Starting Operation; Working Advice - Berner BID-S-1 Manual Original

OBJ_BUCH-1318-001.book Page 15 Tuesday, September 28, 2010 1:56 PM
Operation

Starting Operation

¢ Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V can
also be operated with 220 V.
Reversing the Rotational Direction
(see figures G–H)
¢ Actuate the rotational direction switch 3 only
when the machine is at a standstill.
The rotational direction switch 3 is used to reverse the
rotational direction of the machine. However, this is
not possible with the On/Off switch 6 actuated.
Right rotation: For drilling and driving in screws,
push the rotational direction switch 3 downward on
the left side and at the same time upward on the right
side.
Left rotation: For loosening and unscrewing screws
and nuts, push the rotational direction switch 3
upward on the left side and at the same time down-
ward on the right side.
Setting the Operating Mode
Drilling and Screwdriving
Set the selector switch 2 to the "Drilling"
symbol.
Impact Drilling
Set the selector switch 2 to the "Impact
drilling" symbol.
The selector switch 2 engages noticeably and can
also be actuated with the machine running.
Gear Selection, Mechanical
¢ The gear selector 8 can be actuated on
machines running at low speed. However,
this should not be done when the machine is
stopped, at full load or running at maximum
speed.
Two speed ranges can be preselected with the gear
selector 8.
Gear I:
Low speed range; for working with
large drilling diameter or for driving in
screws.
Gear II:
High speed range; for working with
small drilling diameter.
If the gear selector 8 cannot be fully engaged, lightly
rotate the drive spindle with the drill bit by twisting the
drill chuck.
2 609 932 784 • 28.9.10
Switching On and Off
To start the machine, press the On/Off switch 6 and
keep it pressed.
To lock the pressed On/Off switch 6, press the lock-
on button 4.
To switch off the machine, release the On/Off switch
6 or when it is locked with the lock-on button 4, briefly
press the On/Off switch 6 and then release it.
Safety Clutch
To limit high reaction torque, the power tool is
equipped with a safety clutch.
¢ If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted.
Because of the forces that occur, always
hold the power tool firmly with both hands
and provide for a secure stance.
¢ If the power tool jams, switch the machine
off and loosen the tool insert. When switch-
ing the machine on with the drilling tool
jammed, high reaction torques can occur.
Adjusting the Speed/Impact Frequency
The speed/impact rate of the switched on power tool
can be variably adjusted, depending on how far the
On/Off switch 6 is pressed.
Light pressure on the On/Off switch 6 results in low
speed/impact rate. Further pressure on the switch
increases the speed/impact rate.
Preselecting the Speed/Impact Frequency
With the thumbwheel for speed preselection 7, the
required speed/impact frequency can be preselected
even during operation.
The required speed/impact frequency depends on the
material and the working conditions, and can be
determined through practical testing.

Working Advice

¢ Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts can
slip off.
Tips
After longer periods of working at low speed, allow
the machine to cool down by running it for approx.
3 minutes at maximum speed with no load.
For drilling in tiles, set the selector switch 2 to the
"Drilling" symbol. Do not switch over to the symbol
"Impact Drilling" or work with impact until after drilling
through the tile.
Use carbide tipped drill bits when working in con-
crete, masonry and brick wall.
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