Impact Drill Safety Warnings - SPARKY HeavyDuty BU2 350 Instrucciones De Uso

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 10.
(Fig. 1)
▪ Switching off: Release ON/OFF switch 10.
Continuous operation
▪ Switching on: Press ON/OFF switch 10 and in
pressed position lock it by button 11. (Fig. 2)
▪ Switching off: Press ON/OFF switch 10 once
and release it immediately.
TWO-SPEED SELECTOR SWITCH
Rotate switch 12 to 180° clockwise or counter-
clockwise, in order to select one or the other
speed range. The direction of rotation for switch-
ing is shown on the switch. (Fig. 3)
TRIGGER SPEED CONTROL
(BUR2 350E)
Set the maximum speed necessary by rotating
thumbwheel 9 in position A - G. Position A cor-
responds to minimum rpm, position G - to maxi-
mum rpm.
Light pressure on ON/OFF switch 10 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. (Fig. 4)
REVERSING (BUR2 350E)
The extreme position of lever 8 to the right (Fig.
5a) is equivalent to clockwise rotation, the ex-
Original instructions
treme position to the left - to anti-clockwise rota-
tion (Fig. 5b). When ON/OFF switch 10 is de-
pressed lever 8 can not be actuated. Reversing
can be performed only when the spindle is not
rotating!
WARNING: Do not overload the
machine while operating it at left run. There
is a danger of tearing the securing screw and
unwinding the chuck.
OPERATION MODE SELECTION
▪ Drilling in metal, wood, etc. The switch 4 is in
its extreme right position the symbol "drill bit"
being exposed. (Fig. 6a)
▪ Drilling in concrete, stone, etc. The ON/OFF
switch 4 is in its extreme left position and the
symbol "hammer" is exposed. (Fig. 6b)
Switching the operation modes can be per-
formed while the machine is operated.
INSERTING AND fASTENING DRILL
BITS
Through turning the collar of the chuck 1 clock-
wise or counter-clockwise the jaws are posi-
tioned so the drill bit shank can be inserted
inside the choke (Fig. 7a). By turning the collar
of chuck 1 counter-clockwise (looking towards
the chuck) the jaws tighten the drill bit shank. Fix
the drill bit finally in the chuck by means of the
chuck key, tightening equally in all three bores
(Fig. 7b).
PROTECTIVE CLUTCH
The machine is equipped with protective clutch.
An audible click is heard upon actuating the
clutch and the spindle halts or barely rotates.
WARNING: The reactive torque upon
actuating the protective clutch provokes
considerable strain on the operator's hands.
The reactive torque is overcome mainly
by the auxiliary handle. The strain on the
operator's hand holding the auxiliary handle is
considerable and amounts to 250 N (25 kg).
Therefore the grip on the auxiliary and the
back handle should be firm. To ensure more
reliable grip we recommend perpendicular
orientation of the auxiliary handle towards the
back handle during assembly.
7
EN