Bosch GRL 350 HV / RC 4 Professional Instruction Manual

GRL 350 HV / RC 4 Professional

Robert Bosch Power Tools GmbH 70538 Stuttgart GERMANY www.bosch-pt.com
1 609 92A 69Y (2021.04) T / 101
1 609 92A 69Y

GRL 350 HV | RC 4 Professional
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English …………………………………………… Page 8 ……………………………………….. 19 ………………………………………………. 31 ………………………………………….. 41 ……………………………………….. 51 ……………………………………………… 62 Bahasa Indonesia………………………………. Halaman 76 Ting Vit ……………………………………….. Trang 88

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Bosch Power Tools

(11) (10)
(9) (8) (7) (6) (5) (4) (3)
(2) (1)

(18)

(19)

(20)

(20) LASER APERTURE ABERTURA DEL LASER OVERTURE DE LASER
LASER RADIATION AVOID DIRECT EYE EXPOSURE
CLASS 3R LASER PRODUCT IEC 60825-1:2014 <5 mW, 630-650 nm
Bosch Power Tools

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| 3
(9) (10) (12) (13) (14) (15) (16)
(17)
GRL 350 HV
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4 |
(26) (25) (24) (23) (22) (21)
RC 4

(27) (28) (29)
(34) (30) (31) (35) (32) (33)
(36)
(37)

(38) (39)

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A C E

| 5

(40)

(43)
D

(41) (42)

2 1
3

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6 |

100 m

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Bosch Power Tools

(44)

(37)
LR 30
3 601 K69 240

(45)
RB 30
2 610 A14 830

| 7
(44) (46)
1 608 M00 05B
(47)
2 610 A01 267

(39) BT 300 HD
0 601 091 400

(38) GR 240
0 601 094 100

(42)
WM 24
3 601 K92 510

(48)
1 605 438 1F1

Bosch Power Tools

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8 | English
English
Safety Instructions for Rotary Lasers and Remote Control
All instructions must be read and observed in order to enable work to be carried out safely. The integrated safeguards may be compromised if these instructions are not observed. Never make warning signs unrecognisable. STORE THESE INSTRUCTIONS IN A SAFE PLACE AND INCLUDE THEM WITH THE PRODUCT WHEN GIVING IT TO A THIRD PARTY.
u The measuring tool is delivered with a laser warning sign (marked in the illustration of the measuring tool on the graphics page).
u If the text of the laser warning label is not in your national language, stick the provided warning label in your national language over it before operating for the first time.
u The laser exit holes on the measuring tool are marked with warning labels. Take note of their position when using the measuring tool.
u If the text of these labels is not in your national language, stick the provided warning label in your national language over it before operating for the first time.
u Warning! If operating or adjustment devices other than those specified here are used or other procedures are carried out, this can lead to dangerous exposure to radiation.
u Do not make any modifications to the laser equipment. The setting options described in these operating instructions can be used safely.
Do not direct the laser beam at persons or animals and do not stare into the laser beam yourself. This measuring tool generates laser class 3R laser radiation according to EN 608251. Looking into the laser beam directly can cause eye injuries even from far away. u Do not use the laser goggles (accessory) as protective goggles. The laser goggles make the laser beam easier to see; they do not protect you against laser radiation.
u Do not use the laser goggles (accessory) as sunglasses or while driving. The laser goggles do not provide full UV protection and impair your ability to see colours.
u Have your product serviced only by a qualified specialist using only original replacement parts. This will ensure that the safety of the product is maintained.
u Do not let children use the laser measuring tool unsupervised. They could unintentionally blind themselves or other persons.

u Avoid laser beam reflections on smooth surfaces such as windows or mirrors. Even the reflected laser beam can cause eye injuries.
u The measuring tool should only be operated by people who have experience in using laser tools. According to EN 60825-1, this includes knowledge of the biological impact of the laser on eyes and skin as well as the correct application of laser safety guidelines to prevent hazards.
u Do not operate in potentially explosive atmospheres, such as in the presence of flammable liquids, gases or dusts. Sparks may be produced, which can ignite dust or fumes.
u Always position the measuring tool such that the laser beams travel far above or below eye level. This ensures that no eye injuries are caused.
u Mark out the area where the measuring tool is being used with suitable laser warning signs. This will prevent people who are not using the measuring tool from entering the danger zone.
u Do not store the measuring tool in places which can be accessed by unauthorised individuals. People who are unfamiliar with the operation of the measuring tool may cause harm to themselves or others.
u Comply with any applicable national regulations when using a laser from laser class 3R. Failure to comply with these regulations may cause injuries.
u Ensure that the laser radiation area is guarded or screened. Restricting the laser radiation to controlled areas prevents eye injuries being caused to people who are not using the laser measuring tool.
u Never leave the measuring tool unattended when switched on, and ensure the measuring tool is switched off after use. Others may be dazzled by the laser beam.
u Do not use any optical instruments such as binoculars or magnifying glasses to view the radiation source. Doing so can damage your eyes.
Keep the magnetic accessories away from implants and other medical devices, e.g. pacemakers or insulin pumps. The magnets in the accessories generate a field that can impair the function of implants and medical devices.
u Keep the magnetic accessories away from magnetic data storage media and magnetically-sensitive devices. The effect of the magnets in the accessories can lead to irreversible data loss.
Product Description and Specifications
Please observe the illustrations at the beginning of this operating manual.

