller drill bit first and then enlarge the hole using a
larger drill bit.
2. Drilling in Wood
For drilling in wood use a wood drill-bit. Protect or fasten the work-piece in a
suitable holder. Mark the positions of the holes to be drilled with a sharp tool or a
nail. Do not apply excessive pressure against the work-piece with the machine.
3. Drilling in Metal
For drilling in metal use a steel drill-bit. Always provide sufficient cooling with
suitable non-inflammable coolants. Protect or fasten the work-piece with a
PT-1201 User’s Manual
www.prokits.com.tw
9
suitable holder. The work-piece should lie flat on the work bench. Mark the
positions of the holes to be drilled with a centre-punch. Do not apply excessive
pressure against the work-piece with the machine. Allow the drill to operate at its
normal operating speed.
Important!
At the start of drilling select a lower speed to avoid the bit
slipping away from the desired holes location. If the drill-hole is deep, the drill-bit
may become jammed in the hole. In this event a high torque could damage the
drill bit or the drill. If the bit becomes jammed, hold the machine firmly and
immediately release the On/Off trigger. Switch to anticlockwise rotation, and use
a low rotation speed to remove the jammed drill bit more easily.
4. Drilling in Plastic
For drilling in plastic use a steel drill and follow the same instructions as for
drilling in wood.
5. Drilling in Stone, Brick, Masonry or similar
For drilling in walls, stone, masonry etc. use a masonry-bit. Do not put too much
pressure on the machine. Follow the same instructions as for drilling in metal.
6. Using the Drill as a Screw-driver
Before using the machine check whether the screw-bit is inserted correctly.
Avoid over-tightening screws, otherwise the screw head may be damaged or
stripping of the threads may occur.
7. Screw Insertion
Set the direction of rotation of the drill to the clockwise direction. Insert the
screw-bit into the slot in the head of the screw. Hold the screw bit perpendicular
to the head of the screw, otherwise the screw or the screw head may be
damaged. Press the screw bit against the screw with a constant pressure while
driving in the screw.
When the screw is completely screwed in, hold the machine firmly and release
the On/Off trigger, otherwise the screw or the screw head may be damaged. If
the On/Off trigger is not released immediately a high torque could also damage
the drill bit or the drill.
8. Screw Removal
Set the direction of rotation of the drill to the anticlockwise direction. Insert the
screw-bit into the slot in the head of the screw. Hold the screw-bit perpendicular
to the head of the screw, otherwise the screw or the screw head may be
damaged. Press the screw bit against the screw with a constant pressure while
removing the screw.