8.2
Switching on/off
To start the machine, press the trigger (12).
The speed can be changed at the trigger.
The electronic soft start continuously accelerates
the machine up to the pre-selected speed
(machines with VTC electronics UHE 26 Multi,
UHE 28 Multi only).
For continuous operation the trigger can be locked
with the lock button (11). To stop the machine,
press the trigger again.
If switched on continuously, the machine
continues running if it is jerked out of your
hands. Therefore, always hold the
machine with both hands on the handles, stand
safely, and concentrate on your work.
8.3
Speed preselection
Depending on the application, the optimum speed
is preset with the pre-selector wheel (8).
8.4
Operating mode selection
Select the desired operating mode by turning the
control knob (13). To turn, push the stop (14).
Twist drilling 1st gear
(high torque)
Twist drilling 2nd gear
(high speed)
Hammer drilling
(only with use of hammer drill chuck)
Chiselling
(only with use of hammer drill chuck)
In chisel mode the chisel is locked to be twist-
proof. To position the chisel for the particular
application, set the control knob (13) between
and
.
When a chisel is fitted, only operate the
machine in the chiselling operating mode.
.
Avoid levering movements of the machine
when a chisel is fitted.
8.5
Selection of direction of rotation
Do not actuate the rotation selector
switch (10) unless the motor has
completely stopped.
Select direction of rotation:
R = clockwise
L = counter-clockwise
8.6
Drill chuck change
When changing chucks make sure that
the spindle is clean. Grease spindle lightly
if required.
Removing the chuck:
Turn chuck lock (5) in direction indicated by arrow
against the stop (a) and pull it off the spindle (b).
Replacing the chuck:
Place chuck onto spindle (6) (a). Turn chuck
lock (5) in direction indicated by arrow (b) until
chuck slides fully onto the spindle, then release
the chuck lock.
Check to see that the chuck is properly seated.
Note: To keep the spindle from turning while
changing chucks, set the control knob (13) to
chiselling.
8.7
Tool Change with SDS Chuck
Before fitting, clean tool shank and
apply special grease (accessories
order no. 6.31800)! Use only SDS-plus tools.
Inserting the tool:
Turn the tool while inserting, until it engages.
The tool is automatically locked.
ENGLISH
ENG
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