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Intended Use
Rotary laser The measuring tool is intended for establishing and checking exactly horizontal height profiles, vertical lines, alignments and plumb points. The measuring tool is suitable for indoor and outdoor use.
Remote control The remote control is intended for controlling the Bosch rotary lasers via infrared. The remote control is suitable for indoor and outdoor use.
Product Features
The numbering of the product features refers to the illustration of the measuring tool and remote control on the graphics pages.
Rotary Laser (1) Battery compartment locking mechanisma) (2) Battery compartmenta) (3) On/off button (4) Rotational operation button (5) Slope button down (6) Y-axis status indicator (7) X-axis status indicator (8) Variable laser beam (9) Sensor for remote control
(10) Laser beam outlet aperture (11) Upwards plumb point (12) Battery warning (13) Shock-warning function indicator (14) Manual operation button (15) Slope button up (16) Line operation button (17) 5/8″ tripod mount (18) Serial number (19) Laser warning label (20) Label laser aperture 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.
Remote control (21) Remote controla) (22) Slope button X (23) Button for anticlockwise rotation (24) Slope button Y+ (25) Slope button X+ (26) Rotational operation button (27) Infrared beam outlet aperture (28) Signal transmission indicator

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(29) Sleep mode button (standby)
(30) Line operation button
(31) Manual operation button
(32) Slope button Y
(33) Button for clockwise rotation
(34) Serial number
(35) Battery compartment cover locking mechanism
(36) Battery compartment cover 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.
Accessories/replacement parts (37) Laser receivera) (38) Measuring roda) (39) Tripoda) (40) Fastening screw for wall mounta) (41) Alignment unit bolta) (42) Wall mount/alignment unita) (43) 5/8″ screw for wall mounta) (44) Magneta) (45) Laser receiver holdera) (46) Laser viewing glassesa) (47) Laser target platea) (48) Casea)
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

Rotary laser

GRL 350 HV

Article number

3 601 K61 S..

Working range (diameter)A)B)

without laser receiver,

60 m

approx.

with laser receiver, approx.

2350 m

Levelling accuracy at 30 m distanceA)C)

horizontal

±1.5 mm

vertical

±3 mm

Typical self-levelling range

±8 % (±4.6°)

Typical levelling time

30 s

Rotational speed

0/150/300/600 min-1

Aperture angle for line operation

10/25/50°

Slope range for manual opera-

±8 %

tion

Operating temperature

-10 °C to +50 °C

Storage temperature

-20 °C to +70 °C

Max. altitude

2000 m

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Rotary laser

GRL 350 HV

Relative air humidity max.

90 %

Pollution degree according to

2D)

IEC 61010-1

Laser class

Laser type

630650 nm, < 5 mW

Divergence

0.4 mrad (full angle)

Tripod mount, horizontal

5/8″-11

Non-rechargeable batteries (alkaline manganese)

2 × 1.5 V LR20 (D)

Approx. operating time

30 h

Weight according to EPTAProcedure 01:2014

1.8 kg

Dimensions (length × width × height)

187 × 182 × 170 mm

Protection rating (excluding bat- IP56 (protection against

tery compartment)

dust ingress and water

jets)

A) At 20 °C
B) The working range may be reduced by unfavourable environmental conditions (e.g. direct sunlight).
C) Along the axes
D) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
The serial number (18) on the type plate is used to clearly identify your measuring tool.

Remote control

RC 4

Article number Working rangeA)

3 601 K69 S.. 30 m

Operating temperature

10 °C to +50 °C

Storage temperature

20 °C to +70 °C

Max. altitude

2000 m

Relative air humidity max.

90 %

Pollution degree according to

2B)

IEC 61010-1

Non-rechargeable batteries (alkaline manganese)

2 × 1.5 V LR6 (AA)

Weight according to EPTAProcedure 01:2014

0.11 kg

A) The working range may be reduced by unfavourable environmental conditions (e.g. direct sunlight).

B) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
For clear identification of your remote control, see the serial number (34) on the type plate.

Assembly
Remote Control Power Supply
Using alkali-manganese batteries is recommended to operate the remote control.

