Working Advice; Example Applications - Bosch GRL4000-80CH Operating/Safety Instructions Manual

Working Advice

u Only the center of the laser point or laser
line must be used for marking. The size of
the laser point/the width of the laser line
changes depending on the distance.
u The laser level is equipped with a wireless
interface. Local operating restrictions,
e.g. in aeroplanes or hospitals, must be
observed.
Working with the Laser Target Plate
The laser target plate (53) improves visibility
of the laser beam in unfavorable conditions
and at greater distances.
The reflective half of the laser target plate
(53) improves visibility of the laser line. The
transparent half enables the laser line to be
seen from behind the laser target plate.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable
support surface for measuring. For horizontal
operation, place the laser level with the 5/8"
tripod mount (18) on the thread of the tripod
(44). Tighten the laser level using the locking
screw of the tripod.
For vertical operation, use the 5/8" tripod
mount (20).
On a tripod featuring a measuring scale on
its extender, you can set the height deviation
straight away.
Roughly align the tripod before switching on
the laser level.
Laser Goggles (Accessory)
The laser goggles filter out ambient light. This
makes the light of the laser appear brighter
to the eye.
u Do not use the laser goggles as protective
goggles. The laser goggles make the laser
beam easier to see; they do not protect you
against laser radiation.
u Do not use the laser goggles as sunglasses
or while driving. The laser goggles do not
provide full UV protection and impair your
ability to see colors.
Working with a wall mount and alignment
unit (see figure D)
The laser level can be secured to the wall us-
ing the wall mount with the alignment unit
(45). Using the wall mount is recommended,
e.g. when working above the maximum exten-
sion height of tripods, or when working on
unstable surfaces without a tripod.
Fasten the wall mount (45) either to a wall us-
ing screws through the fixing holes (47) or to
a strip of wall using the fastening screw. (46)
Fit the wall mount as perpendicular as pos-
sible to the wall and ensure it is mounted in
a stable way.
Screw the 5/8" wall mount screw (50) into
the horizontal tripod mount (18), depending
on the requirements of the task, or the verti-
cal tripod mount (20) on the laser level.
Using the alignment unit allows the laser level
to be moved in a range of approx. 13 cm with
respect to height. Press the button (48) and
move the alignment unit to roughly the re-
quired height. It is possible to align the laser
beam precisely to a reference height using the
fine adjustment screw (49).
Working with the measuring rod (acces-
sory) (see figure E)
To check levels or apply slopes, it is recom-
mended to use the measuring rod (43) togeth-
er with the laser receiver.
A relative measuring scale is incorporated at
the top of the measuring rod (43). You can
preselect its zero at the bottom on the ex-
tender. This enables you to read deviations
from the target height straight away.

Example applications

Projecting/checking heights (see figure F)
Position the laser level in the horizontal posi-
tion on a firm support or mount it on a tripod
(44) (accessory).
Working with a tripod: Set the laser beam
at the required height. Project or check the
height at the target location.
Working without a tripod: Determine the
height difference between the laser beam
and the height at the reference point using
the laser target plate (53). Project or check
the height difference measured at the target
location.
Parallel alignment of a plumb beam/project-
ing right angles (see figure F)
When right angles are to be projected or parti-
tion walls are to be aligned, the plumb beam
(10) must be aligned in parallel, meaning at
the same distance to a reference line (e.g. a
wall).
For this, set up the laser level in the vertical
position and position it in such a manner that
the plumb beam runs approximately parallel
to the reference line.
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