Bosch GRL 400 H Professional: English

 English | 

15

Bosch Power Tools

1 619 929 J22 | (27.6.11)

Kundendienst und Kundenberatung

Der Kundendienst beantwortet Ihre Fragen zu Reparatur und 

Wartung Ihres Produkts sowie zu Ersatzteilen. Explosions-

zeichnungen und Informationen zu Ersatzteilen finden Sie 

auch unter:

www.bosch-pt.com

Das Bosch-Kundenberater-Team hilft Ihnen gerne bei Fragen 

zu Kauf, Anwendung und Einstellung von Produkten und Zu-

behören.

www.powertool-portal.de

, das Internetportal für Handwer-

ker und Heimwerker.

www.ewbc.de

, der Informations-Pool für Handwerk und Aus-

bildung.

Deutschland

Robert Bosch GmbH

Servicezentrum Elektrowerkzeuge

Zur Luhne 2

37589 Kalefeld – Willershausen

Tel. Kundendienst: +49 (1805) 70 74 10*

Fax: +49 (1805) 70 74 11*

(*Festnetzpreis 14 ct/min, höchstens 42 ct/min aus Mobil-

funknetzen)

E-Mail: Servicezentrum.Elektrowerkzeuge@de.bosch.com

Tel. Kundenberatung: +49 (1803) 33 57 99

(Festnetzpreis 9 ct/min, höchstens 42 ct/min aus Mobilfunk-

netzen)

Fax: +49 (711) 7 58 19 30

E-Mail: kundenberatung.ew@de.bosch.com

Österreich

Tel.: +43 (01) 7 97 22 20 10

Fax: +43 (01) 7 97 22 20 11

E-Mail: service.elektrowerkzeuge@at.bosch.com

Schweiz

Tel.: +41 (044) 8 47 15 11

Fax: +41 (044) 8 47 15 51

Luxemburg

Tel.: +32 (070) 22 55 65

Fax: +32 (070) 22 55 75

E-Mail: outillage.gereedschap@be.bosch.com

Entsorgung

Rotationslaser, Ladegerät, Laserempfänger, Akkus, 

Zubehör und Verpackungen sollen einer umweltge-

rechten Wiederverwertung zugeführt werden.

Werfen Sie Rotationslaser, Ladegerät, Laserempfänger und 

Akkus/Batterien nicht in den Hausmüll!

Nur für EU-Länder:

Gemäß der europäischen Richtlinie 

2002/96/EG müssen nicht mehr ge-

brauchsfähige Elektrogeräte und gemäß 

der europäischen Richtlinie 2006/66/EG 

müssen defekte oder verbrauchte Akkus/ 

Batterien getrennt gesammelt und einer 

umweltgerechten Wiederverwendung zu-

geführt werden.

Nicht mehr gebrauchsfähige Akkus/Batterien können direkt 

abgegeben werden bei:

Deutschland

Recyclingzentrum Elektrowerkzeuge

Osteroder Landstraße 3

37589 Kalefeld

Schweiz

Batrec AG

3752 Wimmis BE

Akkus/Batterien:

Ni-MH:

 Nickel-Metallhydrid

Änderungen vorbehalten.

English

Safety Notes

Rotational Laser Level

Working safely with the measuring tool is 

possible only when the operating and safety 

information are read completely and the in-

structions contained therein are strictly fol-

lowed. Never make warning labels on the 

measuring tool unrecognisable. SAVE 

THESE INSTRUCTIONS.

f

Caution – The use of other operating or adjusting 

equipment or the application of other processing meth-

ods than those mentioned here, can lead to dangerous 

radiation exposure. 

f

The measuring tool is provided with a warning label in 

English (marked with number 14 in the representation 

of the measuring tool on the graphics page).

f

Do not direct the laser beam at persons or animals and 

do not stare into the laser beam yourself. 

This measur-

ing tool produces laser class 2 laser radiation according to 

IEC 60825-1. This can lead to persons being blinded.

f

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.

IEC 60825-1:2007-03 

<1mW, 635 nm

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Bosch Power Tools

f

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.

f

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.

f

Do not allow children to use the laser measuring tool 

without supervision. 

They could unintentionally blind 

other persons or themselves.

f

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.

f

Do not open the battery pack. 

Danger of short-circuiting.

Protect the battery pack against heat, e.g., 

against continuous intense sunlight, fire, water, 

and moisture. 

