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Inserting/Replacing the Battery
Protect the tool against moisture and Alkali-
manganese batteries are recommended for the
measuring tool.
To open the battery lid
9, slide the latch 8 in
the direction of the arrow and fold the battery
lid up. Insert the batteries. When inserting, pay
attention to the correct polarity according to the
representation on the inside of the battery lid.
When the batteries are low, the battery low
indicator
3 flashes red. Additionally, the
laser beams flash for approx. 5 s every 10
minutes. When the flashing initially begins, the
measuring tool can be operated for approx.
1 more hour. When the batteries become
empty, the laser beams flash one more time
directly prior to the automatic shut-off. Always
replace all batteries at the same time. Only use
batteries from one brand and with the identical
capacity.
Remove the batteries from the measuring tool
when not using it for extended periods. When
storing for extended periods, the batteries can
corrode and discharge themselves.
Initial Operation
Protect the measuring tool
against moisture and direct
sun light.
Do not subject the measuring tool
to extreme temperatures or variations
in temperature. As an example,
do not leave it in vehicles for long
time. In case of large variations
in temperature, allow the measuring tool
to adjust to the ambient temperature
before putting it into operation.
In case
of extreme temperatures or variations in
temperature, the accuracy of the measuring tool
can be impaired.
Avoid heavy impact or falling of the
measuring tool. After heavy exterior impact
on the measuring tool, an accuracy check
should always be carried out before continuing
to work (see “Levelling Accuracy”).
Switch the measuring tool off during
transport. When switching off, the levelling
unit, which can be damaged in case of intense
movement, is locked.
Switching On and Off
To switch on the measuring tool, slide the
On/Off switch 4 to the “
on” position (when
working without automatic levelling) or to the “
on” position (when working with automatic
levelling). Immediately after switching on, the
measuring tool sends laser beams out of the
exit openings 1.
Do not point the laser
beam at persons or
animals and do not look into the laser
beam yourself, not even from a large
distance.
To switch off the measuring tool, slide the
On/Off switch 4 to the “off” position. When
switching off, the levelling unit is locked.
Deactivating the Automatic Shut-off
When no button on the measuring tool is
pressed for approx. 30 minutes, the measuring
tool automatically switches off to save the
batteries.
To
switch on the measuring tool after
automatic shut-off, either slide the On/Off
switch 4 to the “off” position and then switch the
measuring tool on again or press the operating
mode button 2 once.
Assembly
Operation
Point and Line Laser GCL 25 Professional
Battery life for the operating modes
– Cross and point-line operation
– 5-Point operation
– Line operation
12 h
20 h
30 h
Weight 1.32 lbs
Dimensions (length x width x height)
6.1 x 2.2 x 4.6 in (155 x 56 x 118 mm)
Degree of protection IP54 (dust and splash water protected)
Technical Data
!
WARNING
!
WARNING
GCL 25 Manual with translations.indd 8 4/24/12 8:29 AM