6
•
Do not use the speed change lever while the tool
is running. The tool may be damaged.
Adjusting the fastening torque
Fig.6
The fastening torque can be adjusted in 18 steps by
turning the adjusting ring so that its graduations are
aligned with the pointer on the tool body. The fastening
torque is minimum when the number 1 is aligned with
the pointer, and maximum when the
marking is
aligned with the pointer.
The clutch will slip at various torque levels when set at
the number 1 to 18. The clutch is designed not to slip at
the
marking.
Before actual operation, drive a trial screw into your
material or a piece of duplicate material to determine
which torque level is required for a particular application.
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out
any work on the tool.
Installing or removing driver bit or drill bit
Fig.7
Turn the sleeve counterclockwise to open the chuck
jaws. Place the bit in the chuck as far as it will go. Turn
the sleeve clockwise to tighten the chuck.
To remove the bit, turn the sleeve counterclockwise.
OPERATION
CAUTION:
•
Always insert the battery cartridge all the way until
it locks in place. If not, it may accidentally fall out
of the tool, causing injury to you or someone
around you.
Hold the tool firmly with one hand on the grip and the
other hand on the bottom of the battery cartridge to
control the twisting action.
Screwdriving operation
Fig.8
CAUTION:
•
Adjust the adjusting ring to the proper torque level
for your work.
Place the point of the driver bit in the screw head and
apply pressure to the tool. Start the tool slowly and then
increase the speed gradually. Release the switch trigger
as soon as the clutch cuts in.
CAUTION:
•
Make sure that the driver bit is inserted straight in
the screw head, or the screw and/or bit may be
damaged.
NOTE:
•
When driving wood screws, predrill pilot holes to
make driving easier and to prevent splitting of the
workpiece. See the chart.
Nominal diameter of wood screw
(mm)
Recommended size of pilot hole
(mm)
3.1
2.0 - 2.2
3.5
2.2 - 2.5
3.8
2.5 - 2.8
4.5
2.9 - 3.2
4.8
3.1 - 3.4
5.1
3.3 - 3.6
5.5
3.7 - 3.9
5.8
4.0 - 4.2
6.1
4.2 - 4.4
006421
Drilling operation
First, turn the adjusting ring so that the pointer points to
the
marking. Then proceed as follows.
Drilling in wood
When drilling in wood, the best results are obtained with
wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the bit into the
workpiece.
Drilling in metal
To prevent the bit from slipping when starting a hole,
make an indentation with a center-punch and hammer
at the point to be drilled. Place the point of the bit in the
indentation and start drilling.
Use a cutting lubricant when drilling metals. The
exceptions are iron and brass which should be drilled
dry.
CAUTION:
•
Pressing excessively on the tool will not speed up
the drilling. In fact, this excessive pressure will
only serve to damage the tip of your bit, decrease
the tool performance and shorten the service life
of the tool.
•
There is a tremendous force exerted on the tool/bit
at the time of hole break through. Hold the tool
firmly and exert care when the bit begins to break
through the workpiece.
•
A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to
back out. However, the tool may back out abruptly
if you do not hold it firmly.
•
Always secure small workpieces in a vise or
similar hold-down device.
•
If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
Using the tool as a hand screwdriver
Fig.9
Switch off the tool.
Move the lock button to the locked position A.
Turn the tool.
Summary of Contents for DF330DWE
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