Danger of explosion.

f

Keep the battery pack not being used away from paper 

clips, coins, keys, nails, screws or other small metal ob-

jects that can make a connection from one terminal to 

another. 

Shorting the battery terminals together may 

cause burns or a fire.

f

Under abusive conditions, liquid may be ejected from 

the battery pack; avoid contact. If contact accidentally 

occurs, flush with water. If liquid contacts eyes, addi-

tionally seek medical help. 

Liquid ejected from the bat-

tery may cause irritations or burns.

f

Charge the battery pack only with the battery charger 

specified in these operating instructions. 

A charger that 

is suitable for one type of battery pack may create a risk of 

fire when used with another battery pack.

f

Use only original Bosch battery packs with the voltage 

listed on the nameplate of your measuring tool. 

When 

using other battery packs, e.g. imitations, reconditioned 

battery packs or other brands, there is danger of injury as 

well as property damage through exploding battery packs.

Keep the laser target plate 37 away from 

cardiac pacemakers. 

The magnets on the 

laser target plate generate a field that can 

impair the function of cardiac pacemakers.

f

Keep the laser target plate 37 away from magnetic data 

medium and magnetically-sensitive equipment. 

The ef-

fect of the magnets on the laser target plate can lead to ir-

reversible data loss.

Battery Charger

Read all safety warnings and all instructions. 

Failure to follow the warnings and instructions 

may result in electric shock, fire and/or serious in-

jury.

Keep the battery charger away from rain or 

moisture. 

Penetration of water in the battery 

charger increases the risk of an electric shock.

f

Do not charge other batteries with the battery charger. 

The battery charger is only suitable for charging the Bosch 

battery/battery pack inserted in the rotational laser level. 

Danger of fire and explosion when charging other batter-

ies/battery packs.

f

Keep the battery charger clean. 

Contamination can lead 

to danger of an electric shock.

f

Before each use, check the battery charger, cable and 

plug. If damage is detected, do not use the battery 

charger. Never open the battery charger yourself. 

Have repairs performed only by a qualified technician 

and only using original spare parts. 

Damaged battery 

chargers, cables and plugs increase the risk of an electric 

shock.

f

Do not operate the battery charger on easily inflamma-

ble surfaces (e. g., paper, textiles, etc.) or surround-

ings. 

The heating of the battery charger during the charg-

ing process can pose a fire hazard.

f

Under abusive conditions, liquid may be ejected from 

the battery pack; avoid contact. If contact accidentally 

occurs, flush with water. If liquid contacts eyes, addi-

tionally seek medical help. 

Liquid ejected from the bat-

tery may cause irritations or burns.

f

Supervise children. 

This will ensure that children do not 

play with the charger.

f

Children or persons that owing to their physical, senso-

ry or mental limitations or to their lack of experience or 

knowledge, are not capable of securely operating the 

charger, may only use this charger under supervision 

or after having been instructed by a responsible per-

son. 

Otherwise, there is danger of operating errors and in-

juries.

f

Products sold in 

GB only

: Your product is fitted with a 

BS 1363/A approved electric plug with internal fuse 

(ASTA approved to BS 1362).

If the plug is not suitable for your socket outlets, it should 

be cut off and an appropriate plug fitted in its place by an 

authorised customer service agent. The replacement plug 

should have the same fuse rating as the original plug.

The severed plug must be disposed of to avoid a possible 

shock hazard and should never be inserted into a mains 

socket elsewhere.

Laser Receiver

Read and observe all instructions. 

SAVE 

THESE INSTRUCTIONS FOR FUTURE REF-

ERENCE.

Keep the measuring tool away from car-

diac pacemakers. 

The magnet plate 

22

generates a field that can impair the func-

tion of cardiac pacemakers.

f

Keep the measuring tool away from magnetic data me-

dium and magnetically-sensitive equipment. 

The effect 

of the magnet plate 

22

 can lead to irreversible data loss.

f

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.

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Bosch Power Tools

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f

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.

Product Description and  Specifications

Intended Use

Rotational Laser Level

The measuring tool is intended for determining and checking 

precise horizontal partitions. The measuring tool is not in-

tended for vertical leveling.

The measuring tool is suitable for outdoor use.

Laser Receiver

The measuring tool is intended for swift finding of rotating la-

ser beams in the wavelength listed in the “Technical Data”.

The measuring tool is suitable for indoor and outdoor use.

Product Features

The numbering of the product features refers to the illustra-

tion of the rotational laser level, battery charger and laser re-

ceiver on the graphics page.

