Bosch GRL Professional 240 HV Operation instructions

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 28U (2015.08) PS / 87 ASIA
GRL Professional
240 HV | 250 HV | 300 HV | 300 HVG
RC 1 Professional
en Original instructions
ja オリジナル取扱説明書
cn 正本使用说明书
tw 原始使用說明書
ko 사용 설명서 원본
th 
id Petunjuk-Petunjuk untuk Penggunaan Orisinal
vi
Bản gốc hướng dẫn sửdụng
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1 609 92A 28U | (3.2.16) Bosch Power Tools
English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
日本語 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ページ 18
中文 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .页29
中文 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .頁38
한국어 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 페이지 47
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Bahasa Indonesia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Halaman 66
Tiếng Việt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trang 76
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Bosch Power Tools 1 609 92A 28U | (3.2.16)
LASER
APERTURE
LASER RADIATION
Avoid direct eye exposure
Class 3R laser product
IEC 60825-1:2007-03
<
5 mW, 532 nm
5
6
7
8
8
9
10
7
11
12
4
3
2
1
13
15
16
17
18
14
GRL 300 HVG
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1 609 92A 28U | (3.2.16) Bosch Power Tools
4|
31
30
29
27
28
26
19
20
21
22
23
24
25
RC 1
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| 5
Bosch Power Tools 1 609 92A 28U | (3.2.16)
ED
CB
A
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1 609 92A 28U | (3.2.16) Bosch Power Tools
6|
100 m
100 m
100 m
100 m
J
IH
GF
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Bosch Power Tools 1 609 92A 28U | (3.2.16)
GR 240:
0 601 094 100
30
32
1 608 M00 05B
(GRL 250 HV/GRL 300 HV)/
1 608 M00 05J
(GRL 300 HVG)
LR 1:
0 601 015 400
LR 1 G:
0 601 069 700
29
1 608 M00 05C
(GRL 250 HV/GRL 300 HV)/
1 608 M00 05K
(GRL 300 HVG)
37
38
2 610 A01 267
31
BT 300 HD:
0 601 091 400
39
1 608 M00 05F
WM 4:
0 601 092 400
33
35
34
36
1 608 M00 05A
RB 24
LR 24
WM 24:
3 601 K92 510
RC 1:
0 601 069 900
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8| English
1 609 92A 28U | (3.2.16) Bosch Power Tools
English
Safety Notes
Rotational Laser Level
All instructions must be read and observed
in order to work safely with the measuring
tool. The integrated protections in the
measuring tool may be compromised if the
measuring tool is not used in accordance
with the instructions provided. Never make warning signs
on the measuring tool unrecognisable. STORE THESE IN-
STRUCTIONS IN A SAFE PLACE AND INCLUDE THEM WITH
THE MEASURING TOOL WHEN GIVING IT TO A THIRD
PARTY.
Caution – The use of other operating or adjusting
equipment or the application of other processing
methods than those mentioned here can lead to
dangerous radiation exposure.
Do not use the laser viewing glasses as safety goggles.
The laser viewing glasses are used for improved visualisa-
tion of the laser beam, but they do not protect against laser
radiation.
Do not use the laser viewing glasses as sun glasses or in
traffic. The laser viewing glasses do not afford complete
UV protection and reduce colour perception.
Have the measuring tool repaired only through quali-
fied specialists using original spare parts. This ensures
that the safety of the measuring tool is maintained.
Do not operate the measuring tool in explosive environ-
ments, such as in the presence of flammable liquids,
gases or dusts. Sparks can be created in the measuring
tool which may ignite the dust or fumes.
Keep the laser target plate 37 and the
ceiling measurement plate 38 away from
cardiac pacemakers. The magnets on the
laser target plate and on the ceiling measure-
ment plate generate a field that can impair the
function of cardiac pacemakers.
Keep the laser target plate 37 and the ceiling measure-
ment plate 38 away from magnetic data medium and
magnetically-sensitive equipment. The effect of the
magnets on the laser target plate and on the ceiling
measurement plate can lead to irreversible data loss.
GRL 240 HV/GRL 250 HV
The measuring tool is provided with a warning label
(marked with number 17 in the representation of the
measuring tool on the graphics page).
If the text of the warning label is not in your national
language, stick the provided warning label in your na-
tional language over it before operating for the first
time.
Do not direct the laser beam at persons
or animals and do not stare into the di-
rect or reflected laser beam yourself, not
even from a distance. You could blind
somebody, cause accidents or damage
your eyes.
If laser radiation strikes your eye, you must deliberate-
ly close your eyes and immediately turn your head
away from the beam.
Do not make any modifications to the laser equipment.
Do not allow children to use the laser measuring tool
without supervision. They could unintentionally blind
other persons or themselves.
IEC 60825-1:2014
<1mW, 635 nm
Laser Radiation Class 2
do not stare into beam
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Bosch Power Tools 1 609 92A 28U | (3.2.16)
GRL 300 HV/GRL 300 HVG
The measuring tool is provided with two warning labels
(marked with numbers 17 and 18 in the representation
of the measuring tool on the graphics page).
If the text of the warning labels is not in your national
language, stick the provided warning labels in your
national language over it before operating for the first
time.
Do not direct the laser beam at persons
or animals and do not look into the laser
beam yourself. This measuring tool gener-
ates laser radiation from class 3R according
to IEC 60825-1. Looking directly into the
laser beam – even from a greater
distance – can cause damages to the eyes.
Avoid reflection of the laser beam on smooth surfaces
such as windows or mirrors. A reflected laser beam can
also cause damage to the eye.
The measuring tool should be operated only by persons
that are familiar with the handling of laser devices.
According to EN 60825-1, this includes, among other
things, the knowledge about the biological effects of the
laser to the eyes and the skin as well as the correct usage
of laser protection devices in order to avoid dangers.
