Bosch GPL 5 R Instrucciones De Funcionamiento Y Seguridad página 9

GPL5 manual-3_REV3:Bosch 10/26/11 6:48 PM Page 9
– 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
significant impact, the user should check
calibration by following these steps:
1. Select a site to be used as a calibration
range that will allow the tool to be placed
between two smooth vertical surfaces
directly opposite each other at a 100'
distance. (50' minimum)
2. Locate the two calibration ports on the
front and side of tool with a flathead
screwdriver.
3. Set tool on a level surface at one end of
the range.
4. When calibrating, position the side laser
beam (on the calibration port side) on the
vertical surface at the opposite end of the
range and mark this point on the surface.
d
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5. Rotate tool around 180 degrees, taking
care not to change the height of
the device.
6. Position the other side laser beam on the
same vertical surface and mark this point
on the surface.
7. If this second mark is positioned at the
same height as the mark made in step 4,
proceed to step 13, otherwise, proceed to
the next step.
8. The goal of the next few steps is to
position both side beams at a height
halfway between the marks made in step
4 and in step 6.
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9. Insert the screwdriver into the side
calibration port. Locate the calibration
screw and rotate it in a clockwise
direction to lower the beam or in the
counter clockwise direction to raise
the beam. Ensure that the beam is at a
height exactly halfway between the
marks made in Steps 4 and 6. Mark this
point on the surface.
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