Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch Professional GLL 3-15 X Manual Original

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OBJ_BUCH-2751-003.book Page 10 Monday, June 20, 2016 10:34 AM
10 | English
Checking the Levelling Accuracy of the Vertical Lines
For this check, a door opening is required with at least 2.5 m
of space (on a firm surface) to each side of the door.
– Place the measuring tool 2.5 m away from the door open-
ing on a firm, flat surface (not on the rotating platform or a
tripod). Switch on the measuring tool in the mode with au-
tomatic levelling. Switch on vertical mode with all vertical
laser lines and aim the front vertical laser line at the door
opening. Allow the measuring tool to level in.
– Mark the centre of the vertical laser line at the floor of the
door opening (point I), at a distance of 5 m beyond the
other side of the door opening (point II) and at the upper
edge of the door opening (point III).
– Position the measuring tool on the other side of the door
opening directly behind point II. Allow the measuring tool
to level in and align the vertical laser line in such a manner
that its centre runs exactly through points I and II.
– The difference d between point III and the centre of the laser
line at the upper edge of the door opening results in the actu-
al deviation of the measuring tool from the vertical plane.
– Measure the height of the door opening.
The maximum permitted deviation d
follows:
d
= double the height of the door opening x 0.2 mm/m
max
Example: If the height of the door opening is 2 m, the maxi-
mum deviation is
d
= 2 x 2 m x 0.2 mm/m = 0.8 mm. The marks must there-
max
fore be maximum 0.8 mm apart.
1 609 92A 301 | (20.6.16)

Working Advice

 For marking, always use only the centre of the laser
point or the laser line. The size of the laser point as well as
the width of the laser line change with distance.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out the ambient light. This
makes the red light of the laser appear brighter for the eyes.
 Do not use the laser viewing glasses as safety goggles.
The laser viewing glasses are used for improved visualisa-
tion of the laser beam, but they do not protect against laser
radiation.
 Do not use the laser viewing glasses as sun glasses or in
traffic. The laser viewing glasses do not afford complete
UV protection and reduce colour perception.
Working with the Tripod (Accessory)
(see figure E)
A tripod offers a stable, height-adjustable support surface for
measuring. Mount the measuring tool on the rotating platform
12. Place the rotating platform with the 5/8" tripod mount 9
on the thread of the tripod 19 or a conventional building tri-
pod. Tighten the rotating platform using the locking screw of
the tripod.
Working with the Measuring Plate (Accessory)
(see figure F–G)
With the measuring plate 18, it is possible to project the laser
mark onto the floor or the laser height onto a wall.
With the zero field and the scale, the offset or drop to the re-
quired height can be measured and projected at another loca-
tion. This eliminates the necessity of precisely adjusting the
measuring tool to the height to be projected.
The measuring plate 18 has a reflective coating that enhances
the visibility of the laser beam at greater distances or in in-
tense sunlight. The brightness intensification can be seen on-
ly when viewing, parallel to the laser beam, onto the measur-
ing plate.
Work Examples (see figures B–E)
Applicational examples for the measuring tool can be found
on the graphics pages.

Maintenance and Service

Maintenance and Cleaning

Store and transport the measuring tool only in the supplied
protective pouch.
Keep the measuring tool clean at all times.
Do not immerse the measuring tool in water or other fluids.
Wipe off debris using a moist and soft cloth. Do not use any
can be calculated as
max
cleaning agents or solvents.
Regularly clean the surfaces at the exit opening of the laser in
particular, and pay attention to any fluff or fibres.
In case of repairs, send in the measuring tool packed in its
protective pouch 20.
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