Always set up the measuring tool in such a manner that
the laser beams run far above or below eye level. This
ensures that damage to the eyes will not occur.
Mark the area in which the measuring tool is being used
with suitable laser warning labels. This prevents per-
sons not involved from accessing the danger area.
Do not store the measuring tool at locations to which
unauthorised persons have access. Persons not familiar
with the operation of the measuring toolcan cause harm to
themselves and to others.
When using a class 3R measuring tool, observe
possible national regulations. Non-observance of these
regulations can lead to injury.
Make sure that the area of laser radiation is monitored
or shielded. The limitation of laser radiation to controlled
areas prevents eye damage to persons not involved.
Remote Control
Read and observe all instructions. The inte-
grated protections in the measuring tool may
be compromised if the measuring tool is not
used in accordance with the instructions
provided. SAVE THESE INSTRUCTIONS FOR
FUTURE REFERENCE.
Have the remote control repaired only through a quali-
fied repair person and only using identical replacement
parts. This will ensure that the functionality of the remote
control is maintained.
Do not operate the remote control in explosive atmos-
pheres, such as in the presence of flammable liquids,
gases or dusts. Sparks can be created in the remote
control which may ignite the dust or fumes.
Product Description and
Specifications
Intended Use
Rotational Laser Level
The measuring tool is intended for determining and checking
precise horizontal partitions, vertical lines, building lines and
plumb points.
The measuring tool is suitable for indoor and outdoor use.
Remote Control
The remote control is intended for controlling rotational laser
levels in indoor and outdoor use.
Product Features
The numbering of the product features refers to the illustra-
tion of the rotational laser level and remote control on the
graphics page.
Rotational Laser Level
1Shock-warning indicator
2Shock-warning button
3Automatic levelling indicator
4On/Off button of the rotational laser level
5Button for rotational operation and selection of the
rotation speed
6Variable laser beam
7Reception lens for remote control
8Exit opening for laser beam
9Plumb beam
GRL 300 HV/GRL 300 HVG:
LASER
APERTURE
IEC 60825-1:2014
<
5 mW, 532 nm
GRL 300 HVG:
LASER RADIATION
Avoid direct eye exposure
Class 3R laser product
IEC 60825-1:2014
<
5 mW, 635 nm
GRL 300 HV:
LASER RADIATION
Avoid direct eye exposure
Class 3R laser product
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10 | English
1 609 92A 28U | (3.2.16) Bosch Power Tools
10 Rotation head
11 Button for line operation and line length selection
12 Charge-control indicator
13 Battery compartment
14 Locking knob of the battery compartment
15 Tripod mount 5/8"
16 Serial number of the rotational laser level
17 Laser warning label
18 Warning label, laser radiation exit opening
(GRL 300 HV/GRL 300 HVG)
Remote control*
19 Button on the remote control for rotation operation and
selection of rotational speed
20 Button on the remote control for line operation and
selection of line length
21 Shock-warning reset button
22 Button for “rotation in clockwise direction”
23 Button for “rotation in anticlockwise direction”
24 Operation indicator
25 Outlet opening for infra-red beam
26 Serial number
27 Latch of battery lid
28 Battery lid
Accessories/Spare parts
29 Laser receiver*
30 Construction laser measuring rod*
31 Tripod*
32 Laser viewing glasses*
33 Wall mount/alignment unit*
34 Fastening screw of the wall mount*
35 Screw of the alignment unit*
36 5/8" screw on wall mount*
37 Laser target plate*
38 Ceiling measurement plate*
39 Case
* The accessories illustrated or described are not included as
standard delivery.
Technical Data
Rotational Laser Level GRL 240 HV GRL 250 HV GRL 300 HV GRL 300 HVG
Article number 3 601 K61 C.. 3 601 K61 6.. 3 601 K61 5.. 3 601 K61 7..
Working range (radius)1)
– without laser receiver,
approx.
–withlaserreceiver,approx.
30 m
125 m
30 m
125 m
30 m
150 m
50 m
150 m
Levelling Accuracy1) 2) ±0.2 mm/m ±0.1 mm/m ±0.1 mm/m ±0.1 mm/m
Self-levelling range, typically ±8%(±5°) ±8% (±5°) ±8%(±5°) ±8%(±5°)
Levelling duration, typically 15 s 15 s 15 s 15 s
Rotational speed 150/300/600 min-1 150/300/600 min-1 150/300/600 min-1 150/300/600 min-1
Aperture angle for line
operation 10/25/50° 10/25/50° 10/25/50° 10/25/50°
Operating temperature 0...+50 °C –10...+50 °C –10...+50 °C 0...+40 °C
Storage temperature –20...+70 °C –20...+70 °C –20...+70 °C –20...+70 °C
Relative air humidity, max. 90 % 90 % 90 % 90 %
Laser class 223R 3R
Laser type 635 nm, <1 mW 635 nm, <1 mW 635 nm, <5 mW 532 nm, <5 mW
Laser beam Ø at the exit
opening, approx.1) 5mm 5mm 5mm 5mm
Tripod mount (horizontal) 5/8"-11 5/8"-11 5/8"-11 5/8"-11
Batteries (alkali-manganese) 2 x 1.5 V LR20 (D) 2 x 1.5 V LR20 (D) 2 x 1.5 V LR20 (D) 2 x 1.5 V LR20 (D)
Operating time, approx. 50 h 50 h 50 h 30 h
Weight according to
EPTA-Procedure 01:2014 1.8 kg 1.8 kg 1.8 kg 1.8 kg
Dimensions
(length x width x height) 190 x 180 x 170 mm 190 x 180 x 170 mm 190 x 180 x 170 mm 190 x 180 x 170 mm
Degree of protection IP 54 (dust and splash
water protected)
IP 54 (dust and splash
water protected)
IP 54 (dust and splash
water protected)
IP 54 (dust and splash
water protected)
1) at 20 °C
2) alongside the axes
For clear identification of your rotational laser level, see the serial number 16 on the type plate.