Rotational laser level/Battery charger

1

Automatic levelling indicator

2

On/Off button / shock-warning button

3

Shock-warning indicator

4

Variable laser beam

5

Exit opening for laser beam

6

Charge-control indicator

7

Battery pack

8

Battery compartment

9

Locking knob of the battery compartment

10

Locking knob of the battery pack

11

Socket for charge connector

12

Tripod mount 5/8"

13

Serial number of the rotational laser level

14

Laser warning label

15

Battery charger

16

Mains plug of the battery charger

17

Charge connector

Laser receiver*

18

Latch of battery lid

19

On/Off button of laser receiver

20

Button for adjustment of the measuring accuracy

21

Audio signal button

22

Magnet plate

23

Centre mark

24

Reception area for the laser beam

25

Display

26

Laser receiver spirit level

27

Serial number of laser receiver

28

Battery lid

29

Retainer openings for holder

32

Locking screw for holder

33

Holder upper edge

34

Fastening screw of holder

35

Holder

Indicator elements of laser receiver

a

“Medium” adjustment indicator

b

Battery low indicator

c

Direction indicator, up

d

Audio signal indicator

e

Centre indicator

f

“Fine” adjustment indicator

g

Direction indicator, down

Accessories/Spare parts

30

Tripod*

31

Construction laser measuring rod*

36

Laser viewing glasses*

37

Laser target plate*

38

Case

* The accessories illustrated or described are not included as 

standard delivery.

Technical Data

Rotational Laser Level

GRL 400 H

Professional

Article number

3 601 K61 800

Working range (radius)

1)

– without laser receiver, ap-

prox.

– with laser receiver, approx.

10 m

200 m

Levelling Accuracy

1) 2)

±

0.08 mm/m

Self-levelling range, typically

±

8 %  (

±

5°)

Levelling duration, typically

15 s

Rotational speed

600 min

-1

Operating temperature

–10 ... +50 °C

Storage temperature

–20 ... +70 °C

Relative air humidity, max.

90 %

Laser class

2

Laser type

635 nm, <1 mW

Laser beam Ø at the exit open-

ing, approx.

1)

5 mm

Tripod mount (horizontal)

5/8"-11

Batteries (NiMH)

Batteries (alkali-manganese)

2 x 1.2 V HR20 (D) (9 Ah)

2 x 1.5 V LR20 (D)

1) at 20 °C

2) alongside the axes

Please observe the article number on the type plate of your rotational la-

ser level. The trade names of individual rotational laser levels may vary.

For clear identification of your rotational laser level, see the serial 

number 

13

 on the type plate.

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Bosch Power Tools

Assembly

Power Supply of the Rotational Laser Level

Operation with Batteries/Rechargeable Batteries

Using alkali-manganese or rechargeable batteries is recom-

mended for operation of the measuring tool.

To open the battery compartment 

8

, turn the locking knob 

9

to position

 and pull out the battery compartment.

When inserting the batteries/rechargeable batteries, pay at-

tention to the correct polarity according to the representation 

on the inside of the battery compartment.

Always replace all batteries/rechargeable batteries at the 

same time. Do not use different brands or types of batteries/ 

rechargeable batteries together.

Shut the battery compartment 

8

 and turn the locking knob 

9

to the  position.

In case the batteries/rechargeable batteries have been insert-

ed incorrectly, the measuring tool cannot be switched on. In-

sert the batteries/rechargeable batteries with correct polarity.

f

Remove the batteries/rechargeable batteries from the 

measuring tool when not using it for longer periods. 

When storing for longer periods, the batteries/rechargea-

ble batteries can corrode and discharge themselves.

Operation with Battery Pack

Charge the battery pack 

7

 before using for the first time. The 

battery pack can only be charged with the battery charger 

15

intended for it.

f

Observe the mains voltage! 

The voltage of the power 

source must correspond with the data on the type plate of 

the battery charger.

Insert the appropriate mains plug 

16

 for your mains supply in-

to the battery charger 

15

 and allow it to engage.

Insert the charge plug 

17

 of the battery charger into the sock-

et connector 

11

 of the battery pack. Connect the battery 

Operating life time, approx.

