Bosch Professional GSL 2 Set Original Instructions Manual page 9

OBJ_BUCH-1607-002.book Page 9 Thursday, February 16, 2012 3:15 PM
Setting Up the Measuring Tool
Set up the measuring tool on the floor surface to be checked,
ensuring that it is firmly positioned.
The levelling accuracy can be influenced through the ambient
temperature. Especially temperature differences occurring
from the ground upward can deflect the laser beam. As the
thermal layering is greatest at ground level, the measuring
tool should always be set up in the centre of the floor surface
to be checked.
Switching On and Off
To switch on the measuring tool, slide the On/Off switch 8 to
the "On" position. Immediately after switching on, the meas-
uring tool sends laser beams out of the exit openings 1.
Do not direct the laser beam at persons or animals (es-
pecially not at their eye level), and do not stare into the
laser beam yourself (not even from a distance).
To switch off the measuring tool, slide the On/Off switch 8 to
the "Off" position. When switching off, the levelling unit is
locked.
When the measuring tool is not moved or remote-controlled
for approx. 30 minutes, it switches off automatically to save
the batteries or the battery pack.
After switching off automatically, switch the measuring tool
off via On/Off switch 8 and then on again, if required.
After switching off automatically, the measuring tool can be
switched on again by pressing any button on the remote con-
trol.
Do not leave the switched on measuring tool unattend-
ed and switch the measuring tool off after use. Other
persons could be blinded by the laser beam.
When exceeding the maximum permitted operating tempera-
ture of 50 °C, the measuring tool switches off to protect the
laser diode. After cooling down, the measuring tool is ready
for operation and can be switched on again.
Operation with battery pack: The "Electronic Cell Protec-
tion (ECP)" protects the lithium ion battery pack against deep
discharging. When the battery pack is discharged, the meas-
uring tool is switched off by a protective circuit.
When the measuring tool switches off automatically due to a
discharged battery pack, switch the measuring tool off with
the On/Off switch 8. Charge the battery pack before switch-
ing the measuring tool on again. Otherwise, the battery pack
could become damaged.
Allowing the Measuring Tool to Level In
After switching on, the levelling function automatically com-
pensates irregularities within the self-levelling range of ±4°.
The levelling is finished as soon as the laser beams do not
move any more.
If the automatic levelling function is not possible, e.g. be-
cause the surface on which the measuring tool stands devi-
ates by more than 4° from the horizontal plane, the laser
beams flash.
Set up the measuring tool in level position and wait for the
self-levelling to take place. As soon as the measuring tool is
within the self-levelling range of ±4°, the laser beams light up
continuously.
Bosch Power Tools
In case of ground vibrations or position changes during opera-
tion, the measuring tool is automatically levelled in again, yet,
possibly to a different height when larger position changes are
the case. Upon re-levelling, check if the two laser beams are
aligned at the reference point (see "Aligning the Height of the
Measuring Tool", page 9) in order to avoid vertical errors.
Aligning the Height of the Measuring Tool
The measuring tool generates two laser beams that can be seen
on the floor surface in front of the measuring tool for distances
beyond 50 cm. The beams must be brought into alignment at
this reference point, where they can initially be seen on the
floor surface. For this, turn the thumbwheel for height adjust-
ment 9 clockwise or anticlockwise, until both laser beams over-
lap at the reference point and only one beam can be seen.
When the two laser beams cannot be aligned by turning the
thumbwheel, the position of the measuring tool is significant-
ly above or below the floor surface. Position the measuring
tool at a different location on the floor surface with less height
deviation and align the laser beams there.
Starting Operation of the Remote Control
Protect the remote control against moisture and direct
sunlight.
Do not subject the remote control to extreme tempera-
tures or variations in temperature. As an example, do not
leave it in vehicles for longer periods. In case of large varia-
tions in temperature, allow the remote control to adjust to
the ambient temperature before putting it into operation.
The remote control remains ready for operation as long as a
battery with sufficient voltage is inserted.
The signals of the remote control should reach the reception
lens 4 directly from the front and inclined from above. When
the remote control cannot be pointed directly against a recep-
tion lens, the working range is reduced. By reflecting the sig-
nal (e.g. against walls), the working range can be improved,
even for indirect signals.
Switching the measuring tool on via the remote control after
automatic shut-off of the measuring tool is only possible when
the On/Off switch 8 is still in the "On" position. Switching the
measuring tool off with the remote control is not possible.
Measuring Procedure
Automatic Rotation
To check the surface, rotate the upper part of the measuring
tool with the remote control. Manual rotation is not possible.
The following rotation modes are available:
Press button 19 to start fast, continuous rotation in
clockwise direction. Pressing button 19 again ends
the rotation.
Press button 14 to start fast, continuous rotation in
anticlockwise direction. Pressing button 14 again
ends the rotation.
Press button 18 to start slow, continuous rotation in
clockwise direction. Pressing button 18 again ends
the rotation.
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1 618 C00 60E | (16.2.12)