BOSCH 1 609 92A 8K4 GLL 50 G Line Laser Instruction Manual
- May 15, 2024
- Bosch
Table of Contents
GLL 50 G Professional
Original instructions
1 609 92A 8K4 GLL 50 G Line Laser
Safety Instructions
All instructions must be read and observed in order for the measuring tool to function safely. The safeguards integrated into the measuring tool may be compromised if the measuring tool is not used in accordance with these instructions. Never make warning signs on the measuring tool unrecognisable. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE AND INCLUDE THEM WITH THE MEASURING TOOL WHEN TRANSFERRING IT TO A THIRD PARTY.
▶ 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.
▶ The measuring tool is delivered with a laser warning sign (marked in the
illustration of the measuring tool on the graphics page).
▶ 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.
Do not direct the laser beam at persons or animals and do not stare into the direct or reflected laser beam yourself. You could blind somebody, cause accidents or damage your eyes.
▶ If laser radiation hits your eye, you must 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 goggles (accessory) as protective goggles. The laser
goggles make the laser beam easier to see; they do not protect you against
laser radiation.
▶ 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.
▶ Have the measuring tool serviced only by a qualified specialist using only
original replacement parts.
This will ensure that the safety of the measuring tool is maintained.
▶ Do not let children use the laser measuring tool unsupervised. They could
unintentionally blind themselves or other persons.
▶ Do not use the measuring tool in explosive atmospheres which contain
flammable liquids, gases or dust. Sparks may be produced inside the measuring
tool, which can ignite dust or fumes.
▶ Do not open the battery. There is a risk of short-circuiting.
▶ In case of damage and improper use of the battery, vapours may be emitted.
The battery can set alight or explode. Ensure the area is well ventilated and
seek medical attention should you experience any adverse effects. The vapours
may irritate the respiratory system.
▶ If used incorrectly or if the battery is damaged, flammable liquid may be
ejected from the battery. Contact with this liquid should be avoided. If
contact accidentally occurs, rinse off with water. If the liquid comes into
contact with your eyes, seek additional medical attention. Liquid ejected from
the battery may cause irritation r burns.
▶ The battery can be damaged by pointed objects such as nails or screwdrivers
or by force applied externally. An internal short circuit may occur, causing
the battery to burn, smoke, explode or overheat.
▶ When the battery is not in use, keep it away from paper clips, coins, keys,
nails, screws or other small metal objects that could make a connection from
one terminal to another. A short circuit between the battery terminals may
cause burns or a fire.
▶ Only use the battery with products from the manufacturer. This is the only
way in which you can protect the battery against dangerous overload.
Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short- circuiting.
Keep the measuring tool and the magnetic accessories away from implants and other medical devices, e.g. pacemakers or insulin pumps. The magnets inside the measuring tool and accessories generate a field that can impair the function of implants and medical devices.
▶ Keep the measuring tool and the magnetic accessories away from magnetic data storage media and magnetically sensitive devices. The effect of the magnets inside the measuring tool and accessories can lead to irreversible data loss.
Product Description and Specifications
Please observe the illustrations at the beginning of this operating manual.
Intended Use
The measuring tool is intended for determining and checking horizontal and
vertical lines.
The measuring tool is suitable for indoor use.
Product Features
The numbering of the product features shown refers to the illustration of the
measuring tool on the graphic page.
| 1. 1/4″ tripod mount | 10. Laser warning label |
|---|---|
| 2. Laser beam outlet aperture | 11. Serial number |
| 3. On/off switch | 12. Magneta) |
| 4. Charge indicator of the lithium-ion battery packa) | 13. Laser target |
platea)
5. USB Type-C® porta)b)| 14. Laser viewing glassesa)
6. Lithium-ion battery packa)| 15. USB Type-C® cablea)
7. Lithium-ion battery pack locking mechanisma)| 16. Tripoda)
8. Locking mechanism of the battery compartment cover| 17. Protective baga)
9. 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.
b) USB Type-C® and USB-C® are trademarks of USB Implementers Forum.