– Batteries (NiMH)

– Batteries  (alkali-manga-

nese)

30 h

50 h

Weight according to 

EPTA-Procedure 01/2003

1.8 kg

Dimensions 

(length x width x height)

183 x 170 x 188 mm

Degree of protection

IP 56 (protected against dust

and powerful water jets)

Battery Charger

Article number

2 610 A13 782

Rated voltage

V~

100–240

Frequency

Hz

50/60

Output voltage

V=

7.5

Charging current

A

1.0

Allowable charging tempera-

ture range

°C

0–45

Charging time

h

14

Number of battery cells

2

Rated voltage 

(per battery cell)

V=

1.2

Weight according to 

EPTA-Procedure 01/2003

kg

0.2

Protection class

/

II

Laser Receiver

LR 1

Professional

Article number

3 601 K15 400

Receivable wavelength

635–650 nm

Working range

3)

200 m

Receiving angle

120°

Receivable rotation speed

>200 min

-1

Measuring accuracy

4)

– “Fine adjustment”

– “Medium adjustment”

±

1 mm

±

3 mm

Operating temperature

– 10 °C ... +50 °C

3) The working range (radius) can be reduced due to unfavourable am-

bient conditions (e. g. direct sunlight).

4) depends on clearance between laser receiver and rotational laser level

Please observe the article number on the type plate of your laser receiv-

er. The trade names of individual laser receivers may vary.

For clear identification of your laser receiver, see the serial number 

27

on the type plate.

Rotational Laser Level

GRL 400 H

Professional

1) at 20 °C

2) alongside the axes

Please observe the article number on the type plate of your rotational la-

ser level. The trade names of individual rotational laser levels may vary.

For clear identification of your rotational laser level, see the serial 

number 

13

 on the type plate.

Storage temperature

– 20 °C ... +70 °C

Battery

1 x 9 V 6LR61

Operating life time, approx.

50 h

Weight according to 

EPTA-Procedure 01/2003

0.36 kg

Dimensions 

(length x width x height)

148 x 73 x 30 mm

Degree of protection

IP 65 (dust-proof and

protected against powerful

water jets)

Laser Receiver

LR 1

Professional

3) The working range (radius) can be reduced due to unfavourable am-

bient conditions (e. g. direct sunlight).

4) depends on clearance between laser receiver and rotational laser level

Please observe the article number on the type plate of your laser receiv-

er. The trade names of individual laser receivers may vary.

For clear identification of your laser receiver, see the serial number 

27

on the type plate.

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Bosch Power Tools

1 619 929 J22 | (27.6.11)

charger to the mains supply. Charging the empty battery pack 

takes approx. 14 h. The battery charger and the battery pack 

are protected against overcharging.

A battery that is new or has not been used for a longer period 

does not develop its full capacity until after approx. 5 charg-

ing/discharging cycles.

Do not charge the battery pack 

7

 each time after using, other-

wise its capacity will be reduced. Charge the battery pack on-

ly when the charge-control indicator 

6

 flashes or lights up 

continuously.

A considerably reduced operating period after charging indi-

cates that the battery pack is used up and must be replaced.

If the battery pack is empty, the measuring tool can also be 

operated off of the battery charger 

15

 when connected to a 

power supply. Switch the measuring tool off, charge the bat-

tery pack for approx. 10 min and then switch the measuring 

tool on again with the battery charger connected.

To change the battery pack 

7

, turn the locking knob 

10

 to 

position

 and pull out the battery pack 

7

.

Insert a new battery pack and turn the locking knob 

10

 to the 

position.

f

Remove the battery pack from the measuring tool 

when not using it for longer periods. 

When storing for 

longer periods, the rechargeable batteries can corrode 

and discharge themselves.

Charge-control Indicator

When the charge-control indicator 

6

 flashes red for the first 

time, the measuring tool can still be operated for approx. 2 h.

When the charge-control indicator 

6

 lights up red continuous-

ly, measurements are no longer possible. The measuring tool 

switches off automatically after 1 minute.

Power Supply of the Laser Receiver

Alkali-manganese batteries are recommended for the laser 

receiver.

Press the latch 

18

 of the battery lid outward and open the bat-

tery lid 

28

.

When inserting the battery, pay attention to the correct polar-

ity according to the representation on the inside of the battery 

compartment.

When the battery low indicator 

b

 appears for the first time on 

the display 

25

, the laser receiver can still be operated for ap-

prox. 3 h.

f

Remove the battery from the laser receiver 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

f

Protect the measuring tool against moisture and direct 

sun light.

f

Do not subject the measuring tool to extreme tempera-

tures or variations in temperature. 