To open the battery compartment cover (36), press on the locking mechanism (35) and remove the battery compartment cover. Insert the batteries.
When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment.
Always replace all the batteries at the same time. Only use batteries from the same manufacturer and which have the same capacity.
u Remove the batteries from the remote control when not using it for longer periods. The batteries can corrode and self-discharge during prolonged storage in the remote control.
Measuring Tool Power Supply
It is recommended that you use alkaline manganese batteries to operate the measuring tool.
To remove the battery compartment (2), turn the locking
mechanism (1) to position . Pull the battery compartment out of the measuring tool and insert the batteries.
When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment.
Slide the battery compartment (2) into the measuring tool and turn the locking mechanism (1) to position .
If the batteries become weak, the battery warning (12) will light up red. The measuring tool can be operated for approx. two more hours.
If the battery warning (12) flashes red, the measuring tool will automatically switch itself off after five minutes.
Always replace all the batteries at the same time. Only use batteries from the same manufacturer and which have the same capacity.
u Take the batteries out of the measuring tool when you are not using it for a prolonged period of time. The batteries can corrode and self-discharge during prolonged storage in the measuring tool.
Operation
u Protect the measuring tool and remote control against moisture and direct sunlight.
u Do not expose the measuring tool or remote control to any extreme temperatures or variations in temperature. For example, do not leave them in a car for extended periods of time. In case of large variations in temperature, allow the measuring tool and the remote control to adjust to the ambient temperature before putting them into operation. Before continuing work with the measuring tool, always perform an accuracy check (see “Accuracy Check of the Measuring Tool”, page 14). The precision of the measuring tool may be compromised if exposed to extreme temperatures or fluctuations in temperature.
u Avoid substantial knocks to the measuring tool and avoid dropping it. Always carry out an accuracy check

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before continuing work if the measuring tool has been subjected to severe external influences (see “Accuracy Check of the Measuring Tool”, page 14). u Take care if the laser grid is broken by the measuring tool falling over. You may cut yourself on the broken edges of the grid.
Starting Operation of the Remote Control
When pressing the operating controls, it is possible to bring the measuring tool out of its level position, so that the rotation is briefly interrupted. This effect is avoided when using the remote control. The remote control will only work if it is fitted with batteries that are sufficiently charged. Set up the measuring tool in such a manner that the signals of the remote control can directly reach one of the sensors (9). If the remote control cannot be pointed directly at a sensor, the working range will be 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 signal transmission indicator (28) will light up, indicating that a signal has been sent out. It is not possible to switch the measuring tool on/off with the remote control.
Starting Operation of the rotary laser
u Keep the work area free from obstacles that could reflect or obstruct the laser beam. For example, cover any reflective or shiny surfaces. Do not measure through panes of glass or similar materials. The measurements may be distorted by a reflected or obstructed laser beam.
Setting up the measuring tool Horizontal position
Vertical position
Position the measuring tool on a stable surface in the horizontal or vertical position, mount it on the tripod (39) or on the wall mount (42) with the alignment unit. Due to its high levelling accuracy, the measuring tool is very sensitive to knocks and vibrations and changes in position. Take care, therefore, that the measuring tool is stable to avoid interruptions to the operation caused by relevelling.
Switching On and Off Note: After the first time the tool is started up and before beginning work, you should always perform an accuracy check (see “Accuracy Check of the Measuring Tool”, page 14). To switch on the measuring tool, press the on/off button (3). All indicators will quickly flash red (3×/s). The

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measuring tool emits the variable laser beam (8) and the upwards plumb point (11) from the outlet apertures (10). u Do not direct the laser beam at persons or animals and
do not stare into the laser beam yourself (even from a distance). The measuring tool immediately starts automatic levelling. During levelling, the X-axis (7) and Y-axis (6) status indicators flash green and the laser flashes in point operation. The measuring tool is levelled as soon as the X-axis (7) and Yaxis (6) status displays light up green continuously and the laser lights up continuously. After levelling is completed, the measuring tool automatically starts in rotational operation. u Never leave the measuring tool unattended when switched on, and ensure the measuring tool is switched off after use. Others may be blinded by the laser beam. To switch off the measuring tool, press the on/off button (3) until all indicators turn off.
Sleep Mode (Standby) During breaks from work, you can set the measuring tool to sleep mode using the remote control (21). This saves all the settings and the shock-warning function remains activated. To switch on sleep mode, press the sleep mode button (29) on the remote control. All indicators on the measuring tool will flash red slowly (1×/s). To switch off sleep mode, press the sleep mode button (29) again. You can also end sleep mode by briefly pressing the on/off button (3) on the measuring tool.
Operating Modes
Path of X and Y axes The path of the X and Y axes is marked on the housing above the rotation head.
Operating Modes Overview All three operating modes are possible with the measuring tool in horizontal and vertical position.
Rotational operation Rotational operation is especially recommended when using the laser receiver. It is possible to select between different rotational speeds.
Line operation In this operating mode, the variable laser beam moves within a defined aperture angle. This increases the visibility of the laser beam in comparison to rotational operation. You can select between different aperture angles. Point operation In this operating mode, the best visibility of the variable laser beam can be reached. For example, it is used to easily project heights or to check building lines. Line and point operation are not suitable for use with the laser receiver (37).

