BOSCH GRL 400 H Professional Rotary Laser Level Instruction Manual

: June 3, 2024
: Bosch

Table of Contents

BOSCH GRL 400 H Professional Rotary Laser Level
Safety Notes
Product Description and Specifications
Technical Data
Assembly
Operation
Work Examples
Overview of Indications
Maintenance and Service
Documents / Resources

BOSCH GRL 400 H Professional Rotary Laser Level

BOSCH-GRL 400-H -Professional-Rotary-Laser-Level-
product

Safety Notes

Rotational Laser Level
All instructions must be read and observed in order to work safely with the measuring tool. The integrated protections in the measuring tool may be compromised if the measuring tool is not used in accordance with the instructions provided. Never make warning signs on the measuring tool unrecognizable. STORE THESE INSTRUCTIONS IN A SAFE PLACE AND INCLUDE THEM WITH THE MEASURING TOOL WHEN GIVING IT TO A THIRD PARTY.

Caution – The use of other operating or adjusting equipment or the application of other processing methods than those mentioned here can lead to dangerous radiation exposure.
The measuring tool is provided with a warning label (marked with the number 14 in the representation of the measuring tool on the graphics page).
If the text of the warning label is not in your national language, stick the provided warning label in your national language over it before operating for the first time. Do not direct the laser beam at persons or animals and do not stare into the direct or reflected laser beam yourself, not even from a distance. You could blind somebody, cause accidents or damage your eyes.
If laser radiation strikes your eye, you must deliberately close your eyes and immediately turn your head away from the beam.
Do not make any modifications to the laser equipment.
Do not use the laser viewing glasses as safety goggles. The laser viewing glasses are used for improved visualisation of the laser beam, but they do not protect against laser radiation.
Do not use the laser viewing glasses as sun glasses or in traffic. The laser viewing glasses do not afford complete UV protection and reduce colour perception.
Have the measuring tool repaired only through qualified specialists using original spare parts. This ensures that the safety of the measuring tool is maintained.
Do not allow children to use the laser measuring tool without supervision. They could unintentionally blind other persons or themselves.
Do not operate the measuring tool in explosive environments, 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.
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.
Keep the battery pack when not being used away from paper clips, coins, keys, nails, screws or other small metal objects that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
Under abusive conditions, liquid may be ejected from the battery pack; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritations or burns.
Recharge the battery pack only with the chargers specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
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.

Keep the laser target plate 37 away from magnetic data medium and magnetically-sensitive equipment. The effect of the magnets on the laser target plate can lead to irreversible 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 injury.

This charger is not intended for use by children and persons with physical, sensory or mental limitations or a lack of experience or knowledge. This charger can be used by children aged 8 and above and by persons who have physical, sensory or mental limitations or a lack of experience or knowledge if a person responsible for their safety supervises them or has instructed them in the safe operation of the charger and they understand the associated dangers. Otherwise, there is a danger of operating errors and injuries.
Supervise children during use, cleaning and maintenance. This will ensure that children do not play with the charger. Keep the battery charger away from rain or moisture. Penetration of water in the battery charger increases the risk of an electric shock.
Charge the measuring tool only with the supplied charger.
Charge only Bosch NiCd/NiMH batteries. The battery voltage must match the battery charging voltage of the charger. Otherwise there is a danger of fire and explosion.
Keep the battery charger clean. Contamination can lead to danger of an electric shock.
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.
Do not operate the battery charger on easily inflammable surfaces (e. g., paper, textiles, etc.) or surroundings. The heating of the battery charger during the charging process can pose a fire hazard.
Under abusive conditions, liquid may be ejected from the battery pack; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritations or burns.

Products sold in GB only: Your product is fitted with a BS 1363/A approved electric plug with an 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 authorized 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 REFERENCE. Keep the measuring tool away from cardiac pacemakers. The magnet plate 22 generates a field that can impair the function of cardiac pacemakers.