Technical Data
| Line Laser | GLL 50 G |
|---|---|
| Article number | 3 601 K65 3.. |
| Working rangeA) | 15 m |
| Levelling accuracyB)C)D) | ±0.6 mm/m |
| Self-levelling range | ±3.5° |
| Levelling time | < 6 s |
| Operating temperature | –10 °C to +40 °C |
| Storage temperature | –20 °C to +70 °C |
| Max. altitude | 2000 m |
| Relative air humidity max. | 90% |
| Pollution degree according to IEC 61010-1 | 2E) |
| Laser class | 2 |
| Laser type | < 5 mW, 500–540 nm |
| C₆ | 5 |
| Divergence | 25 × 5 mrad (full angle) |
| Tripod mount | 1/4″ |
Power supply
– Lithium-ion battery pack| 3.7 V
– Non-rechargeable batteries (alkaline manganese)| 2 × 1.5 V LR6 (AA)
Operating timeB)| 8 h
Weight according to EPTA-Procedure 01:2014| 0.3 kg
Dimensions (length × width × height)| 87 × 64 × 87 mm
Protection rating| IP55F)
Lithium-ion battery pack (accessory)| BA 3.7V 1.0Ah A
Article number| 1 607 A35 17H
Article number JP| 1 607 A35 0N8
Charging connection| USB Type-C®
Recommended USB Type-C® cable| 1 600 A01 6A8
Rated voltage| 3.7 V
Capacity| 1.0 Ah
Recommended ambient temperature during charging| +10 °C to +35 °C
Power supply
Output voltage| 5.0 V
Minimum output current| 500 mA
A) The working range may be reduced by unfavourable environmental conditions
(e.g. direct sunlight).
B) At 20–25 °C
C) Valid when levelled (0°)
D) The values stated presuppose normal to favourable environmental conditions
(e.g. no vibration, no fog, no smoke, no direct sunlight). Extreme
fluctuations in temperature can cause deviations in accuracy.
E) Only non-conductive deposits occur, whereby occasional temporary
conductivity caused by condensation is expected.
F) Protection against foreign bodies > 1 mm and against water jets (nozzle)
from any angle The serial number (11) on the type plate is used to clearly
identify your measuring tool.
Measuring Tool Power Supply
The measuring tool can be operated either with a Bosch lithium-ion battery
pack (6) or with conventional non-rechargeable batteries.
Note: Never store the measuring tool without an inserted battery
compartment cover (9) or lithium-ion battery pack (6), particularly in dusty
or humid environments.
Operation with Non-Rechargeable Batteries
To switch from a lithium-ion battery pack (6) to non-rechargeable batteries,
remove the lithium-ion battery pack (6).
It is recommended that you use alkaline manganese batteries to operate the
measuring tool.
Insert the non-rechargeable batteries.
When inserting the batteries, ensure that the polarity is correct according to
the illustration on the inside of the battery compartment.
Insert the battery compartment cover (9) and let it click into place.
If the non-rechargeable batteries are running low, the laser lines will flash
slowly for approx. 1 min.
If the non-rechargeable batteries are empty, the laser lines will flash
quickly for approx.
10 s, then the measuring tool will switch off.
Always replace all the batteries at the same time. Only use batteries from the
same manufacturer and which have the same capacity.
▶ Take the batteries out of the measuring tool when you 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 with Lithium-Ion Battery Pack (Accessory)
Inserting/Replacing a Lithium-Ion Battery Pack
To switch from non-rechargeable batteries to a lithium-ion battery pack (6),
remove the battery compartment cover (9) and the inserted non-rechargeable
batteries.
Insert the lithium-ion battery pack (6) and let the locking mechanism (7)
click into place.
To remove the lithium-ion battery pack (6), press the locking mechanism (7)
and take the lithium-ion battery pack out of the measuring tool.
Charging a Lithium-Ion Battery Pack
▶ For charging, use only a USB power supply unit whose output voltage and
minimum output current comply with the requirements in the “Technical Data”
section.
Observe the operating manual of the USB power supply unit.
▶ Pay attention to the mains voltage. The voltage of the power source must
match the voltage specified on the rating plate of the power adaptor. Power
adaptors marked with 230 V can also be operated with 220 V.
▶ Only use the USB connection to charge the battery at an ambient temperature
of between +10 °C and +35 °C. Charging outside of this temperature range can
damage the battery and increase the risk of fire.
Note: Lithium-ion rechargeable batteries are supplied partially charged
according to international transport regulations. To ensure full rechargeable
battery capacity, fully charge the rechargeable battery before using your tool
for the first time.
