Bosch GCL 25 Professional Original Instructions Manual page 13

Point and line lasers
– Line mode
Weight according to
EPTA-Procedure 01:2014
Dimensions (length × width ×
height)
Protection rating
A) The working range may be reduced by unfavourable environ-
mental conditions (e.g. direct sunlight).
B) Only non-conductive deposits occur, whereby occasional tem-
porary conductivity caused by condensation is expected.
The serial number (10) on the type plate is used to clearly identify
your measuring tool.
Fitting
Inserting/changing the batteries
It is recommended that you use alkaline manganese batter-
ies to operate the measuring tool.
To open the battery compartment cover (8), push the lock-
ing mechanism (7) in the direction of the arrow and lift the
battery compartment cover. Insert the batteries.
When inserting the batteries, ensure the polarity is correct
according to the representation on the inside of the battery
compartment cover (8).
If the batteries become weak, the battery warning (3) will
flash red. The laser beams will also flash every 10 mins for
approx. 5 s. The measuring tool can still be operated for ap-
prox. one hour after the first flash. If the batteries drain com-
pletely, the laser beams will flash one more time just before
automatic shut-off.
Always replace all the batteries at the same time. Only use
batteries from the same manufacturer and which have the
same capacity.
Take the batteries out of the measuring tool when you
u
are not using it for a prolonged period of time. The bat-
teries can corrode and self-discharge during prolonged
storage.
Operation
Start-up
Protect the measuring tool from moisture and direct
u
sunlight.
Do not expose the measuring tool to any extreme tem-
u
peratures or variations in temperature. For example,
do not leave it in a car for extended periods of time. In
case of large variations in temperature, allow the measur-
ing tool to adjust to the ambient temperature before put-
ting it into operation. The precision of the measuring tool
may be compromised if exposed to extreme temperat-
ures or variations in temperature.
Avoid substantial knocks to the measuring tool and
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avoid dropping it. Always carry out an accuracy check
Bosch Power Tools
before continuing work if the measuring tool has been
GCL 25
subjected to severe external influences (see "Accuracy
30 h
Check of the Measuring Tool", page 14).
0.58 kg
Switch the measuring tool off when transporting it.
u
The pendulum unit is locked when the tool is switched off,
as it can otherwise be damaged by big movements.
155 × 56 × 118 mm
Switching On/Off
IP 54 (dust and splash-
To switch on the measuring tool, slide the on/off switch (4)
proof)
to the " On" position (for working without automatic level-
ling) or to the "
levelling). As soon as it is switched on, the measuring tool
emits laser beams from the outlet apertures (1).
Do not direct the laser beam at persons or animals and
u
do not stare into the laser beam yourself (even from a
distance).
To switch off the measuring tool, slide the on/off switch (4)
to the "Off" position. The pendulum unit is locked when the
tool is switched off.
Never leave the measuring tool unattended when
u
switched on, and ensure the measuring tool is
switched off after use. Others may be blinded by the
laser beam.
Deactivating the Automatic Shut-Off Function
If no button on the measuring tool is pressed for approx.
30 min., the measuring tool will automatically switch itself
off to preserve battery life.
To switch the measuring tool back on after it has been auto-
matically switched off, you can either slide the on/off
switch (4) to the "Off" position first and then switch the
measuring tool back on, or press the laser operating mode
button (2).
To deactivate the automatic shut-off function, hold down the
laser mode button (2) for at least 3 s (with the measuring
tool switched on). If the automatic shut-off function is deac-
tivated, the laser beams will flash briefly as confirmation.
To activate the automatic shut-off function, switch the meas-
uring tool off and on again.
Operating Modes
The measuring tool has several operating modes, which you
can switch between at any time:
– Cross-line and point mode: The measuring tool generates
one horizontal and one vertical laser line pointing for-
wards, two vertical point beams (one pointing upwards
and one downwards), and three horizontal point beams
(one pointing forwards and one to either side).
– Five-point mode: The measuring tool generates two ver-
tical point beams (one pointing upwards and one down-
wards), and three horizontal point beams (one pointing
forwards and one to either side).
– Horizontal line mode: The measuring tool generates a ho-
rizontal laser line pointing forwards.
– Vertical line mode: The measuring tool generates a ver-
tical laser line pointing forwards.
English | 13
On" position (for working with automatic
1 609 92A 4HF | (20.08.2018)