Working Advice; Maintenance And Service; Maintenance And Cleaning; After-Sales Service And Application Service - Bosch GCL Professional 2-50 C Originalbetriebsanleitung

Checking plumb accuracy
For this check, a free measuring distance of approx. 5 m be-
tween floor and ceiling on a firm surface is required.
– Mount the measuring tool onto the rotating mount and
place it on the floor.
– Switch the measuring tool on and allow it to level.
– Mark the centre of the upper crossing point on the ceiling
(point I). Also mark the centre of the bottom laser point on
the floor (point II).
– Rotate the measuring tool 180°. Position it so that the cen-
tre of the lower laser point is on the point II which has al-
ready been marked. Allow the measuring tool to level.
Mark the centre of the upper laser point (point III).
– The difference d of both marked points I and III on the ceil-
ing results in the actual deviation of the measuring tool to
the plumb line.
The maximum permitted deviation d
follows:
d = double the distance between floor and ceiling
max
x 0.7 mm/m
Example: If the distance from the floor to the ceiling is 5 m,
the maximum deviation is
d = 2 x 5 m x 0.7 mm/m = 7 mm. The marks must there-
max
fore be maximum 7 mm apart.

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.
 The measuring tool is equipped with a radio interface.
Local operating restrictions, e.g. in airplanes or hospi-
tals, are to be observed.
Bosch Power Tools
5 m
d
180°
can be calculated as
max
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface for
measuring. Place the measuring tool with the 1/4" tripod
mount 16 on the thread of the tripod 30 or a conventional
camera tripod. Tighten the measuring tool using the locking
screw of the tripod.
Adjust the tripod roughly before switching on the measuring
tool.
Fastening with the Universal Holder (Accessory)
(see figure G)
With the universal holder 25, you can fasten the measuring
tool, e.g., to vertical surfaces, pipes or magnetisable materi-
als. The universal holder is also suitable for use as a ground tri-
pod and makes the height adjustment of the measuring tool
easier.
Adjust the universal holder roughly before 25 switching on
the measuring tool.
Working with the Laser Target Plate (see figure G)
The laser target plate 34 increases the visibility of the laser
beam under unfavourable conditions and at large distances.
The reflective part of the laser target plate 34 improves the
visibility of the laser line. Thanks to the transparent part, the
laser line is also visible from the back side of the laser target
plate.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out ambient light. This enhanc-
es the laser visibility for the eye.
Work Examples (see figures B2–F2, G and H)
Applicational examples for the measuring tool can be found
on the graphics pages.
Always position the measuring tool close to the surface or
edge you want to check, and allow it to level in prior to each
measurement.

Maintenance and Service

Maintenance and Cleaning

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
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.

After-sales Service and Application Service

Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the product.
English | 27
1 609 92A 2U5 | (27.2.17)