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Rotational operation/point operation Each time after switching on, the measuring tool is in rotational operation mode with standard rotational speed (300 min-1). To switch from line operation to rotational or point operation, press the rotational operation button (4) or the rotational operation button (26) on the remote control. To change the rotational speed, press the rotational operation button (4) or rotational operation button (26) on the remote control until the required speed is reached. The rotational speed is gradually increased each time after pressing the button. After the highest speed setting, the measuring tool switches to point operation after brief post-pulsation. Pressing the rotational operation button takes you back to rotational operation with the lowest rotational speed. When working with the laser receiver, the highest rotational speed should be set. When not working with the laser receiver, reduce the rotational speed for improved visibility of the laser beam and use the laser googles (46).
Line mode To switch to line operation, press the line operation button (16) or the line operation button (30) on the remote control. To change the aperture angle, press the line operation button (16) or the line operation button (30) on the remote control until the required operating mode is achieved. The aperture angle is gradually increased each time it is pressed; at the same time, the rotational speed is increased with each setting. Note: Due to inertia, it is possible for the laser to slightly move beyond the end point of the laser line.
Functions
Turning the Line/Point in a Horizontal Position within the Rotational Plane When the measuring tool is in a horizontal position, the laser line or the laser point can be positioned within the rotational plane of the laser. Rotation is possible by 360°. To rotate anticlockwise, press the slope button down (5) on the measuring tool or the button for anticlockwise rotation (23) on the remote control. To rotate clockwise, press the slope button up (15) on the measuring tool or the button for clockwise rotation (33) on the remote control.
Turning the Rotational Plane When In the Vertical Position When the measuring tool is in the vertical position, it is possible to rotate the laser point, laser line or rotational plane around the X-axis for easy sighting out or parallel alignment in a range of ±8 %. To rotate anticlockwise, press the slope button down (5) on the measuring tool or the button for anticlockwise rotation (23) on the remote control.
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To rotate clockwise, press the slope button up (15) on the measuring tool or the button for clockwise rotation (33) on the remote control.
Automatic levelling
Overview After switching on, the measuring tool checks the horizontal and vertical position and automatically levels out any unevenness within the self-levelling range of approx. ±8 % (±4.6°).
During levelling, the X-axis (7) and Y-axis (6) status indicators flash green and the laser flashes in point operation.
The measuring tool is levelled as soon as the X-axis (7) and Yaxis (6) status displays light up green continuously and the laser lights up continuously. After levelling is completed, the measuring tool automatically starts in rotational operation.
When the measuring tool is out-of-level by more than 8 % after switching it on or after a position change, levelling in is no longer possible. If this is the case, the X-axis (7) and Yaxis (6) status indicators will flash red, the rotor will be stopped and the laser will be switched off. Switch the measuring tool off, position it as level (horizontal position) or perpendicular as possible (vertical position) and switch it on again.
Position Changes When the measuring tool is levelled in, it continuously checks the horizontal and vertical position. Re-levelling is automatically performed if there are any position changes.
Minimal position changes are levelled out without interrupting the operation. This automatically compensates subsoil ground vibrations or weather influences.
For larger position changes, the rotation of the laser beam will be stopped and the laser beam will be stopped in order to avoid incorrect measurements during the levelling process. The X-axis (7) and Yaxis (6) status indicators will flash green. The shock-warning function will be actuated, if required.
The measuring tool will automatically detect the horizontal or vertical position. To change between the horizontal and the vertical position, switch the measuring tool off, reposition it and switch it on again.
Shock-warning function The measuring tool has a shock-warning function. After position changes or shock to the measuring tool, or in case of ground vibrations, it keeps the measuring tool from levelling in at changed positions, and thus prevents errors caused by a change in the measuring tool’s position.
Activating the shock warning: The shock-warning function is switched on by default. It is activated approximately one minute after the measuring tool has been switched on.
Shock warning actuated: If the position of the measuring tool is changed or a severe knock is registered, the shock warning will be actuated. The laser will stop rotating and the laser beams will flash. At the same time, the shock-warning indicator (13) and the X-axis (7) and Yaxis (6) status indicators will flash red. The current operating mode is stored.
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When the shock-warning function has actuated, briefly press the on/off button (3). The shock-warning function is restarted and the measuring tool starts the levelling. As soon as the measuring tool is levelled (the Xaxis (7) and Yaxis (6) status indicators will light up continuously), it will start up in the saved operating mode.
Now check the position of the laser beam at a reference point and, if necessary, correct the height or alignment of the measuring tool.
Switching off the shock-warning function: To switch the shock-warning function off or on, briefly press the on/off button (3) once or, when the shock warning has actuated (shock-warning indicator (13) flashes red), twice. When the shock-warning function is switched off, the shock-warning indicator (13) will light up red continuously.
If the shock-warning function has been switched on, it will be activated after approximately one minute.
Note: The shock-warning function cannot be switched on or off or restarted with the remote control.

Inclined operation in a single axis/manual operation
The automatic levelling of the measuring tool can be switched off (manual operation):
in the horizontal position for both axes independently of each other,
in the vertical position for the Xaxis (the Yaxis cannot be levelled in the vertical position).
It is possible to set up the measuring tool at any inclination in manual operation mode. The axes can also be tilted independently of each other in a range of ±8 % on the measuring tool.
Selecting the axis: To start the manual operation or select the axis to be tilted, press the manual operation button (14) on the measuring tool or the manual operation button (31) on the remote control. You can see on the Xaxis (7) or Yaxis (6) status indicators which axis is no longer level and can be tilted.