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Bosch Power Tools 1 609 92A 28U | (3.2.16)
Assembly
Power Supply of the Rotational Laser Level
Alkali-manganese batteries are recommended for the meas-
uring tool.
To open the battery compartment 13, turn the locking knob
14 to position and pull out the battery compartment.
When inserting batteries, pay attention to the correct polarity
according to the representation on the inside of the battery
compartment.
Always replace all batteries at the same time. Only use
batteries from one brand and with the identical capacity.
Shut the battery compartment 13 and turn the locking knob
14 to the position.
In case the batteries have been inserted incorrectly, the
measuring tool cannot be switched on. Insert the batteries
with correct polarity.
Remove the batteries from the measuring tool when
not using it for extended periods. When storing for
extended periods, the batteries can corrode and self-
discharge.
Charge-control Indicator
When the charge-control indicator 12 flashes red for the first
time, the measuring tool can still be operated for approx. 2 h.
When the charge-control indicator 12 lights up red continu-
ously, measurements are no longer possible. The measuring
tool switches off automatically after 1 minute.
Power Supply of the Remote Control
Using alkali-manganese batteries is recommended for opera-
tion of the remote control.
To open the battery lid 28, press the latch 27 in the direction
of the arrow and remove the battery lid. Insert the battery pro-
vided. When inserting, pay attention to the correct polarity
according to the representation on the inside of the battery
compartment.
Remove the battery from the remote control when not
using it for longer periods. When storing for longer peri-
ods, the battery can corrode and discharge itself.
Operation
Starting Operation of the Rotational Laser Level
Protect the measuring tool against moisture and direct
sun light.
Do not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for a long time. In case of large vari-
ations 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 tempera-
ture, the accuracy of the measuring tool can be impaired.
Avoid heavy impact to or dropping down of the measur-
ing tool. After severe exterior effects to the measuring
tool, it is recommended to carry out an accuracy check
(see “Levelling Accuracy of the Rotational Laser Level”,
page 13) each time before continuing to work.
Switch the measuring tool off before transporting it.
This will save energy and prevent laser beams from being
emitted accidentally.
Setting Up the Measuring Tool
Set up the measuring tool on a sturdy surface in the horizontal
or vertical position; mount it on a tripod 31 or to the wall
mount with alignment unit 33.
Due to the high levelling accuracy, the measuring tool reacts
sensitively to ground vibrations and position changes. There-
fore, pay attention that the position of the measuring tool is
stable in order to avoid operational interruptions due to re-
levelling.
Switching On and Off
Do not direct the laser beam at persons or animals (es-
pecially not at their eye level), and do not stare into the
laser beam yourself (not even from a distance). Imme-
diately after switching on, the measuring tool sends out the
vertical plumb beam 9and the variable laser beam 6.
For switching on the measuring tool, press the On/Off button
4. The indicators 1, 3and 12 light up briefly. The measuring
tool immediately starts the automatic levelling. During the
levelling, the levelling indicator 3lights up green andthe laser
flashes in point operation.
The measuring tool is levelled in as soon as levelling indicator
3lights up green continuously and the laser beam is steady.
After the levelling is completed, the measuring tool automati-
cally starts in rotational operation.
With the operating mode buttons 5and 11, the operating
modes can already be specified during levelling in (see “Oper-
ating Modes of the Rotational Laser Level”, page 12). In this
case, the measuring tool starts in the set operating mode
upon completion of levelling in.
Remote Control RC 1
Article number 3 601 K69 9..
Working range3) 30 m
Operating temperature –10 °C...+50 °C
Storage temperature –20 °C...+70 °C
Battery 1 x 1.5 V LR06 (AA)
Weight according to
EPTA-Procedure 01:2014 0.07 kg
3) The working range can be decreased by unfavourable environmental
conditions (e.g. direct sun irradiation).
For clear identification of your remote control, see the serial number 26
on the type plate.
Horizontal position
Vertical position
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12 | English
1 609 92A 28U | (3.2.16) Bosch Power Tools
To switch off the measuring tool, press the On/Off button 4
again.
Do not leave the switched-on measuring tool unattend-
ed and switch the measuring tool off after use. Other
persons could be blinded by the laser beam.
To save the batteries, the measuring tool is automatically
switched off when not within the self-levelling range for more
than 2 h or when the shock warning is actuated for more than
2 h (see “Automatic Levelling of the Rotational Laser Level”,
page 13). Reposition the measuring tool and switch it on
again.
Starting Operation of the Remote Control
Protect the remote control against moisture and direct
sunlight.
Do not subject the remote control to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for longer periods. In case of large
variations in temperature, allow the remote control to
adjust to the ambient temperature before putting it into
operation.
The remote control remains ready for operation as long as a
battery with sufficient voltage is inserted.
Set up the measuring tool in such a manner that the signals of
the remote control can directly reach one of the reception
lenses 7. When the remote control cannot be pointed directly
against a reception lens, the working range is reduced. By
reflecting the signal (e.g. against walls), the working range
can be improved, even for indirect signals.
After pressing a button on the remote control, the illuminated
operation indicator 24 indicates that a signal was sent out.
Switching the measuring tool on/off with the remote control is
not possible.
Operating Modes of the Rotational Laser Level
Overview
All three operating modes are possible with the measuring
tool in horizontal and vertical position.
Rotational Operation
Rotational operation is especially recom-
mended when using the laser receiver.
You can select between different rota-
tional speeds.
Line Operation
In this operation mode, the variable laser
beam moves within a limited aperture
angle. This increases the visibility of the
laser beam in comparison to rotational
operation. You can select between differ-
ent aperture angles.
