Bosch GPL5 Instrucciones De Funcionamiento página 9

A
– Align the height of the tool (using the tripod
or by underlaying, if required) in such a
manner that the center point of the laser
beam is projected exactly against the
previously marked point II on wall B.
A
d
– Rotate the tool by 180° without changing
the height. Allow it to level in and mark the
center point of the laser beam on wall A
(point III). Take care that point III is as
vertical as possible above or below point I.
– The difference d of both marked points I
and III on wall A indicates the actual height
deviation of the tool.
On the measuring distance of 2 x 78 ft = 156
ft, the maximum allowable deviation is:
156 ft x ±0.0036 in/ft = ±9/16 in(.563).
Thus, the difference d between points I and
III should not exceed 9/16 in (max.).
Checking the Vertical Leveling Accuracy
For this check, a free measuring distance of
approx. 13 ft between floor and ceiling on a
firm surface is required.
– Draw a straight line on the ceiling.
– Mount the tool to the multi-purpose
attachment or a tripod. Switch the tool on
and rotate it in such a manner that the
bottom plumb beam can be seen on
the floor.
B
B
180˚
-9-
– Position the tool in such a manner that the
upper plumb beam points against the line
on the ceiling. Allow the tool to level in.
Mark the center of the upper laser point on
the line on the ceiling (point I). Also, mark
the center of the laser point on the floor
(point II).
– Rotate the tool by 180°. Position it in such
a manner that the center of the bottom
laser point is directed on the already
marked point II and the upper laser point is
directed against the line on the ceiling.
Allow the tool to level in. Mark the center
of the upper laser point on the line on the
ceiling (point III).
– The difference d of both marked points I
and III on the ceiling results in the actual
deviation of the tool to the plumb line.
On the measuring distance of 2 x 13 ft = 26 ft
, the maximum allowable deviation is:
26 ft x ±0.0036 in/ft = ±3/16 in.
Thus, the difference d between points I and
III should not exceed 3/16 in (max.).
Recalibration Procedure
All tools are calibrated when processed
through the Bosch quality control program.
This process assures that the customer
receives a superior product which conforms
to the Product Specifications. Although tools
have been calibrated before reaching our
customers, it contains many precision
machined parts which may be affected if the
instrument is subjected to abuse. Therefore,
if the device is ever dropped or sustains
13 ft
d