Press the manual operation button

X-axis status X
Green Red

Y-axis status Y
Green Red

1× (in the horizontal position)

Inclined operation in a single

axis, axis adjustable

Axis levelled

1× (in the vertical position)

Inclined operation in a single

–

axis, axis adjustable

Axis cannot be levelled

2×

Axis levelled

Inclined operation in a single axis,
axis adjustable

3×

Manual operation,

axis adjustable

Manual operation

4×

Manual operation

Manual operation, axis adjustable

5×

(in the horizontal

position)

Axis is levelled in/is level

5×

Axis is levelled in/is level

–

(in the vertical

position)

Indicator lit up continuously

Axis cannot be levelled

Indicator flashing – Indicator gone out

Tilting the axis: The slope of an axis in slope operation or manual operation can be altered within five seconds of selecting the axis (as long as the relevant status indicator of the axis is flashing red). If the status indicator lights up red continuously, the slope has been determined. To alter the slope, press the manual operation button (14) on the measuring tool or the manual operation button (31) on the remote control again until the status indicator of the required axis flashes red.

You can alter the slope of an adjustable axis as follows: On the measuring tool: Press the slope button down (5)
to tilt the adjustable axis in a “” direction. Press the slope button up (15) to tilt the adjustable axis in a “+” direction.
With the remote control: Press the slope button X+ (25) or the slope button X (22) to tilt the Xaxis in a “+” direction or “” direction. Press the slope button Y+ (24) or the slope button Y (32) to tilt the Yaxis in a “+” direction or “” direction.

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Accuracy Check of the Measuring Tool
The following tasks should be performed only by well-trained and qualified persons. The legalities with regard to performing an accuracy check or calibration of a measuring tool must be known. Influences on Accuracy The largest influence is exerted by the ambient temperature. In particular, temperature differences that occur from the ground upwards can refract the laser beam. In order to minimise thermal influences resulting from heat rising from the floor, it is recommended that you use the measuring tool on a tripod. In addition, position the measuring tool in the centre of the work surface, wherever this is possible. In addition to external influences, device-specific influences (e.g. falls or heavy impacts) can also lead to deviations. For this reason, check the levelling accuracy each time before beginning work. If the measuring tool exceeds the maximum deviation for the measuring procedures described below, perform a calibration (see “Calibrating the measuring tool”, page 14) or have the measuring tool checked by a Bosch customer service agent. Checking the levelling accuracy in a horizontal position For a reliable and precise result, it is recommended that you check there is a free measuring distance of 30 m on firm ground in front of a wall. Carry out a complete measuring procedure for each of the two axes. Mount the measuring tool in a horizontal position 30 m
from the wall on a tripod, or place it on a firm, level surface. Switch on the measuring tool.
30 m
Once levelling is complete, mark the centre of the laser beam on the wall (point ).
180°
d
Rotate the measuring tool 180° without changing its position. Allow it to level in and mark the centre point of the
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laser beam on the wall (point ). Note that point should preferably be positioned vertically above or below point . The discrepancy d between the two marked points and on the wall reveals the actual height deviation of the measuring tool for the axis being measured. Repeat the measuring process for the other axis. To do this, turn the measuring tool by 90° before beginning the measurement. The maximum permitted deviation on the 30 m measuring distance is as follows: 30 m × ±0.05 mm/m = ±1.5 mm. The discrepancy d between points and must therefore amount to no more than 3 mm for each of the two measuring processes.
Calibrating the measuring tool
The following tasks should be performed only by well-trained and qualified persons. The legalities with regard to performing an accuracy check or calibration of a measuring tool must be known. u Perform calibration of the measuring tool with ex-
treme precision or have the measuring tool checked by a Bosch customer service agent. Inaccurate calibration leads to incorrect measuring results. u Only start the calibration if you have to perform a calibration of the measuring tool. As soon as the measuring tool is in calibration mode, you must perform the calibration meticulously to the end in order to ensure that no incorrect measuring results are produced afterwards. Check the levelling accuracy after every calibration (see “Accuracy Check of the Measuring Tool”, page 14). If the deviation is outside the maximum permitted limits, have the measuring tool checked by a Bosch customer service agent. Always calibrate all axes (X-axis, Y-axis and Z-axis). Note: If the X-axis (7) or Y-axis (6) status indicator flashes red during calibration, this indicates that the deviation is outside the maximum permitted range. If this is the case, press the manual operation button (14) to exit calibration mode without saving the settings. The X-axis (7) and Yaxis (6) status indicators will ten flash red at 3×/s to indicate calibration errors. Restart the calibration. If the error occurs again, have the measuring tool checked by a Bosch customer service agent.
X-axis and Y-axis Calibration For calibration, you will need a free measuring distance of 30 m on firm ground in front of a wall. If required (e.g. in poor lighting conditions), you can use a laser receiver (37) to mark the laser beam. When using the laser receiver, take care that it is aligned vertically on the wall, as otherwise the marks are offset with respect to the laser beam. With laser receivers with an adjustable reception accuracy, you can set the reception accuracy depending on the required calibration accuracy (see the operating instructions for the laser receiver). Mounting and aligning the measuring tool for calibration: Mount the measuring tool in the horizontal position 30 m
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from the wall on the tripod (39) (recommended) or position it on a firm, level surface.
X1 X2