Point Operation
This operation mode enables the best
visibility of the variable laser beam. As an
example, it is used for easy projecting of
heights or checking building lines.
Rotational Operation (150/300/600 min-1)
Each time after switching on, the measuring tool is in rota-
tional operation mode with average rotational speed.
To switch from line operation to rotational operation, press
the rotational operation button 5or button 19 on the remote
control. Rotational operation starts with average rotational
speed.
To change the rotationalspeed, press the rotational operation
button 5or button 19 again until the requested speed is
reached.
When working with the laser receiver, the highest rotational
speed should be set. When working without laser receiver, re-
duce the rotational speed for improved visibility of the laser
beam and use the laser viewing glasses 32.
Line Operation, Point Operation
(10°/25°/50°, 0°)
To switch to line or point operation, press the line operation
button 11 or button 20 on the remote control. The measuring
tool switches to line operation with the smallest aperture
angle.
To change the aperture angle, press the line operation button
11 or button 20 on the remote control. The aperture angle is
increased in two steps; at the same time, the rotational speed
is increased with each step. When pressing the line operation
button a third time, the measuring tool switches to point op-
eration after brief post-pulsation. Pressing the line operation
button again takes you back to line operation with the small-
est aperture angle.
Note: Due to inertia, it is possible for the laser to slightlymove
beyond the end point of the laser line.
Rotating the Laser Line/Laser Dot or the
Rotational Plane (see figure A)
When the measuring tool is in the horizontal position, the la-
ser line (in line operation) or the laser dot (in point operation)
can be positioned within the rotational plane of the laser.
Rotation is possible by 360°.
For this, manually turn the rotation head 10 to the desired
position or use the remote control: Press button 22 to rotate
in clockwise direction, and button 23on the remote control to
rotate in anticlockwise direction. In rotational operation,
pressing the buttons has no effect.
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Bosch Power Tools 1 609 92A 28U | (3.2.16)
When the measuring tool is in the vertical position, it is pos-
sible to rotate the laser point, laser line or rotational plane
around the vertical axis. Rotating is possible only within the
self-levelling range (5° leftwards or rightwards) and only with
the remote control.
Press button 22 on the remote control to rotate in clockwise
direction, and button 23 on the remote control to rotate in
anticlockwise direction.
Automatic Levelling of the Rotational Laser Level
Overview
After switching on, the measuring tool automatically detects
the horizontal or vertical position. To change between the
horizontal and vertical position, switch the measuring tool off,
reposition it and switch on again.
After switching on, the measuring tool checks the horizontal
and vertical position and automatically levels out any uneven-
ness within the self-levelling range of approx. 8 % (5°).
When the measuring tool is inclined by more than 8 % after
switching on or after a position change, levelling in is no long-
er possible. In this case, the rotor is stopped, the laser flashes
and levelling indicator 3continuously lights up red. Reposi-
tion the measuring tool and wait for it to re-level. Without
repositioning, the laser is automatically switched off after
2 minutes and the measuring tool after 2 hours.
When the measuring tool is levelled in, it continuously checks
the horizontal and vertical position. Automatic re-levelling
takes place after position changes. To avoid faulty measure-
ments, the rotor stops during the levelling process, the laser
flashes and the levelling indicator 3flashes green.
Shock-warning Function
The measuring tool has a shock-warning function; after posi-
tion changes or shock to the measuring tool, or in case of
ground vibrations, it keeps the measuring tool from levelling
in at changed heights, and thus prevents vertical errors.
To switch on the shock-warning function, press the shock-
warning button 2. The shock-warning indicator 1continuous-
ly lights up green, and the shock-warning function is activated
after 30 seconds.
When the levelling-accuracy range is exceeded after a posi-
tion change of the measuring tool or when heavy ground
vibrations are detected, the shock-warning function is actuat-
ed: The rotation is stopped, the laser flashes, the levelling in-
dicator 3goes out and the shock-warning indicator 1flashes
red. The current operating mode is stored.
After the shock warning has actuated, press the shock-
warning button 2on the measuring tool or the shock-warning
reset button 21 on the remote control. The shock-warning
function is restarted and the measuring tool starts the level-
ling. As soon as the measuring tool is levelled in (levelling indi-
cator 3continuously lights up green), it starts in the stored
operating mode. Now, check the height of the laser beam with
a reference point and correct the height, if required.
When, after the shock-warning function has actuated, the
function is not restarted by pressing button 2on the measur-
ing tool or the shock-warning reset button 21 on the remote
control, the laser is automatically switched off after 2 minutes
and the measuring tool after 2 hours.
To switch off the shock-warning function, press shock-
warning button 2once, or, when the shock warning is actuat-
ed (shock-warning indicator 1flashing red) press it twice.
When the shock-warning function is shut off, the shock-
warning indicator 1goes out.
The shock-warning function cannot be switched on or off with
the remote control; it can only be restarted after having
actuated.
Levelling Accuracy of the Rotational Laser Level
Influences on Accuracy
The ambient temperature has the greatest influence. Espe-
cially temperature differences occurring from the ground
upward can divert the laser beam.
The deviations play a role in excess of approx. 20 m measur-
ing distance and can easily reach two to four times the
deviation at 100 m.
Because the largest difference in temperature layers is close
to the ground, the measuring tool should always be mounted
on a tripod when measuring distances exceeding 20 m. If
possible, also set up the measuring tool in the centre of the
work area.
Accuracy Check of the Measuring Tool
In addition to external influences, device-specific influences
(e.g. falls or heavy impacts) can also lead to deviations. For
this reason, check the calibration each time before beginning
work.
For the accuracy check, an unobstructed measuring distance
of 20 m on firm ground between two walls A and B is required.