As an example, do not 

leave it in vehicles for longer periods. In case of large varia-

tions in temperature, allow the measuring tool to adjust to 

the ambient temperature before putting it into operation. In 

case of extreme temperatures or variations in temperature, 

the accuracy of the measuring tool can be impaired.

f

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 21) each time before continuing to work.

Setting Up the Measuring Tool

Position the measuring tool on a firm sur-

face or mount it to a tripod 

30

.

Due to the high levelling accuracy, the 

measuring tool reacts sensitively to ground 

vibrations and position changes. Therefore, 

pay attention that the position of the meas-

uring tool is stable in order to avoid opera-

tional interruptions due to re-levelling.

Switching On and Off

f

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 

variable laser beam 

4

.

For 

switching on

 the measuring tool, briefly press the On/Off 

button 

2

. The indicators 

3

, 

1

 and 

6

 light up briefly. The meas-

uring tool immediately starts the automatic levelling. During 

the levelling, the levelling indicator 

1

 flashes green, the laser 

does not rotate and flashes.

The measuring tool is levelled in as soon as levelling indicator 

1

 lights up green continuously and the laser beam is steady. 

After the levelling is completed, the measuring tool automati-

cally starts in rotational operation.

The measuring tool exclusively operates with fixed rotational 

speed in rotational operation, which is also suitable for use of 

a laser receiver.

When factory set, the shock-warning function is automatically 

switched on, and the shock-warning indicator 

3

 lights up green.

To 

switch off

 the measuring tool, briefly press the On/Off 

button 

2

. When the shock warning has actuated (shock-warn-

ing indicator 

3

 flashes red), briefly press the On/Off button 

once to restart the shock-warning function, and then again to 

switch off the measuring tool.

f

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 20). Reposition the measuring tool and switch it on again.

Starting Operation of the Laser Receiver

f

Protect the laser receiver against moisture and direct 

sun light.

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Bosch Power Tools

f

Do not subject the laser receiver to extreme tempera-

tures or variations in temperature. 

As an example, do not 

leave it in vehicles for longer periods. In case of large varia-

tions in temperature, allow the laser receiver to adjust to the 

ambient temperature before putting it into operation. In 

case of extreme temperatures or variations in temperature, 

the accuracy of the laser receiver can be impaired.

Position the laser receiver at least 50 cm away from the rota-

tional laser level. Position the laser receiver in such a manner 

that the laser beam can reach the reception area 

24

.

Switching On and Off

f

A loud audio signal sounds when switching on the laser 

receiver. 

“The A-weighted sound pressure level of the au-

dio signal is up to  95 dB(A) at a distance of 0.2 m.”

f

Do not hold the laser receiver close to your ear! 

The 

loud audio signal can cause hearing defects.

To 

switch on

 the laser receiver, press the On/Off button 

19

. 

Two audio signals sound and all display indicators light up 

briefly.

To 

switch off

 the laser receiver, press the On/Off button 

19

again.

When no button is pressed on the laser receiver for approx. 

10 minutes and when no laser beam reaches the reception ar-

ea 

24

 for 10 minutes, the laser receiver automatically switch-

es off in order to save the battery. The switching off is indicat-

ed by an audio signal.

Selecting the Setting of the Centre Indicator

With button 

20

, you can specify with which accuracy the po-

sition of the laser beam is indicated as central on the recep-

tion area:

– “Fine” adjustment, (indication 

f

 on the display),

– “Medium” adjustment, (indication 

a

 on the display).

An audio signal sounds when the accuracy setting is changed.

Whenever switching on the laser receiver, the accuracy level 

“medium” is set.

Direction Indicators

The bottom 

g

, centre 

e

 and top 

c

 indicators (both on the front 

and rear side of the laser receiver) indicate the position of the 

rotating laser beam in the reception area 

24

. Additionally, the 

position can be indicated with an audio signal (see “Audio Sig-

nal for Indication of the Laser Beam”, page 20).

Laser receiver too low:

 When the laser beam runs through 

the top half of the reception area 

24

, the bottom direction in-

dicator 

g

 appears on the display.

When the audio signal is switched on, a slow-beat signal 

sounds.

Move the laser receiver upward in the direction of the arrow. 

When approaching the centre mark 

23

, only the tip of the di-

rection indicator 

g

 is indicated.

Laser receiver too high:

 When the laser beam runs through 

the bottom half of the reception area 

24

, the top direction in-

dicator 

c

 appears on the display.

When the audio signal is switched on, a fast-beat signal sounds.