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180°

30 m
Align the measuring tool so that the X-axis indicator imprinted on the measuring tool is at right angles to the wall. Starting calibration: The measuring tool must be switched off when calibration starts. Press and hold the manual operation button (14) on the measuring tool and then also briefly press the on/off button (3). Release the manual operation button only when the Xaxis status indicator (7) flashes green and the shockwarning function indicator (13) flashes red (both at 2×/s). The measuring tool is switched on in calibration mode for the Xaxis. X-axis calibration: Ensure that the measuring tool is aligned with the Xaxis at right angles to the wall. Wait until the measuring tool is levelled in and rotational operation has started.
X1
Mark the height of the laser beam on the wall as height X1. To do this, you may need to use the laser receiver (37). Turn the measuring tool through 180° without adjusting the height and position of the measuring tool. Wait until the measuring tool is levelled in and rotational operation has started.

Mark the height of the laser beam on the wall as height X2. To do this, you may need to use the laser receiver (37). Note that height X2 should preferably be positioned vertically above or below height X1.
X1
X3
X2
Determine the exact centre point between the marked heights X1 and X2 and mark this on the wall as height X3. Align the variable laser beam (8) using the down (5) and up (15) slope buttons so that it hits height X3 as accurately as possible. To do this, you may need to use the laser receiver (37). Save the calibration of the X-axis by pressing the manual operation button (14). As confirmation, the X-axis status indicator (7) will flash green six times. Y-axis calibration: After calibration of the Xaxis, the measuring tool automatically switches to calibration mode for the Yaxis. The Yaxis status indicator (6) flashes green and the shock-warning function indicator (13) flashes red (both at 2×/s). Turn the measuring tool through 90° so that the Y-axis indicator imprinted on the measuring tool is at right angles to the wall. Then calibrate as described for the Xaxis. If the calibration of the Y-axis has been saved, the Yaxis status indicator (6) will flash green six times. Calibration mode will be ended automatically. Z-axis Calibration A free measuring distance on firm ground in front of a 10 m wall is required for the calibration. Fix a plumb line to the wall.

Bosch Power Tools

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16 | English
Position the measuring tool in a vertical position on a firm, level surface. Switch the measuring tool on and allow it to level in. Align the measuring tool so that the variable laser beam contacts the wall at right angles and cuts through the plumb line. Switch the measuring tool off. To start calibration mode, press and hold the manual operation button (14) and then also briefly press the on/off button (3). Release the manual operation button only when the Xaxis status indicator (7) flashes green and the shockwarning function indicator (13) flashes red (both at 2×/s). The measuring tool is switched on in calibration mode for the Zaxis. Wait until the measuring tool is levelled in and rotational operation has started.
Align the variable laser beam so that it runs as parallel as possible to the plumb line. To do this, press the down (5) or up (15) slope buttons. If it is not possible to align the laser beam in parallel to the plumb line, align the measuring tool to the wall more precisely and start the calibration process again. If the laser beam is aligned in parallel, save the calibration by pressing the manual operation button (14). As confirmation, the X-axis status indicator (7) will flash green six times. The calibration of the Zaxis will be saved and calibration mode automatically ended.
Working Advice
u Only the centre of the laser point or laser line must be used for marking. The size of the laser point/the width of the laser line changes depending on the distance.

10 m

Working with the Laser Target Plate (see figure A) The laser target plate (47) improves visibility of the laser beam in unfavourable conditions and at greater distances.
The reflective surface of the laser target plate (47) improves visibility of the laser line. The transparent surface enables the laser line to be seen from behind the laser target plate.
Working with the Tripod (Accessory) A tripod offers a stable, height-adjustable support surface for measuring. Place the measuring tool with the 5/8″ tripod mount (17) on the thread of the tripod (39). Tighten the measuring tool using the locking screw of the tripod.
On a tripod featuring a measuring scale on its extender, you can set the height deviation straight away.
Roughly align the tripod before switching on the measuring tool.
Working with the WM 24 wall mount (accessory) (see figure B) The measuring tool can be secured to the wall using the wall mount with the alignment unit (42). Using the wall mount is recommended, e.g. when working above the maximum extension height of tripods, or when working on unstable surfaces without a tripod.
Fasten the wall mount (42) with the fastening screws (40) to a suitable strip of wall. Fit the wall mount as perpendicular as possible to the wall and ensure it is mounted so that it is stable.
Screw the 5/8″ screw (43) of the wall mount into the tripod mount (17) of the measuring tool.
The alignment unit can be used to move the mounted measuring tool vertically in a range of approx. 23 cm. To do this, loosen the screw (41) on the alignment unit, slide the measuring tool into the required position and retighten the screw (41).
Working with the Laser Receiver (accessory) Use the laser receiver (37) to improve detection of the laser lines in adverse lighting conditions (bright environment, direct sunlight) and over greater distances.
For rotary lasers with multiple operating modes, select the horizontal or vertical operation with the highest rotational speed.
Before working with the laser receiver, read and observe the laser receiver operating instructions.
Working with the measuring rod (accessory) (see figure C) To check levels or apply slopes, it is recommended to use the measuring rod (38) together with the laser receiver.
A relative measuring scale is incorporated at the top of the measuring rod (38). You can preselect its zero at the bottom on the extender. This enables you to read deviations from the target height straight away.
Laser Goggles (Accessory) The laser goggles filter out ambient light. This makes the light of the laser appear brighter to the eye.