With the measuring tool in the horizontal position, a transit
measurement is to be carried out across both axes X and Y
(both positive and negative) (altogether 4 complete measure-
ments).
– Mount the measuring tool in the horizontal position onto a
tripod 31(accessory) or place it on a firm and level surface
near wall A. Switch the measuring tool on.
– After levelling, direct the laser beam in point operation
onto the close wall A. Mark the centre point of the laser
beam on the wall (point I).
AB
20 m
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14 | English
1 609 92A 28U | (3.2.16) Bosch Power Tools
– Turn the measuring tool around by 180°, allow it to level in
and mark the centre point of the laser beam on the oppo-
site wall B (point II).
– Without turning the measuring tool, position it close to wall
B. Switch the measuring tool on and allow it to level in.
– Align the height of the measuring tool (using the tripod or
by underlaying, if required) in such a manner that the
centre point of the laser beam is projected exactly against
the previously marked point II on wall B.
– Rotate the measuring tool by 180° without changing the
height. Allow it to level in and mark the centre 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 dof both marked points Iand III on wall A
amounts to the actual deviation of the measuring tool for the
measured axis.
Repeat the measuring procedure for the other three axes. For
this, turn the measuring tool prior to each measuring proce-
dure by 90°.
–GRL 240 HV:
The maximum permitted deviation over the measuring
section of 2 x 20 m = 40 m is as follows:
40mx±0.2mm/m=±8mm.
The difference dbetween points Iand III must therefore
be maximum 16 mm in each of the four measuring proce-
dures.
–GRL 250 HV/GRL 300 HV/GRL 300 HVG:
The maximum permitted deviation over the measuring
section of 2 x 20 m = 40 m is as follows:
40mx±0.1mm/m=±4mm.
The difference dbetween points Iand III must therefore
be maximum 8 mm in each of the four measuring proce-
dures.
If the measuring tool should exceed the maximum deviation in
any one of the four measuring procedures, have it checked at
a Bosch after-sales service agent.
Working Advice
Always use the centre of the laser point for marking.
The size of the laser point changes with the distance.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out ambient light. This en-
hances the laser visibility for the eye.
Do not use the laser viewing glasses as safety goggles.
The laser viewing glasses are used for improved visualisa-
tion of the laser beam, but they do not protect against laser
radiation.
Do not use the laser viewing glasses as sun glasses or in
traffic. The laser viewing glasses do not afford complete
UV protection and reduce colour perception.
Working with the Laser Receiver (Accessory)
Under unfavourable light conditions (bright environment, di-
rect sunlight) and for larger distances, use the laser receiver
for improved finding of the laser beam 29.
When working with the laser receiver, select rotational opera-
tion with the highest rotational speed.
Before working with the laser receiver, read and observe the
laser receiver operating instructions.
Working with the Remote Control (Accessory)
While pressing the operator buttons, the measuring tool can
be brought out of alignment so that the rotation is briefly
stopped. This effect is avoided when using the remote
control.
Reception lenses 7for the remote control are located on three
sides of the measuring tool, among other locations above the
control panel on the front side.
Working with the Tripod (Accessory)
The measuring tool is equipped with a 5/8" tripod mount for
horizontal operation on a tripod. Place the measuring tool via
the tripod mount 15 onto the 5/8" male thread of the tripod
and screw the locking screw of the tripod tight.
On a tripod 31 with a measuring scale on the elevator column,
the height difference can be adjusted directly.
AB
180°
AB
AB
180°
OBJ_BUCH-1492-004.book Page 14 Wednesday, February 3, 2016 11:29 AM

English | 15
Bosch Power Tools 1 609 92A 28U | (3.2.16)
Working with Wall Mount/Alignment Unit (Accessory)
(see figure B)
You can also mount the measuring tool to the wall mount with
alignment unit 33. For this, screw the 5/8" screw 36 of the
wall mount into the tripod mount 15 of the measuring tool.
Mounting to a wall: Mounting to a wall is recommended, e.g.,
for work above the elevation height of tripods or for work on
unstable surfaces and without tripod. For this, fasten the wall
mount 33, with the measuring tool mounted, as vertical as
possible to a wall.
For mounting to the wall, you can either fasten the wall mount
33 with fastening screw 34 to a lath (width maximal 8 mm) or
hang it up with two hooks.
Mounting on a tripod: The wall mount 33 can also be screwed
onto a tripod with the tripod mount on the back side. This
method of fastening is especially recommended for work
where the rotational plane is to be aligned with a reference
line.
With the alignment unit, the mounted measuring tool can be
moved vertically (when mounted to the wall) or horizontally
(when mounted to a tripod) within a range of approx. 16 cm.
For this, loosen screw 35 on the alignment unit, move the
measuring tool to the desired position, and retighten screw
35 again.
Working with the Ceiling Measurement Plate
(see figure B)
As an example, the ceiling measurement plate 38 can be used
for easy height adjustment of drop ceilings. Fasten the ceiling
measurement plate with the magnetic holder, e.g., to a beam.
The reflecting half of the ceiling measurement plate improves
the visibility of the laser beam in unfavourable conditions; the
laser beam can also be seen from the rear side through the
transparent half.
Working with the Laser Target Plate (Accessory)
(see figure C)
With the laser target plate 37, the laser mark can be projected
on the ground/floor or against a wall. With the magnetic
holder, the laser target plate can also be fastened to ceiling
constructions.
With the zero field and the scale, the offset or drop to the
required height can be measured and projected at another
location. This eliminates the necessity of precisely adjusting
the measuring tool to the height to be projected.
The laser target plate 37 has a reflecting coating which im-
proves the visibility of the laser beam from a larger distance or
in case of strong sun rays. The luminosity can be recognized
only if you look to the laser target plate in parallel to the laser
beam.
Working with the Measuring Rod (Accessory)
(see figure J)
For checking irregularities or projecting gradients, it is recom-
mended to use the measuring rod 30 together with the laser
receiver.
