Checking Plumb Accuracy - Bosch GCL100-80C Instrucciones De Funcionamiento Y Seguridad

– Mark the center of the vertical laser line at
the floor of the door opening (point I), at
a distance of 16 ft (5 m) beyond the other
side of the door opening (point II) and at
the upper edge of the door opening (point
III).
– Rotate the tool by 180° and position it on
the other side of the door opening directly
behind point II. Allow the tool to level in and
align the vertical laser line in such a manner
that its center runs exactly through points I
and II.
– Mark the center of the laser line at the
upper edge of the door opening as point IV.
– The difference d of both marked points III
and IV results in the actual deviation of the
tool to the plumb line.
– Measure the height of the door opening.
The maximum admissible deviation is
calculated as follows:
Repeat the measuring procedure for the
second vertical laser plane. For this, select
an operating mode in which a vertical laser
plane is generated aside of the tool. Turn the
tool 90° before beginning with the measuring
procedure.
Doubled height of the door opening x 0.004
in/ft
Example: For a door-opening height of 6.5ft,
the maximum deviation may be
2 x 6.5 ft x ±0.004 in/ft = ±1/16 in.
Consequently, points III and IV may be
no more than 1/16 in (max.) apart from
each other.
2610050715 5-19 GCL100-80CCG.indd 20

Checking Plumb Accuracy

For this check, a free measuring distance of
approx. 16 ft (5m) between 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 centre of the lower laser point
is on the point II which has already 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 ceiling results in the actual deviation
of the measuring tool to the plumb line.
The maximum permitted deviation dmax can
be calculated as follows:
d = double the distance between floor and
max
ceiling x 0.009 in/ft
Example: If the distance from the floor to the
ceiling is 5m, the maximum deviation is
d = 2 x 16 ft x 0.009 in/ft = 9/32 in. The
max
marks must therefore be maximum 9/32 in.
apart.
-20-
16 ft
(5 m)
d
180°
6/6/19 7:06 AM