7
Original instructions
EN
ON position, the power tool will start operat-
ing immediately, which could cause a serious
accident.
▪ Make sure that the cord and the plug are in
order. If the replacement of the supply cord is
necessary, this has to be done by the manu-
facturer or his agent in order to avoid a safety
hazard.
WARNING:
Always switch off and
unplug the power tool prior to any adjustment,
servicing or maintenance.
▪ In case the work area is remote from the pow
-
er source, use as short as practicable exten-
sion cord with proper cross-section.
▪ Check that the auxiliary handle is properly
mounted and reliably tightened.
WARNING:
Prior to operation always
check the direction of rotation. Shift the
reversing switch only when the spindle has
come to a complete stop. Reversing prior to
final spindle halt may damage the power tool.
SWITCHING ON - SWITCHING Off
Brief activation
▪ Switching on: press ON/OFF switch 12.
▪ Switching off: release ON/OFF switch 12.
Continuous operation
▪ Switching on: press ON/OFF switch 12 and in
pressed position lock it by button 13.
▪ Switching off: press ON/OFF switch 12 once
and release it immediately.
TWO-SPEED SELECTOR SWITCH
Rotate switch 14 to 180° clockwise or anti-clock-
wise, in order to select one or the other speed
range.
TRIGGER SPEED CONTROL
Light pressure on ON/OFF switch 12 results
in low rotation speed, further pressing the trig-
ger results in smooth increase of the rpm to the
pre-selected maximum by thumbwheel 9 upon
reaching the extreme position.
SELECTION Of RPM VALUE
(BUR2 250CET, BUR2 250E)
The necessary speed can be preselected by ro-
tating the regulator dial 11:
- Position A corresponds to minimum speed;
- Position G corresponds to maximum speed;
thus ensuring the optimum mode for drilling in
different materials - metal, wood, plastics, etc.
TORqUE CONTROL (BUR2 250CET)
Select the toque by regulator 10, as:
- Position I corresponds to minimum torque.
- Position III corresponds to maximum torque.
Use maximum torque for normal drilling. Do not
operate the machine continuously at low speed
and high torque.
LED 15 indicates the state of the tool.
- Constant glow: the machine is supplied from
the mains, right rotation direction of the spindle;
- Blinking slowly: the machine is supplied from
the mains, left rotation direction of the spindle;
- Blinking fast: the machine is supplied from the
mains, the protection against mains drop-out
has been actuated. To restore normal operation
it is necessary to first switch off and then switch
on the power tool by the ON/OFF switch 12;
- Asymmetric fast blinking: the machine is con-
nected to the plug, but in this case there is mains
drop-out or momentary voltage drop. To restore
normal operation it is necessary to first switch
off and then switch on the power tool by the ON/
OFF switch 12.
REVERSING
The extreme position of lever 9 to the right is
equivalent to clockwise rotation, the extreme
position to the left - to anti-clockwise rotation.
When ON/OFF switch 12 is depressed lever
9 can not be actuated. Reversing can be per-
formed only when the spindle is not rotating!
The rotation speed to the left is lower than the
rotation speed to the right.
OPERATION MODE SELECTION
▪ Drilling in metal, wood, etc. The switch 5 is in
its extreme right position the symbol “drill bit”
being exposed.
▪ Drilling in concrete, stone, etc. The opera
-
tion mode selector switch 5 is in its extreme
left position and the symbol “hammer” is ex-
posed.
Switching the operation modes can be per-
formed while the machine is operated.
SCREWING/UNSCREWING BOLTS,
SCREWS AND NUTS (BUR2 250CET,
BUR2 250E)
Tighten the corresponding accessory for screw-
Summary of Contents for BU2250
Page 58: ......