A relative millimetre scale (±50 cm) is marked on the top of
the measuring rod 30. Its zero height can be preset at the
bottom of the elevator column. This allows for direct reading
of deviations from the specified height.
Work Examples
Projecting/Checking Heights (see figure C)
Position the measuring tool in the horizontal position onto a
firm support or mount it onto a tripod 31 (accessory).
Working with tripod: Align the laser beam to the requested
height. Project or check the height at the target location.
Working without tripod: Determine the height difference be-
tween the laser beam and the height at the reference point
with the laser target plate 37. Project or check the measured
height difference at the target location.
Parallel Alignment of a Plumb Beam/Projecting Right
Angles (see figure D)
When right angles are to be projected or when partitions are
to be aligned, the plumb beam 9must be aligned parallel,
meaning at the same distance to a reference line (e.g. a wall).
For this, set up the measuring tool in the vertical position and
position it in such a manner that the plumb beam runs approx-
imately parallel to the reference line.
For exact positioning, measure the clearance between plumb
beam and reference line directly on the measuring tool with
help of the laser target plate 37. Measure the clearance be-
tween plumb beam and reference line again as far away as
possible from the measuring tool. Align the plumb beam in
such a manner that it has the same clearance to the reference
line as when measured directly at the measuring tool.
The right angle to the plumb beam 9is indicated by the
variable laser beam 6.
Indicating a Plumb Line/Vertical Plane (see figure E)
To indicate a plumb line or a vertical plane, set up the measur-
ing tool in the vertical position. When the vertical plane is sup-
posed to run at a right angle to a reference line (e.g. a wall),
then align the plumb beam 9with this reference line.
The plumb line is indicated by the variable laser beam 6.
OBJ_BUCH-1492-004.book Page 15 Wednesday, February 3, 2016 11:29 AM

16 | English
1 609 92A 28U | (3.2.16) Bosch Power Tools
Turning the Rotational Plane when in the Vertical Position
(see figure F)
To align the vertical laser line or the rotational plane against a
reference point on a wall, set up the measuring tool in the ver-
tical position, and roughly align the laser line or the rotational
plane with the reference point. For precise alignment with the
reference point, press button 22 (clockwise rotation) or
button 23 on the remote control (anticlockwise rotation).
Working without Laser Receiver (see figure G)
Under favourable light conditions (dark environment) and for
short distances, it is possible to work without the laser re-
ceiver. For better visibility of the laser beam, either select line
operation, or select point operation and manually rotate the
rotation head 10 to the target location.
Working with the Laser Receiver (see figure H)
Under unfavourable light conditions (bright environment, di-
rect sunlight) and for larger distances, use the laser receiver
for improved finding of the laser beam. When working with
the laser receiver, select rotational operation with the highest
rotational speed.
Measuring Over Long Distances (see figure I)
When measuring over long distances, the laser receiver must
be used to find the laser beam. In order to reduce inter-
ferences, the measuring tool should always be set up in the
centre of the work surface and on a tripod.
Working Outdoors (see figure J)
The laser receiver should always be used when working out-
doors.
When working on unstable ground, mount the measuring tool
onto the tripod 31. Activate the shock-warning function in or-
der to avoid faulty measurements in case of ground vibrations
or shock to the measuring tool.
Overview of Indications
Maintenance and Service
Maintenance and Cleaning
Keep the rotational laser level and remote control clean at all
times.
Do not immerse the rotational laser level and remote control
into water or other fluids.
Wipe off debris using a moist and soft cloth. Do not use any
cleaning agents or solvents.
Particularly clean the surfaces at the outlet opening of the
rotational laser level regularly and pay attention for any lint.
After-sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can
also be found under:
www.bosch-pt.com
Bosch’s application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the product.
Laser beam Rotation of the laser*
green red green red
Switching on the measuring tool (1 s self-check) 
Levelling in or re-levelling 2x/s 2x/s
Measuring tool levelled in/ready for operation 
Self-levelling range exceeded 2x/s 
Shock-warning function activated 
Shock warning actuated 2x/s 2x/s
Battery voltage for ≤2 h operation 2x/s
Battery empty  
* for line and rotational operation
2x/s


Flashing frequency (twice per second)
Continuous operation
Function stopped
OBJ_BUCH-1492-004.book Page 16 Wednesday, February 3, 2016 11:29 AM

English | 17
Bosch Power Tools 1 609 92A 28U | (3.2.16)
People’s Republic of China
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Service Hotline: [phone]
Fax: [phone]
E-Mail: contact.ptcncn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Hong Kong Co. Ltd.
21st Floor, 625 King’s Road
North Point, Hong Kong
Customer Service Hotline: [phone]
Fax: [phone]
E-Mail: infohk.bosch.com
www.bosch-pt.com.hk
Indonesia
PT Robert Bosch
Palma Tower 10th Floor
Jl. RA Kartini II-S Kaveling 6 Sek II
Pondok Pinang, Kebayoran Lama
Jakarta Selatan 12310
Indonesia
Tel.: [phone]
Fax: [phone]
E-Mail: boschpowertoolsid.bosch.com
www.bosch-pt.co.id
Philippines
Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio Global City,
1634 Taguig City, Philippines
Tel.: [phone]
Fax: [phone]
matheus.contieroph.bosch.com
www.bosch-pt.com.ph
Bosch Service Center:
9725-27 Kamagong Street
San Antonio Village
Makati City, Philippines
Tel.: [phone]
Fax: [phone]
E-Mail: rosalie.dagdaganph.bosch.com
Malaysia
Robert Bosch Sdn. Bhd.