Keep the measuring tool away from magnetic data medium and magnetically-sensitive equipment. The effect of the magnet plate 22 can lead to irreversible data loss.
Have the measuring tool repaired only through qualified specialists using original spare parts. This ensures that the safety of the measuring tool is maintained.
Do not operate the measuring tool in explosive environments, 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 intended for vertical leveling. The measuring tool is suitable for outdoor use.
Laser Receiver
The measuring tool is intended for swift finding of rotating laser 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 illustration of the rotational laser level, battery charger and laser receiver on the graphics page.

Rotational laser level/Battery charger

BOSCH-GRL 400-H -Professional-Rotary-Laser-Level-fig1

Automatic levelling indicator
On/Off button / shock-warning button
Shock-warning indicator
Variable laser beam
Exit opening for laser beam
Charge-control indicator
Battery pack
Battery compartment
Locking knob of the battery compartment
Locking knob of the battery pack
Socket for charge connector
Tripod mount 5/8″
Serial number of the rotational laser level
Laser warning label
Battery charger
Mains plug of the battery charger
Charge connector
**Laser receiver***
Latch of the battery lid
On/Off button of the laser receiver
Button for selecting the measuring accuracy
Audio signal button
Magnet plate
Centre mark
Reception area for the laser beam
Display
Laser receiver spirit level
Serial number of the laser receiver
Battery lid
Retainer openings for the holder
Locking screw for the holder
Holder upper edge
Fastening screw of the holder
Holder
Indicator elements of the laser receiver
- Indicator for measuring accuracy is “Medium”
- Battery low indicator
- A direction indicator, up
- Audio signal indicator
- Centre indicator
- Indicator for measuring accuracy “Fine”
- A direction indicator, down
  Accessories/Spare parts
Tripod*
Construction laser measuring rod*
Laser viewing glasses*
Laser target plate*
Case

The accessories illustrated or described are not included as standard delivery.

Technical Data

BOSCH-GRL 400-H -Professional-Rotary-Laser-Level-fig7

at 25 °C
alongside the axes
For clear identification of your rotational laser level, see serial number 13 on the type plate.
The working range (radius) can be reduced due to unfavorable ambient conditions (e.g. direct sunlight).
depends on clearance between the laser receiver and rotational laser level
dependent on laser class and laser type of the rotational laser level
The measuring accuracy can be impacted by unfavorable environmental conditions (e.g. direct sun irradiation).

For clear identification of your laser receiver, see serial number 27 on the type plate.

BOSCH-GRL 400-H -Professional-Rotary-Laser-Level-fig9

Assembly

Power Supply of the Rotational Laser Level
Operation with Batteries/Rechargeable Batteries
Using alkali-manganese or rechargeable batteries is recommended for the operation of the measuring tool.

To open battery compartment 8, turn the locking knob 9 to position and pull out the battery compartment. When inserting the batteries/rechargeable batteries, pay attention 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 inserted incorrectly, the measuring tool cannot be switched on. Insert the batteries/rechargeable batteries with correct polarity.

Remove the batteries/rechargeable batteries from the measuring tool when not using it for longer periods. When storing for longer periods, the batteries/rechargeable batteries can corrode and self-discharge.

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.
- 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 into the battery charger 15 and allow it to engage.
Insert the charge plug 17 of the battery charger into the socket connector 11 of the battery pack. Connect the battery 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 charging/discharging cycles. Do not charge the battery pack 7 each time after using, otherwise its capacity will be reduced. Charge the battery pack only when the charge-control indicator 6 flashes or lights up continuously. A considerably reduced operating period after charging indicates 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 battery 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.
- 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 self-discharge.

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 continuously, 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 battery lid 28. When inserting the battery, pay attention to the correct polarity 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 approx. 3 h.
Remove the battery from the laser receiver when not using it for longer periods. When storing for longer periods, the battery can corrode and self-discharge.

Operation

Starting Operation of the Rotational Laser Level

Protect the measuring tool against moisture and direct sun light.
Do not subject the measuring tool to extreme temperatures or variations in temperature. As an example, do not leave it in vehicles for a long time. In case of large variations in temperature, allow the measuring tool to adjust to the ambient temperature before putting it into operation. In case of extreme temperatures or variations in temperature, the accuracy of the measuring tool can be impaired.
Avoid heavy impact to or dropping down of the measuring 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 22) each time before continuing to work.
Switch the measuring tool off before transporting it. This will save energy and prevent laser beams from being emitted accidentally.