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Bosch Power Tools

English | 17

u Do not use the laser goggles (accessory) as protective goggles. The laser goggles make the laser beam easier to see; they do not protect you against laser radiation.
u Do not use the laser goggles (accessory) as sunglasses or while driving. The laser goggles do not provide full UV protection and impair your ability to see colours.
Example applications
Projecting/checking heights (see figure D) Position the measuring tool in the horizontal position on a firm support or mount it on a tripod (39) (accessory).
Working with a tripod: Set the laser beam at the required height. Project or check the height at the target location.
Working without a tripod: Determine the height difference between the laser beam and the height at the reference point using the laser target plate (47). Project or check the height difference measured at the target location.
Parallel Alignment of Upwards Plumb Point/Projecting Right Angles (see figure E) When right angles are to be projected or partition walls are to be aligned, the upwards plumb point (11) must be aligned in 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 upwards plumb point runs approximately parallel to the reference line.
For the exact positioning, measure the clearance between the upwards plumb point and reference line directly on the measuring tool using the laser target plate (47). Measure the clearance between the upwards plumb point and reference line again as far away as possible from the measuring tool. Align the upwards plumb point 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 upwards plumb point (11) is indicated by the variable laser beam (8).
Indicating a perpendicular/vertical plane (see figure F) To indicate a perpendicular or a vertical plane, set up the measuring tool in the vertical position. When the vertical

plane is supposed to run at a right angle to a reference line (e.g. a wall), align the upwards plumb point (11) with this reference line.
The perpendicular plane is indicated by the variable laser beam (8).
Aligning a Perpendicular/Vertical plane (see figure G) To align the vertical laser line or the rotational plane against a reference point on a wall, set up the measuring tool in the vertical position, and roughly align the laser line or the rotational plane with the reference point. For precise alignment with the reference point, turn the rotational plane around the X-axis (see “Turning the Rotational Plane When In the Vertical Position”, page 12).
Working without the Laser Receiver (see figure H) Under favourable light conditions (dark environment) and for short distances, it is possible to work without the laser receiver. For improved visibility of the laser beam, either select line operation or point operation and rotate the laser beam to the target location.
Working with the Laser Receiver (see figure I) In unfavourable lighting conditions (bright environment, direct sunlight) and for larger distances, use the laser receiver to improve detection of the laser beam (37). When working with the laser receiver, select rotational operation with the highest rotational speed.
Measuring over Long Distances (see figure J) When measuring over long distances, the laser receiver (37) must be used to find the laser beam. In order to reduce interferences, the measuring tool should always be set up in the centre of the work surface and on a tripod.
Working outdoors (see figure C) The laser receiver (37) should always be used when working outdoors.
When working on unstable ground, mount the measuring tool on the tripod (39). Always work with the shock-warning function activated in order to avoid faulty measurements in case of ground movements or shocks to the measuring tool.

Overview of Indications

Switching on the measuring tool (1 s self-check) Sleep mode Levelling Levelling in Re-levelling Self-levelling range exceeded

Laser beam Rotation of

the laser

beamA) Green Red Green Red Red Red

3×/s

3×/s 3×/s 3×/s

1×/s

1×/s 1×/s 1×/s

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18 | English

Laser beam Rotation of

the laser

beamA) Green Red Green Red Red Red

Measuring tool ready for operation, both

axes levelled in

Shock warning

Shock warning actuated

Shock-warning function switched off

Battery voltage

Battery voltage low

Batteries drained

Slope operation/manual operation

Xaxis slope adjustable Yaxis levelled in

Xaxis manual Y-axis levelled in

Xaxis levelled in

Yaxis slope adjustable

Xaxis levelled in Y-axis manual

Xaxis slope adjustable Yaxis manual

Xaxis slope manual Yaxis slope adjustable

Xaxis manual Y-axis manual

Calibration

Xaxis calibration mode (in the horizontal

2×/s

position)

X-axis calibration saved

(6×)

Yaxis calibration mode

2×/s

Y-axis calibration saved

(6×)

Zaxis calibration mode (in the vertical

2×/s

position)

Z-axis calibration saved

(6×)

Error during X-axis or Z-axis calibration

Error during Y-axis calibration

Reset

Restart required; switch the measuring tool off and on again using the on/off button (3).

