Valex T910, Translation Of The Original Operating Instructions

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until it has passed it, insert the support in the
housing provided in the drill body and screw it
in fully (pos.9).
CUTTING TOOL ASSEMBLY
! ! IMPORTANT! While assembling and di-
sassembling the bit, unplug the tool from the
electric power supply.
Self-locking chuck with double ring nut without lock
Turn the front ring nut to open and close the
jaws, holding back the rear ring nut.
In some chuck models you will hear a click
which shows it has been fully tightened.
Check that the bit is properly centred and firmly
held inside the chuck.
STARTING AND STOPPING
! ! WARNING! Before starting the electric
tool, it is mandatory to wear the individual
protective devices (not supplied) listed in the
safety instructions.
! !
IMPORTANT! Make sure nobody is approa-
ching the working area while the tool is running.
Starting
1) Plug the tool into the power supply
2) Position the rotation direction switch (pos.3)
in one of the two operating positions (not in
the centre)
3) Firmly grasp the hand grip (pos.7) in your
hand
4) To start press the button (pos.5)
The switch is a ‘maintained action’ switch so
the electrical tool will stay on when you keep
the switch pressed.
Stopping
To stop the drill release the switch.
Continuous operation
For continuous operation it is necessary to press
the button (pos. 6) so as to lock the switch after
the start-up phases.
Then to stop the tool press the switch (pos. 5)
and release it immediately.
! !
IMPORTANT! When working with the
switch in continuous mode, never let go of the
grip on the main handle so that, in the event
of danger, you can immediately stop the tool.
! ! WARNING! Disinsert the switch retainer
when the machine is put to rest or in case of
sudden shutdown. In the event of a power fail-
ure, place the switch in the Off position, so as to
avoid unexpectedly switching the tool back on.
We recommend repeating these operations several
times before starting work, in order to familiarise
yourself with the controls as far as possible.
If you notice any working defects, switch off
the electrical tool and consult the chapter “Pro-
blems, causes and solutions”.
When not using the tool, turn it off and discon-
nect the plug from the socket.
OPERATIONAL TIPS
After reading the previous chapters carefully,
apply these tips scrupulously to obtain maximum
performance.
Proceed calmly so as to become familiar with
all the controls; after having gained sufficient
experience you will be able to make full use of
its potential.
ELECTRONIC CHUCK SPEED ADJUSTMENT (fig. D)
Press the switch (pos.5) gradually until the
desired speed is reached. With less pressure
low speeds are obtained, whereas with more
pressure high speeds are obtained.
CHUCK SPEED RANGE ADJUSTMENT
Turn the grain roller (pos.4) on the switch, in
order to limit the switch stroke and the maximum
chuck speed.
CHUCK ROTATION DIRECTION REGULATION
(fig. C)
IMPORTANT! The rotation direction inversion
operation must be performed with the tool off
and the chuck stationary.
For drilling operations and tightening right thread
screws (clockwise), move the rotation direction
switch (pos.3) to ‘R’.
For unscrewing operations, or removal of em-
bedded bits and tightening left thread screws
(anti-clockwise), move the rotation direction
switch to ‘L’.
PERCUSSION ACTIVATION AND DEACTIVATION
(fig. E)
IMPORTANT! The percussion activation /deac-
tivation operation must be performed with the
tool off and the chuck stationary.