Setting Up the Measuring Tool

Position the measuring tool on a firm surface 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 measuring tool is stable in order to avoid operational interruptions due to re-leveling.

Switching On and Off

Do not direct the laser beam at persons or animals (especially not at their eye level), and do not stare into the laser beam yourself (not even from a distance.) Immediately 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. Indicators 3, 1, and 6 light up briefly. The measuring tool immediately starts the automatic leveling. During the leveling, the leveling indicator 1 flash green, the laser does not rotate and flashes. The measuring tool is leveled in as soon as leveling indicator 1 lights up green continuously and the laser beam is steady. After the leveling is completed, the measuring tool automatically 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 the factory is 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 warning 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.
Do not leave the switched-on measuring tool unattended 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-leveling 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 21). Reposition the measuring tool and switch it on again.

Starting Operation of the Laser Receiver

Protect the laser receiver against moisture and direct sun light.
Do not subject the laser receiver to extreme temperatures or variations in temperature. As an example, do not leave it in vehicles for longer periods. In case of large variations in temperature, allow the 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 rotational laser level. Position the laser receiver in such a manner that the laser beam can reach the reception area 24.

To save energy, only switch the laser receiver on when you are using it.

Switching On and Off

A loud audio signal sounds when switching on the laser receiver. “The A-weighted sound pressure level of the audio signal is up to 95 dB(A) at a distance of 0.2 m.”
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 area 24 for 10 minutes, the laser receiver automatically switches off in order to save the battery. The switching off is indicated by an audio signal.

Selecting the Setting of the Centre Indicator
With button 20, you can specify with which accuracy the position of the laser beam is indicated as central on the reception 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 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 Signal for Indication of the Laser Beam”, page 21).
Laser receiver too low: When the laser beam runs through the top half of the reception area 24, the bottom direction indicator 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 direction 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 indicator 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 arrow. 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 center mark 23, the centre 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 indicator d in the display flashes; at high volume level, the indicator is continuously lit. When the audio signal is set to off, the indicator goes out.

Automatic Levelling of the Rotational Laser Level
After switching on, the measuring tool checks the horizontal position and automatically compensates for irregularities within the self-leveling range of approx. 8% (5°). When the measuring tool is inclined by more than 8 % after switching on or after a position change, leveling in is no longer possible. In this case, the rotor is stopped, the laser flashes and leveling indicator 1 continuously lights up red. Reposition the measuring tool and wait for it to re-level. Without repositioning, the laser is automatically switched off after 2 minutes and the measuring tool after 2 hours. When the measuring tool is levelled in, it continuously checks the horizontal position. Automatic re- leveling takes place after position changes. To avoid faulty measurements, the rotor stops during the leveling process, the laser flashes and the levelling indicator 1 flashes green.

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 heights, and thus prevents vertical errors. When factory set, the shock-warning function is activated after 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 leveling-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 rotation is stopped, the laser flashes, the leveling 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 continuously lights up green), it automatically starts in rotation operation. Now, check the height of the laser beam with a reference point and correct the height, if required.

When, after the shock-warning function has been actuated, the function is not restarted by pressing On/Off button 2, the laser 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 indicator goes out 3.
To switch on the shock-warning function, press the On/Off button 2 for 3 seconds. The shock-warning indicator 3 continuously lights up green, and the shock-warning function is activated after 30 seconds.

The shock-warning function setting is stored when switching off the measuring tool.

Leveling Accuracy of the Rotational Laser Level
Influences on Accuracy
The ambient temperature has the greatest influence. Especially temperature differences occurring from the ground upward can divert the laser beam. The deviations play a role in excess of approx. 20 m measuring distance and can easily reach two to four times the deviation at 100 m. Because the largest difference in temperature layers is close to the ground, the measuring tool should always be mounted on a tripod when measuring distances exceeding 20 m. If possible, also set up the measuring tool in the centre of the work area.