3×/s

A) For line and rotational operation : Continuous operation

flashing 2×/s: Flashing frequency (e.g. twice per second) : Function stopped

1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

Maintenance and Service
Maintenance and Cleaning
Keep the measuring tool and the remote control clean at all times. Do not immerse the measuring tool and remote control into water or other fluids. Wipe off any dirt using a damp, soft cloth. Do not use any detergents or solvents. In particular, regularly clean the surfaces at the outlet aperture of the laser on the measuring tool and make sure to check for any lint. Only store and transport the measuring tool in the case (48). If the measuring tool needs to be repaired, send it off in the case (48).
After-Sales Service and Application Service
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com The Bosch product use advice team will be happy to help you with any questions about our products and their accessories. In all correspondence and spare parts orders, please always include the 10digit article number given on the nameplate of the product.
Malaysia Robert Bosch Sdn. Bhd.(220975-V) PT/SMY No. 8A, Jalan 13/6 46200 Petaling Jaya Selangor Tel.: (03) 79663194 Toll-Free: 1800 880188 Fax: (03) 79583838 E-Mail: www.bosch-pt.com.my
You can find further service addresses at: www.bosch-pt.com/serviceaddresses
Disposal
Electrical and electronic equipment, batteries, accessories and packaging should be sorted for environmentally friendly recycling.
Do not dispose of electrical and electronic equipment and batteries in the household waste!

| 19

u
u
u
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EN 60825-1 3R
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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

20 |

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

(22) X (23) (24) Y+ (25) X+ (26) (27) (28) (29) (30) (31) (32) Y (33) (34) (35) (36) a)

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| 21

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10/25/50°

±8 %

10 °C+50 °C

20 °C+70 °C

2,000m

IEC 61010-1

2D)

630650nm< 5mW

0.4mrad

5/8″-11

1.5V LR20 × 2

EPTA-Procedure 01:2014

1.8kg

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IP56/

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IEC 61010-1

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EPTA-Procedure 01:2014

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

24 |

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

| 25

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

X1
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| 27
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10 m

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

28 |
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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

| 29

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

HP www.bosch-pt.com 10
150-8360 3-6-7 0120-345-762 9:00 5:30 : http://www.bosch.co.jp
www.bosch-pt.com/serviceaddresses

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| 31
EN 60825-1 3R u u u u u u EN 60825-1 u u u u u 3R u u u u

1 609 92A 69Y | (23.04.2021)

32 |

Bosch

(1) a) (2) a) (3) (4) (5) (6) Y (7) X (8) (9)
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GRL 350 HV

3 601 K61 S..

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2000

90 %

IEC 61010-1

2D)

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

GRL 350 HV

0.4

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EPTAProcedure 01:2014

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IP56

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

| 35

X(7)Y(6)
8 % X(7)Y (6)

X (7)Y(6)

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

36 |

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

X X
X1

| 37
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10 m

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

38 |
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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

| 39

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

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www.bosch-pt.com 10

567 102/1F 310052 (0571)8887 5566 / 5588 (0571)8887 6688 x 5566# / 5588# www.bosch-pt.com.cn
Robert Bosch Power Tools GmbH · 70538 Stuttgart / GERMANY 70538 /
www.bosch-pt.com/serviceaddresses

/
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A) B) C)

(Pb)
X O
X X O X O O

(Hg)
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(Cd)

(Cr+6)

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(PBDE)
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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

(Pb)

(Hg)

A) B) C) D) SJ/T 11364 O: GB/ T 26572 X: GB/T 26572 RoHS

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| 41

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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

42 |

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(29) (30) (31) (32) Y (33) (34) (35) (36) a)

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a)

GRL 350 HV

3 601 K61 S..

A)B)

60 m

2-350 m

30 m A)C)

±1.5 mm

±3 mm

±8 %±4.6°

0/150/300/600

10/25/50°

±8 %

10 °C … +50 °C

20 °C … +70 °C

2000 m

90 %

IEC 61010-1

2D)

1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

GRL 350 HV

630650 nm< 5 mW

0.4 mrad

5/8″-11

–

2 × 1.5 V LR20 (D)

EPTAProcedure 01:2014

1.8 kg

× ×

187 × 182 × 170 mm

IP56

A) 20 °C B)
C)

D)
(18)

RC 4

3 601 K69 S..

30 m

10 °C … +50 °C

20 °C … +70 °C

2000 m

90 %

IEC 61010-1

2B)

–

2 × 1.5 V LR6AA

EPTAProcedure 01:2014

0.11 kg

A)
B)
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Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

44 |

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1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

±8 % X
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| 45

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(3) X (7) Y (6)

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Y Y

–

Bosch Power Tools

1 609 92A 69Y | (23.04.2021)

46 |

X X

Y Y

5 /

–

5 (14) (31)

(5)
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d
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u Bosch
u

1 609 92A 69Y | (23.04.2021)

Bosch Power Tools

( , 46) Bosch
X Y Z
X (7) Y (6) (14) X (7) Y (6) 3 Bosch
X Y
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30 m (39)

| 47
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1 609 92A 69Y | (23.04.2021)

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1 609 92A 69Y | (23.04.2021)

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www.bosch-pt.com 10
90 6 10491 : (02) 7734 2588 : (02) 2516 1176 www.bosch-pt.com.tw
: Robert Bosch Power Tools GmbH · 70538 Stuttgart / GERMANY 70538 /
www.bosch-pt.com/serviceaddresses

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