No. 8A, Jalan 13/6
G.P.O. Box 10818
46200 Petaling Jaya
Selangor, Malaysia
Tel.: [phone]
Fax: [phone]
E-Mail: cheehoe.onmy.bosch.com
Toll-Free: 1800 880188
www.bosch-pt.com.my
Thailand
Robert Bosch Ltd.
Liberty Square Building
No. 287, 11 Floor
Silom Road, Bangrak
Bangkok 10500
Tel.: [phone]
Fax: [phone]
Robert Bosch Ltd., P. O. Box 2054
Bangkok 10501, Thailand
www.bosch.co.th
Bosch Service – Training Centre
La Salle Tower Ground Floor Unit No.2
10/11 La Salle Moo 16
Srinakharin Road
Bangkaew, Bang Plee
Samutprakarn 10540
Thailand
Tel.: [phone]
Fax: [phone]
Singapore
Powerwell Service Centre Ptd Ltd
65 Ubi Crescent, #06-03 Hola Centre
Singapore 408559
Tel.: [phone]
Fax: [phone]
E-Mail: powerwellscgmail.com
Toll-Free: 1800 3338333
www.bosch-pt.com.sg
Vietnam
Robert Bosch Vietnam Co. Ltd
13th Floor , 194 Golden Building
473 Dien Bien Phu Street
Ward 25, Binh Thanh District
84 Ho Chi Minh City
Vietnam
Tel.: [phone]
Fax: [phone]
Hotline: [phone]
E-Mail: tuvankhachhang-ptvn.bosch.com
www.bosch-pt.com.vn
www.baohanhbosch-pt.com.vn
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: [phone]
Fax: [phone]
Inside New Zealand:
Phone: [phone]
Fax: [phone]
Outside AU and NZ:
Phone: [phone]
www.bosch-pt.com.au
www.bosch-pt.co.nz
OBJ_BUCH-1492-004.book Page 17 Wednesday, February 3, 2016 11:29 AM

18 | 日本語
1 609 92A 28U | (3.2.16) Bosch Power Tools
Egypt
Unimar
20 Markaz kadmat
El tagmoa EL Aoul – New Cairo
Tel: [phone] - 95 / + 2 02 224 78072 - 73
Fax:[phone]
E-Mail: adelzakiunimaregypt.com
Ethiopia
Forever plc
Kebele 2,754, BP 4806,
Addis Ababa , Ethiopia
Tel: [phone]
E-Mail: foreverplcethionet.et
Nigeria
C. Woermann Ltd.
P.O. Box 318
6, Badejo Kalesanwo Street
Matori Industrial Estate
Lagos, Nigeria
Tel: [phone]
E-Mail: d.kornemannwoermann-nigeria.com
Republic of South Africa
Customer service
Hotline: [phone]
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: [phone]
Fax: [phone]
E-Mail: bsctoolsicon.co.za
KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: [phone]
Fax: [phone]
E-Mail: bsc.durza.bosch.com
Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: [phone]
Fax: [phone]
E-Mail: bsczsd.co.za
Bosch Headquarters
Midrand, Gauteng
Tel.: [phone]
Fax: [phone]
E-Mail: rbsa-hq.ptsza.bosch.com
Disposal
The rotational laser level, remote control, batteries, accesso-
ries and packaging should be sorted for environmental-
friendly recycling.
Do not dispose of the rotational laser level, remote control
and batteries into household waste!
Subject to change without notice.
日本語
安全上のご注意
ローテーションレーザー
本機を危険なく安全にお使いいただく
ために、すべての指示をよくお読みに
なり、指示に従って正しく使用してく
ださい。本機を指示に従って使用しな
い場合、本機に組み込まれている保護機能が損なわ
れることがあります。本機に貼られている警告ラベ
ルが常に見える状態でお使いください。この取扱説
明書を大切に保管し、ほかの人に貸し出す場合には
一緒に取扱説明書もお渡しください。
ご注意 ﾐ ここに記載された操作・調整機器以外の
機器を使用したり、指定以外の方法でお取り扱い
になったりすると、危険な電磁波を放出する恐れ
があります。
レーザーメガネを保護メガネとして使用しないで
ください。 レーザーメガネはレーザー光の視認を
助けるものであり、レーザー光から目を保護する
ものではありません。
レーザーメガネをサングラスとして使用したり、
道路交通上で着用したりしないでください。 レー
ザーメガネでは紫外線からの完全な保護はおこな
えません。 また、レーザーメガネは色の認識力を
低下させます。
メジャーリングツールの修理は、必ずお買い求め
の販売店、または電動工具サービスセンターにお
申しつけください。専門知識を備えた担当スタッ
フが純正交換部品を使用して作業を行います。 こ
れによりメジャーリングツールの安全性が確実に
保護されます。
爆発の危険性のある環境（可燃性液体、ガスおよ
び粉塵のある場所）ではメジャーリングツールを
使用しないでください。 メジャーリングツールか