Accuracy Check of the Measuring Tool
In addition to external influences, device-specific influences (e.g. falls or heavy impacts) can also lead to deviations. For this reason, check the levelling accuracy each time before beginning 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 measurement 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 (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 opposing 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 exactly against the previously marked point II on wall B.
Rotate the measuring tool by 180° without changing the height. Allow it to level in and mark the centre point of the laser beam on wall A (point III). Take care that point III is as vertical as possible above or below point I.

The difference 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 procedure by 90°.

The maximum permitted deviation over the measuring section of 2 x 20 m = 40 m is as follows: 40 m x ±0.08 mm/m = ±3.2 mm. The difference d between points I and III must therefore be maximum 6. 4 mm in each of the four measuring procedures. If the measuring tool should exceed the maximum deviation in any one of the four measuring procedures, have it checked at a Bosch after-sales service agent.

Working Instructions for the Rotational Laser Level

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.

Do not use the laser viewing glasses as safety goggles. The laser viewing glasses are used for improved visualization of the laser beam, but they do not protect against laser radiation.
Do not use the laser viewing glasses as sunglasses or in traffic. The laser viewing glasses do not afford complete UV protection and reduced color 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 laser height onto a wall. With the zero field and the scale, the offset or drop to the required height can be measured and projected at another location. This eliminates the necessity of precisely adjusting the measuring tool to the height to be projected. The laser target plate 37 has a reflecting coating which improves 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 recommended to use measuring rod 31 together with the laser receiver.

A relative millimetre scale (±50 cm) is marked on the top of the measuring rod 31. Its zero height can be preset at the bottom 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 construction 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 center 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 a tripod: Determine the height difference between 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.

Overview of Indications

BOSCH-GRL 400-H -Professional-Rotary-Laser-Level-fig16

Maintenance and Service

Maintenance and Cleaning
Keep the rotational laser level, battery charger and laser receiver 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 rotational laser level regularly and pay attention for any lint.
After-sales Service and Application Service
Our after-sales service responds to your questions concerning the maintenance and repair of your product as well as spare parts. Exploded views and information on spare parts can also be found under: www.bosch- pt.com Bosch’s application service team will gladly answer questions concerning our products and their accessories. In all correspondence and spare parts orders, please always include the 10-digit article number given on the nameplate of the product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888
Australia, New Zealand and the Pacific Islands
Robert Bosch Australia Pty. Ltd. Power Tools Locked Bag 66 Clayton South VIC 3169 Customer Contact Center
Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch.com.au
Republic of South Africa
Customer service
Hotline: (011) 6519600
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-Mail: bsctools@icon.co.za

KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: (031) 7012120
Fax: (031) 7012446
E-Mail: bsc.dur@za.bosch.com
Western Cape – BSC Service Centre Democracy Way, Prosperity Park Milnerton
Tel.: (021) 5512577
Fax: (021) 5513223
E-Mail: bsc@zsd.co.za
Bosch Headquarters
Midrand, Gauteng
Tel.: (011) 6519600
Fax: (011) 6519880
E-Mail: rbsa-hq.pts@za.bosch.com
Disposal
The rotational laser level, battery charger, laser receiver, batteries, accessories and packaging should be sorted for environmental-friendly recycling. Do not dispose of the rotational laser level, battery charger, laser receiver and batteries into household waste!
Only for EC countries:
According to the European Guideline 2012/19/EU, electrical devices/tools that are no longer usable, and according to the European Guideline 2006/66/EC, defective or used battery packs/batteries, must be collected separately and disposed of in an environmentally correct manner. Batteries no longer suitable for use can be directly returned at:

Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
Battery packs/batteries:

Ni-MH: Nickel metal hydride
Subject to change without notice.

Documents / Resources

| BOSCH GRL 400 H Professional Rotary Laser Level [pdf] Instruction Manual
GRL 400 H Professional, Rotary Laser Level, Laser Level, Rotary Level, Level
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