Technical Data; Inserting/Changing The Batteries; Starting Operation - Bosch GLL 2-20 Professional Manual Original

A)
(24) Case
A) Accessories shown or described are not included with the
product as standard. You can find the complete selection of
accessories in our accessories range.

Technical data

Cross line laser
Article number
Working range (diameter) up to ap-
A)
prox.
B)C)
Levelling accuracy
Typical self-levelling range
Typical levelling time
Operating temperature
Storage temperature
Max. altitude
Relative air humidity max.
Pollution degree according to IEC
61010-1
Laser class
Laser type
C
6
Divergence
Tripod mount
Batteries
Rechargeable batteries
Approx. operating time
Weight according to EPTA-Proced-
ure 01:2014
Dimensions (length × width ×
height)
A) The working range may be reduced by unfavourable environ-
mental conditions (e.g. direct sunlight).
B) At 20–25 °C
C) The values stated presuppose normal to favourable environ-
mental conditions (e.g. no vibration, no fog, no smoke, no direct
sunlight). Extreme fluctuations in temperature can cause devi-
ations in accuracy.
D) Only non-conductive deposits occur, whereby occasional tem-
porary conductivity caused by condensation is expected.
The serial number (4) on the type plate is used to clearly identify your
measuring tool.
Assembly

Inserting/Changing the batteries

It is recommended that you use alkaline manganese or re-
chargeable batteries to operate the measuring tool.
To open the battery compartment cover (6), press the lock-
ing mechanism (7) and lift open the battery compartment
cover. Insert the batteries/rechargeable batteries.
Bosch Power Tools
When inserting the batteries, ensure the polarity is correct
according to the representation on the inside of the battery
compartment cover (6).
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
GLL 2-20
u
are not using it for a prolonged period of time. The bat-
3 601 K63 J00
teries can corrode and self-discharge during prolonged
20 m
storage.
±0.4 mm/m
Operation
±4°

Starting Operation

4 s
+5 °C ... +40 °C
Protect the measuring tool from moisture and direct
u
sunlight.
–20 °C ... +70 °C
Do not expose the measuring tool to any extreme tem-
u
2000 m
peratures or fluctuations in temperature. For example,
90 %
do not leave it in a car for extended periods of time. If it
D)
2
has been subjected to significant fluctuations in temper-
ature, first allow the measuring tool to adjust to the ambi-
ent temperature and then always carry out an accuracy
2
check before continuing work (see "Accuracy Check of
< 1 mW, 630−650 nm
the Measuring Tool", page 10).
1
The precision of the measuring tool may be compromised
if exposed to extreme temperatures or fluctuations in
1.5 mrad
temperature.
1/4"
Avoid substantial knocks to the measuring tool and
u
4 × 1.5 V LR6 (AA)
avoid dropping it. Always carry out an accuracy check
4 × 1.2 V HR6 (AA)
before continuing work if the measuring tool has been
subjected to severe external influences (see "Accuracy
12 h
Check of the Measuring Tool", page 10).
0.38 kg
Switch the measuring tool off when transporting it.
u
The pendulum unit is locked when the tool is switched off,
85 × 70 × 125 mm
as it can otherwise be damaged by big movements.
Switching On/Off
To switch on the measuring tool, slide the on/off switch (2)
to the "On" position. As soon as it is switched on, the meas-
uring tool emits laser lines 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 (2)
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.
Operating Modes
Once the measuring tool has been switched on, it is in cross-
line operation with automatic levelling.
To change the operating mode, press the Mode button for
laser operating mode (9) until the required laser operating
English | 9
1 609 92A 4HK | (08.10.2020)