Bosch Appliances GLL2-50 manual Operation, Operating Modes see figures A-D, Pulse Function

Operation

Initial Operation

•Protect the tool against moisture and direct sun irradiation.

•Do not subject the tool to extreme temperatures or variations in temperature.

As an example, do not leave it in vehicles for longer periods. In case of large variations in temperature, allow the

tool to adjust to the ambient temperature before putting it into operation. In case of extreme temperatures or variations in temperature, the accuracy of the tool can be impaired.

•Avoid heavy impact or falling of the tool. After heavy exterior impact on the tool, an accuracy check should always be carried out before continuing to work (see “Leveling Accuracy”).

•Switch the tool off during transport. When switching off, the leveling unit, which can be damaged in case of intense movement, is locked.

Switching On and Off

To switch on the tool, push the On/Off switch 7 to the “ on” position (when working without automatic leveling) or to the “ on” position (when working with automatic leveling). Immediately after switching on, the tool sends laser beams out of the exit openings 1.

•Do not point the laser beam at persons or animals and do not look into the laser beam yourself, not even from a large distance.

To switch off the tool, push the On/Off

switch 7 to the “off” position. When switching off, the leveling unit is locked.

Deactivating the Automatic Shut-off The tool switches off automatically after an operating duration of 30 minutes. To deactivate the automatic switch-off, keep the operating mode button 4 pressed for 3 s while switching on the tool. When the automatic switch-off is deactivated, the laser lines briefly flash after 3 s.

•Do not leave the switched on measuring tool unattended and switch the

tool off after use. Other persons could be blinded by the laser beam.

To activate the automatic shut-off, switch the tool off and then on again (without the

operating mode button 4 pushed).

Operating Modes (see figures A–D)

The tool has three operating modes between which you can switch at any time:

–Horizontal operation “–”: Produces a horizontal laser line,

–Vertical operation “l”: Produces a vertical laser line,

–Cross-line operation “+”: Produces a horizontal and vertical laser line.

All three operating modes can be selected in the automatic leveling mode. In the locked mode, either the horizontal operation or the vertical operation mode can be selected.

After switching on, the tool is in cross-line operating mode. To change the operating mode, press the operating mode button 4.

Pulse Function

The LR2 laser receiver allows the GLL2-50 to be used in situations in which the lines cannot be seen. The pulse function is activated separately from the selection of the operating mode. The GLL2-50 does not work with other laser receivers.

In pulse function, the laser lines flash at very high frequency and thus become detectable for the laser receiver 16.

To switch on the pulse function, press button 3. When the pulse function is switched on, the pulse-function indicator 2 lights up green.

When the pulse function is switched on, the visibility of the laser lines is reduced for the human eye. Therefore, shut off the pulse function by pushing button 3 again when working without laser receiver. When the pulse function is switched off, the pulse- function indicator 2 is deactivated.

Automatic Leveling

Working with Automatic Leveling (see figure C)

Position the tool on a level and firm support or attach it to a commercially available photographic tripod.

When working with automatic leveling, push the On/Off switch 7 to the “ on” position.

After switching on, the leveling function automatically compensates irregularities within the self-leveling range of ±4°. The tool is levelled in as soon as the laser lines no longer flash.

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