Move the laser receiver downward in the direction of the ar-

row. When approaching the centre mark 

23

, only the tip of 

the direction indicator 

c

 is indicated.

Laser receiver in centre position:

 When the laser beam runs 

through the reception area 

24

 at the centre mark 

23

, the cen-

tre indicator 

e

 lights up. When the audio signal is switched on, 

a continuous signal sounds.

Audio Signal for Indication of the Laser Beam

The position of the laser beam on the reception area 

24

 can 

be indicated via an audio signal.

After the laser receiver has been switched on, the audio signal 

is always switched off.

When switching on the audio signal, you can choose between 

two volume levels.

To switch on the audio signal or change the volume level, push 

the acoustic signal button 

21

 until the requested volume level 

is indicated. At medium volume level, the audio signal indica-

tor 

d

 in the display flashes; at high volume level, the indicator 

is continuously lit. When the audio signal is set to off, the indi-

cator goes out.

Automatic Levelling of the Rotational Laser Level

After switching on, the measuring tool checks the horizontal 

position and automatically compensates irregularities 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 

1

 continuously lights up red. Reposi-

tion the measuring tool and wait for it to re-level. Without re-

positioning, 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 position. Automatic re-levelling takes place af-

ter position changes. To avoid faulty measurements, the rotor 

stops during the levelling process, the laser flashes and the 

levelling indicator 

1

 flashes 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.

When factory set, the shock-warning function is activated af-

ter switching on the measuring tool (shock-warning indicator 

3

 lit). The shock warning is activated approx. 30 s after 

switching on the measuring tool or switching on the shock-

warning function.

When the levelling-accuracy range is exceeded after a position 

change of the measuring tool or when heavy ground vibrations 

are detected, the shock-warning function is actuated: The rota-

tion is stopped, the laser flashes, the levelling indicator 

1

 goes 

out and the shock-warning indicator 

3

 flashes red.

When the shock-warning function has actuated, briefly press 

the On/Off button 

2

. The shock-warning function is restarted 

and the measuring tool starts the levelling. As soon as the 

measuring tool is levelled in (the levelling indicator 

1

 continu-

ously lights up green), it automatically starts in rotation oper-

ation. Now, check the height of the laser beam with a refer-

ence point and correct the height, if required.

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Bosch Power Tools

1 619 929 J22 | (27.6.11)

When, after the shock-warning function has actuated, the 

function is not restarted by pressing On/Off button 

2

, the la-

ser is automatically switched off after 2 minutes and the 

measuring tool after 2 hours.

To 

switch off

 the shock-warning function, press the On/Off 

button 

2

 for 3 seconds. When the shock-warning function has 

actuated (shock-warning indicator 

3

 flashes red), firstly press 

the On/Off button briefly, and then again for 3 seconds. When 

the shock-warning function is shut off, the shock-warning in-

dicator goes out 

3

.

To 

switch on

 the shock-warning function, press the On/Off 

button 

2

 for 3 seconds. The shock-warning indicator 

3

 contin-

uously lights up green, and the shock-warning function is acti-

vated after 30 seconds.

The shock-warning function setting is stored when switching 

off the measuring tool.

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 up-

ward 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 devia-

tion 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 pos-

sible, also set up the measuring tool in the centre of the work 

area.

Accuracy Check of the Measuring Tool

Apart from exterior influences, device-specific influences 

(such as heavy impact or falling down) can lead to deviations. 

Therefore, check the accuracy of the measuring tool each 

time before starting your work.

A free measuring distance of 20 m on a firm surface between 

two walls A and B is required for the check. A reversal meas-

urement must be carried out over both axes X and Y (each 

positive and negative; 4 complete measurements).

– Mount the measuring tool onto a tripod, or place it on a firm 

and level surface close to wall A. Switch the measuring tool 

on.

– After the levelling, mark the centre of the laser beam on 

wall A (point

I

).

– Rotate the measuring tool by 180°, allow it to level in and 

mark the centre point of the laser beam on the apposing 

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 propping), so that the centre of the laser beam runs ex-

actly 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 

d

 of both marked points 

I

 and 

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°.

On the measuring section of 2 x 20 m = 40 m, the maximum 

allowable deviation is:

40 m x

±

0.08 mm/m =

±

3.2 mm.

Consequently, the difference 

d

 between points 

I

 and 

III

 for 

each of the four individual measurements may not exceed 

3.2 mm max.

