User Manual

PT-1441 User’s Manual
www.prokits.com.tw 6
and then holding the lower ring, turn the locking ring in a clockwise direction to firmly tighten it.
To remove the tool hold the lower ring of the chuck and turn the locking ring anticlockwise.
Open the chuck until you can remove the tool
Operating Trigger
Use the operating trigger to start the machine and keep holding it for continuous operation.
The rotation speed can be varied by depressing the operating trigger. The more the trigger is depressed, the
faster rotation speed.
To switch the machine off, release the operating trigger
Forward and reverse switch
Important! The machine has to come to a complete stop before the reverse rotation lever can be used;
otherwise the machine may be damaged.
Use the forward and reverse switch to switch between clockwise (normal) and anticlockwise rotation or
vice-versa. With the forward and reverse switch in the central position the operating trigger is locked and
cannot be depressed. Put the 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 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