ら火花が発生し、粉塵や蒸気に引火する恐れがあ
ります。
ターゲットパネル 37 とレーザーター
ゲット 38 をペースメーカーの付近で
使用しないでください。 ターゲットパ
ネルおよびレーザーターゲットに装備
されている磁気部で磁界が発生し、
ペースメーカーの機能に障害をきたす
恐れがあります。
ターゲットパネル 37 とレーザーターゲット 38
をデータ媒体や磁気に敏感な装置に近付けないで
ください。 ターゲットパネルおよびレーザーター
ゲットの磁気作用により致命的なデータ消失につ
ながる恐れがあります。
OBJ_BUCH-1492-004.book Page 18 Wednesday, February 3, 2016 11:29 AM

日本語 | 19
Bosch Power Tools 1 609 92A 28U | (3.2.16)
GRL 240 HV/GRL 250 HV
メジャーリングツールには警告ラベルが貼られて
います（イラストページ上では 17 で表示されて
います）。
日本語の警告ラベルが貼示されていない場合に
は、初めてご使用になる前に同梱の日本語ラベル
を貼示中のラベル上に貼ってください。
レーザー光を直接、または反射した
レーザー光をのぞいたり、人や動物
に向けたりしないでください。 人に
眩しさを与えたり、事故を引き起こ
したり、目に障害を与えるおそれが
あります。
レーザー光が目に入った場合、目を閉じてすぐに
レーザー光から頭を逸らしてください。
レーザー装置に変更を加えてはなりません。
目の届かない場所でお子様にレーザーメジャーリ
ングツールを使用させないでください。 レーザー
光が他者の目に入ると視力に影響を及ぼす場合が
あります。
GRL 300 HV/GRL 300 HVG
本機には 2 つの警告ラベルが付いています（図の
ページの本体の番号 17 と 18）。
警告ラベルのテキストがお使いになる国の言語で
ない場合には、最初にご使用になる前にお使いに
なる国の言語で書かれた同梱のラベルをその上に
貼り付けてください。
レーザー光を人や動物に向けないで
ください。 レーザー光を覗かないで
ください。 このメジャーリングツー
ルはレーザークラス 3R
（IEC 60825-1 準拠）のレーザー光を
発光します。 レーザー光を直接覗き
込むと、 – たとえ距離が離れている
場合にも – 目を傷める原因となるこ
とがあります。
窓ガラスや鏡などのなめらかな表面にレーザー光
を反射させないでください。 反射レーザー光が目
に害をおよぼすこともあります。
レーザー機器に関する知識のある方のみがメ
ジャーリングツールを使用するようにしてくださ
い。 EN 60825-1 では、レーザーが目や皮膚にお
よぼす生物学的影響および危険防止に配慮した
レーザー保護対策についての知識を主に要求して
います。
IEC 60825-1:2014
<1mW, 635 nm
Laser Radiation Class 2
do not stare into beam
GRL 300 HV/GRL 300 HVG:
LASER
APERTURE
IEC 60825-1:2014
<
5 mW, 532 nm
GRL 300 HVG:
LASER RADIATION
Avoid direct eye exposure
Class 3R laser product
IEC 60825-1:2014
<
5 mW, 635 nm
GRL 300 HV:
LASER RADIATION
Avoid direct eye exposure
Class 3R laser product
OBJ_BUCH-1492-004.book Page 19 Wednesday, February 3, 2016 11:29 AM

20 | 日本語
1 609 92A 28U | (3.2.16) Bosch Power Tools
レーザー光が目に入らないように、メジャーリン
グツールを設置してください。 これにより目の損
傷を回避できます。
メジャーリングツールを使用する場合は、常に現
地の事故防止規則、道路安全規則に従って、 危険
な状況を作らないようにしてください。
メジャーリングツールは、誤って使用されないよ
うに、 子供など製品知識を持たない者の手に触れ
ることのないように保管してください。
レーザークラス 3R のメジャーリングツールをご使
用になる場合には、各国で定められた規制にもご
注意ください。 これらの規制を守らなかった場
合、負傷事故が発生する恐れがあります。
メジャーリングツールを使用する場合は、必ず十
分な測定スペースを確保してください。 製品知識
を持たない者を近づけないようにすることで無関
係者に対しての危険を防ぐことができます。
リモコン
すべての指示をよくお読みになり、指
示に従って正しく使用してください。
本機を指示に従って使用しない場合、
本機に組み込まれている保護機能が損
なわれることがあります。この取扱説
明書を大切に保管してください。
リモコンの修理は、必ず認定サービスセンターに
お申し付けください。また、必ずボッシュ純正部
品を使用してください。 これによりリモコンの機
能性が確実に維持されます。
爆発の危険性のある環境（可燃性液体、ガスおよ
び粉塵のある場所）ではリモコンを使用しないで
ください。 リモコン内で火花が発生し、粉塵や蒸
気に引火する恐れがあります。
製品および性能について
用途
ローテーションレーザー
本メジャーリングツールは正確な水平出し、垂直
度、建築線、垂点の測量および確認に適していま
す。
このメジャーリングツールは、屋内および屋外での
使用に適しています。
リモコン
本リモコンはローテーションレーザーの屋内・屋外
使用に適しています。
構成図の内容
以下の番号はイラストページのローテーションレー
ザーおよびリモートコントローラーの構成図に一致
しています。
ローテーションレーザー
1ショック警告表示
2ショック警告スイッチ
3オートレベリング表示
4ローテーションレーザーの電源スイッチ
5ローテーションモードおよびレーザー回転速度
選択用ボタン
6可変レーザー光
7リモコン用受信レンズ
8レーザー発光口
9垂直レーザー光
10 ローテーションヘッド
11 ラインモードおよびライン長さ選択用ボタン
12 充電容量表示
13 電池収納部
14 電池収納部のロック
15 三脚取付部 5/8"
16 ローテーションレーザーのシリアルナンバー
17 レーザー警告ラベル
18 警告ラベル レーザー発光口
(GRL 300 HV/GRL 300 HVG)
リモコン*
19 リモコン上のローテーションモードおよびレー
ザー回転速度選択用ボタン
20 リモコン上のラインモードおよびライン長さ選
択用ボタン
21 衝撃警告機能リセットボタン
22 ボタン｢右回転｣
23 ボタン｢左回転｣
24 電源ランプ
25 レーザー発光口
26 シリアルナンバー
27 電池収納カバーロック
28 電池収納カバー
アクセサリー / スペアパーツ
29 レーザー受光器*
30 アルミ標尺 *
31 三脚 *
32 レーザーメガネ*
33 レーザー取付治具 / 調整治具 *
34 レーザー取付冶具用固定ネジ*
OBJ_BUCH-1492-004.book Page 20 Wednesday, February 3, 2016 11:29 AM