Bosch Appliances GLL2-50 manual Leveling Accuracy, Influences on Accuracy

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If the automatic levelling function is not

possible, e.g. because the surface on which the tool stands deviates by more than 4° from the horizontal plane, the laser beams flash. In this case, bring the tool to the level position and wait for the self-levelling to take place.

In case of ground vibrations or position changes during operation, the tool is automatically levelled in again. To avoid errors, check the position of the horizontal and vertical laser line with regard to the reference points upon re-levelling.

Lock Mode - Working without Automatic Levelling (see figure D)

For work without automatic levelling, push the On/Off switch 7 to the “ on” position. When the automatic levelling is switched off, the laser line flash continuously.

When the automatic levelling is switched off, the tool can be held by hand or placed on an inclined surface.

Working Advice

•Always use the center of the laser line for marking. The width of the laser line changes with the distance.

Leveling Accuracy

Influences on Accuracy

The ambient temperature has the greatest influence. Especially temperature differences occurring from the ground upward can divert the laser beam.

Because the largest difference in

temperature layers is close to the ground, the tool should always be mounted on a tripod when measuring distances exceeding 65 ft. If possible, also set up the tool in the centre of the work area.

Apart from exterior influences, device specific influences (such as heavy impact or falling down) can lead to deviations. Therefore, check the accuracy of the tool each time before starting your work.

First, check both the height as well as the leveling accuracy of the horizontal laser line, then the leveling accuracy of the vertical laser line.

Should the tool exceed the maximum deviation during one of the tests, please have it repaired by a Bosch after-sales service center.

Checking the Height Accuracy of the Horizontal Line

For this check, a free measuring distance of approximately 26 feet on a firm surface between two walls A and B is required.

–Mount the tool onto a tripod or place it on a firm and level surface close to wall A. Switch on the tool. Select cross-line operation with automatic leveling.

AB

26 ft

–Direct the laser against the close wall A and allow the tool to level in. Mark the center of the point where the laser lines cross each other on the wall (point I).

AB 180˚

–Turn the tool by 180°, allow it to level in and mark the cross point of the laser lines on the opposite wall B (point II).

AB

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Contents Read Before Using Ver la página618 C01 Page 607 990 601 015 B10 601 069 601 015 A10 Page General Safety Rules Always be Aware of their location when using the toolCluttered or dark areas invite accidents Work area safety Keep work area clean and well litElectrical safety SaferInserting/Replacing the Battery FeaturesTechnical Data Intended UseOperating Modes see figures A-D OperationPulse Function Influences on Accuracy Lock Mode Working without Automatic Levelling see figure DLeveling Accuracy Checking the Height Accuracy of the Horizontal Line180˚ B Checking the Leveling Accuracy of the Horizontal LineUse with Attachments Checking the Leveling Accuracy of the Vertical LineWorking with the Tripod Optional Accessory Maintenance and ServiceWorking with the Measuring Plate Accessory Laser Viewing Glasses Optional Accessory see figure HLimited Warranty of Bosch Laser Measuring Tool Products Consignes générales de sécurité Utilisez loutil correct pour votre applicationSécurité électrique Service aprŹs-venteSécurité sur le lieu de travail Sécurité personnellePréparation Emploi prévuDonnées techniques Consignes d’utilisation Mise en serviceMode opératoire voir fig. A-D Désactiver la coupure automatiqueInfluences sur la précision Précision de nivellementContrôler la précision de hauteur des lignes horizontales Point Contrôler la précision de nivellement de la ligne verticaleTravailler avec le trépied accessoire Utiliser avec accessoriesIl peut aussi être utilisé comme mini-trépied Maintenance et service Normas generales de seguridad AdvertenciaTener fugas y causar Seguridad en el área de trabajoSeguridad eléctrica Seguridad personalCaracterísticas Uso previstoPreparación Datos TécnicosOperación On. Estando desconectada la nivelación Precisiónde NivelaciónAparato de medición y espere a que se autonivele Instrucciones para la operación180˚ B La altura Utilice con accesorios especialTambién se puede utilizar como minitrípode Aplicación de la placa de medición accesorio especialLos colores Mantenimiento y servicioOperación con trípode accesorio especial Recicle materias primas en vez de botarlas a la basura
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