A

B

20 m

A

B

180°

A

B

A

B

180°

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Bosch Power Tools

If the measuring tool should exceed the maximum deviation in 

anyone of the four measuring procedures, have it checked at 

a Bosch after-sales service agent.

Working Instructions for the Rotational Laser 

Level

f

Always use the centre of the laser line for marking. 

The 

width of the laser line changes with the distance.

Laser Viewing Glasses (Accessory)

The laser viewing glasses filter out the ambient light. This 

makes the red light of the laser appear brighter for the eyes.

f

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.

f

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 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 

12

 onto the 5/8" male thread of the tripod 

and screw the locking screw of the tripod tight.

On a tripod 

30

 with a measuring scale on the elevator column, 

the height difference can be adjusted directly.

Working with the Laser Target Plate (Accessory)

Using the laser target plate 

37

, it is possible to transmit the la-

ser height onto a wall.

With the zero field and the scale, the offset or drop to the re-

quired height can be measured and projected at another loca-

tion. 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)

For checking irregularities or projecting gradients, it is recom-

mended to use the measuring rod 

31

 together with the laser 

receiver.

A relative millimeter scale (

±

50 cm) is marked on the top of 

the measuring rod 

31

. Its zero height can be preset at the bot-

tom of the elevator column. This allows for direct reading of 

deviations from the specified height.

Working Instructions for the Laser Receiver

Marking

When the laser beam runs through the center of the reception 

area 

24

, its height can be marked at the centre mark 

23

 right 

and left on the laser receiver. The centre mark is located 

45 mm away from the top edge of the laser receiver.

Aligning with the Spirit Level

The laser receiver can be aligned vertically (plumb line) with 

the spirit level 

26

. A laser receiver attached out-of-level leads 

to faulty measurements.

Attaching with the Holder (see figure A)

With the holder 

35

, the laser receiver can be fastened to a 

construction laser measuring rod 

31

 (accessory) as well as to 

other auxiliary tools with a width of up to 65 mm.

Screw the holder 

35

 to the retainer opening 

29

 on the rear 

side of the measuring tool with fastening screw 

34

.

Loosen the locking screw 

32

, slide the holder onto the con-

struction laser measuring rod 

31

, for example, and retighten 

the locking screw 

32

.

The upper edge 

33

 of the holder is located at the same height 

as the centre mark 

23

 and can be used for marking of the laser 

beam.

Attaching with the Magnet (see figure B)

When a positive-lock attachment is not absolutely required, 

the laser receiver can be attached to steel parts via the face 

side using the magnet plate 

22

.

Work Examples

Checking the Depth of Building Pits (see figure C)

Position the measuring tool on a firm surface or mount it to a 

tripod 

30

.

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.

When measuring over long distances, the measuring tool 

should always be set up in the centre of the work surface and 

on a tripod, in order to reduce interferences.

When working on unsafe ground, mount the measuring tool 

onto the tripod 

30

. Take care that the shock-warning function 

is activated, in order to avoid faulty measurements in case of 

ground vibrations or shock to the measuring tool.

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Bosch Power Tools

1 619 929 J22 | (27.6.11)

Overview of Indications

Maintenance and Service

Maintenance and Cleaning

Keep the rotational laser level, battery charger and laser re-

ceiver clean at all times.

Do not immerse the rotational laser level, battery charger and 

laser receiver 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 ro-

tational laser level regularly and pay attention for any lint.

If the rotational laser level, battery charger or laser receiver 

should fail despite the care taken in manufacture and testing, 

repair should be carried out by an authorised customer serv-

ices agent for Bosch power tools. Do not open the rotational 

laser level, battery charger or laser receiver yourself.

In all correspondence and spare parts orders, please always 

include the 10-digit article number given on the type plate of 

the rotational laser level, battery charger and laser receiver.

After-sales Service and Customer Assistance

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 al-

so be found under:

www.bosch-pt.com

Our customer service representatives can answer your ques-

tions concerning possible applications and adjustment of 

products and accessories.

Great Britain

Robert Bosch Ltd. (B.S.C.)

P.O. Box 98

Broadwater Park

North Orbital Road

Denham

Uxbridge

UB 9 5HJ

Tel. Service: +44 (0844) 736 0109

Fax: +44 (0844) 736 0146

E-Mail: boschservicecentre@bosch.com

Ireland

Origo Ltd.

