Challenge CDT16180 Manual page 9

Warning: Do not operate for long
periods at low speed because
excess heat will be produced internally.
2. SWITCH LOCK
The switch trigger can be locked in the
OFF position. This helps to reduce the
possibility of accidental starting when not
in use. To lock the switch trigger, place
the direction of Forward/Reverse rotating
control in the center position by pushing
the direction buttons on either side of the
drill.
3. FORWARD&REVERSE SWITCH (SEE
C & D)
For drilling and screw driving use forward
rotation marked "
the left). Only use reverse rotation marked
" " (lever is moved to the right) to
remove screws or release a jammed drill
bit.
Warning: Never change the
direction of rotation when the chuck
is rotating, Wait until it has stopped.
Fig.C
Reverse
Fig.D
4. KEYLESS CHUCK FITTING/
REMOVING DRILL (SEE FIG.E)
To fit or remove a drill open chuck by
" (lever is moved to
Forward
HELPLINE NO 08707252949
holding the inner chuck ring with one hand,
and with the other hand turn the outer
chuck ring anti-clockwise to open.
Insert drill, drill must reach the bottom
of the chuck. Turn the outer chuck ring
clockwise to tighten.
Fig.E
5. TORQUE ADJUSTMENT (SEE FIG.F)
(Screw driving force of your drill driver)
The torque is adjusted by rotating the
torque adjustment ring. The torque is
greater when the torque adjustment ring is
set on a higher setting. The torque is less
when the torque adjustment ring is set on
a lower setting.
Make the setting as follows:
1 low setting, e. g., small screws, soft
materials.
9 high setting, e. g., large screws, hard
materials.
for heavy drilling
Fig.F
6. DRILLING
When drilling hard smooth surfaces, use
a center punch to mark the desired hole
location. This will prevent the drill bit from
slipping off center as the hole is started.
Hold the tool firmly and place the tip of the
bit at the point to be drilled. Depress the
switch trigger to start the tool. Move the
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