Unit 23 Magna Drive

Magna Business Park

City West

Dublin 24

Tel. Service: +353 (01) 4 66 67 00

Fax: +353 (01) 4 66 68 88

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: +61 (01300) 307 044

Fax: +61 (01300) 307 045

Inside New Zealand:

Phone: +64 (0800) 543 353

Fax: +64 (0800) 428 570

Outside AU and NZ:

Phone: +61 (03) 9541 5555

www.bosch.com.au

Laser

 bea

m

Ro

tation of 

th

e laser

green

red

green

red

Switching on the measuring tool (1 s self-check)

z

z

z

Levelling in or re-levelling

2x/s



2x/s

Measuring tool levelled in/ready for operation

z

z

z

Self-levelling range exceeded

2x/s



z

Shock-warning function activated

z

Shock warning actuated

2x/s



2x/s

Battery voltage for 

≤

2 h operation

2x/s

Battery empty





z

2x/s

z



Flashing frequency (twice per second)

Continuous operation

Function stopped

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Bosch Power Tools

Republic of South Africa

Customer service

Hotline: +27 (011) 6 51 96 00

Gauteng – BSC Service Centre

35 Roper Street, New Centre

Johannesburg

Tel.: +27 (011) 4 93 93 75

Fax: +27 (011) 4 93 01 26

E-Mail: bsctools@icon.co.za

KZN – BSC Service Centre

Unit E, Almar Centre

143 Crompton Street

Pinetown

Tel.: +27 (031) 7 01 21 20

Fax: +27 (031) 7 01 24 46

E-Mail: bsc.dur@za.bosch.com

Western Cape – BSC Service Centre

Democracy Way, Prosperity Park

Milnerton

Tel.: +27 (021) 5 51 25 77

Fax: +27 (021) 5 51 32 23

E-Mail: bsc@zsd.co.za

Bosch Headquarters

Midrand, Gauteng

Tel.: +27 (011) 6 51 96 00

Fax: +27 (011) 6 51 98 80

E-Mail: rbsa-hq.pts@za.bosch.com

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: 400 826 8484

Fax: +86 571 8777 4502

E-Mail: contact.ptcn@cn.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: +852 (21) 02 02 35

Fax: +852 (25) 90 97 62

E-Mail: info@hk.bosch.com

www.bosch-pt.com.hk

Indonesia

PT. Multi Mayaka

Kawasan Industri Pulogadung

Jalan Rawa Gelam III No. 2

Jakarta 13930

Indonesia

Tel.: +62 (21) 46 83 25 22

Fax: +62 (21) 46 82 86 45/68 23

E-Mail: sales@multimayaka.co.id

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.: +63 (2) 870 3871

Fax: +63 (2) 870 3870

matheus.contiero@ph.bosch.com

www.bosch-pt.com.ph

Bosch Service Center:

9725-27 Kamagong Street

San Antonio Village

Makati City, Philippines

Tel.: +63 (2) 899 9091

Fax: +63 (2) 897 6432

rosalie.dagdagan@ph.bosch.com

Malaysia

Robert Bosch (S.E.A.) Pte. Ltd.

No. 8A, Jalan 13/6

G.P.O. Box 10818

46200 Petaling Jaya

Selangor, Malaysia

Tel.: +60 (3) 7966 3194

Fax: +60 (3) 7958 3838

cheehoe.on@my.bosch.com

Toll-Free: 1800 880 188

www.bosch-pt.com.my

Thailand

Robert Bosch Ltd.

Liberty Square Building

No. 287, 11 Floor

Silom Road, Bangrak

Bangkok 10500

Tel.: +66 (2) 6 31 18 79 – 18 88 (10 lines)

Fax: +66 (2) 2 38 47 83

Robert Bosch Ltd., P. O. Box 2054

Bangkok 10501, Thailand

Bosch Service – Training Centre

2869-2869/1 Soi Ban Kluay

Rama IV Road (near old Paknam Railway)

Prakanong District

10110 Bangkok

Thailand

Tel.: +66 (2) 6 71 78 00 – 4

Fax: +66 (2) 2 49 42 96

Fax: +66 (2) 2 49 52 99

Singapore

Robert Bosch (SEA) Pte. Ltd.

11 Bishan Street 21

Singapore 573943

Tel.: +65 6571 2772

Fax: +65 6350 5315

leongheng.leow@sg.bosch.com

Toll-Free: 1800 333 8333

www.bosch-pt.com.sg

OBJ_DOKU-20994-002.fm  Page 24  Monday, June 27, 2011  12:55 PM