If the lithium-ion battery pack is running low, the laser lines will flash
slowly for approx. 1 min.
If the lithium-ion battery pack is empty, the laser lines will flash quickly
for approx. 10 s, then the measuring tool will switch off.
Open the flap for the USB Type-C® port (5). Connect the USB port to a USB
power supply unit using the USB cable (15).
Connect the USB power supply unit to the mains supply.
| Colour of charge indicator (4) | Meaning |
|---|---|
| Yellow | Lithium-ion battery pack is being charged. |
| Green | Lithium-ion battery pack is fully charged. |
| Red | Charging voltage or charging current is unsuitable. |
Remove the USB cable (15) after completing the charging process. Close the flap for the USB Type-C® port (5) to protect it from dust and splashes.
Operation
Starting Operation
▶ Protect the measuring tool from moisture and direct sunlight.
▶ Do not expose the measuring tool to any extreme temperatures or fluctuations
in temperature. For example, do not leave it in a car for extended periods of
time. If it has been subjected to significant fluctuations in temperature,
first allow the measuring tool to adjust to the ambient temperature and then
always carry out an accuracy check before continuing work (see “Accuracy Check
of the Measuring Tool”, page 13).
The precision of the measuring tool may be compromised if exposed to extreme
temperatures or fluctuations in temperature.
▶ Avoid substantial knocks to the measuring tool and avoid dropping it. Always
carry out an accuracy check before continuing work if the measuring tool has
been subjected to severe external influences (see “Accuracy Check of the
Measuring Tool”, page 13).
▶ Switch the measuring tool off when transporting it. The pendulum unit is
locked when the tool is switched off, as it can otherwise be damaged by big
movements.
Switching On/Off
To switch on the measuring tool, slide the on/off switch (3) to the “ON”
position. Imme-diately after switching on, the measuring tool sends laser
lines out of the outlet aperture (2).
▶ Do not direct the laser beam at persons or animals and do not stare into the
laser beam yourself (even from a distance).
To switch off the measuring tool, slide the on/off switch (3) to the OFF
position. The pendulum unit is locked when the tool is switched off.
▶ 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.
If the maximum permitted operating temperature of 40 °C is exceeded, the tool
shuts down to protect the laser diode. Once it has cooled down, the measuring
tool is operational again and can be switched back on.
Automatic Levelling (see figures A−B)
Position the measuring tool on a level, firm support or attach it to a tripod
(16).
After switching on, the automatic levelling function automatically compensates
irregularities within the self-levelling range of ±3.5°. The levelling is
finished as soon as the laser lines are permanently lit (i.e. no longer
flashing) and do not move anymore.
If automatic levelling is not possible, e.g. because the surface on which the
measuring tool stands deviates by more than 3.5° from the horizontal plane,
the laser lines will flash continuously and quickly and the measuring tool
will work without automatic levelling.
The laser lines remain switched on, but the two intersecting lines will no
longer necessarily be perpendicular to each other.
To work with automatic levelling again, set up the measuring tool so that it
is horizontal and wait for the self-levelling procedure to complete. As soon
as the measuring tool is within the self-levelling range of ±3.5° and is
levelled in, the laser lines will light up continuously again.
In case of ground vibrations or position changes during operation, the
measuring tool is automatically levelled again. Upon re-levelling, check the
position of the horizontal or vertical laser line with regard to the reference
points to avoid errors by moving the measuring tool.
Accuracy Check of the Measuring Tool
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.
First check the height accuracy and levelling accuracy of the horizontal laser
line, then the levelling accuracy of the vertical laser line.
Should the measuring tool exceed the maximum deviation during one of the
tests, please have it repaired by a Bosch after-sales service.
Checking the Height Accuracy of the Horizontal Line
For this check, you will need a free measuring distance of 5 m on firm ground
between two walls (designated A and B).
– Mount the measuring tool close to wall A on a tripod, or place it on a firm,
flat surface.
Switch on the measuring tool.
– Aim the laser at the closer wall A and allow the measuring tool to level in. Mark the middle of the point at which the laser lines cross on the wall (point I).
– Turn the measuring tool 180°, allow it to level in and mark the point where the laser lines cross on the opposite wall B (point Ⅱ).
– Position the measuring tool – without rotating it – close to wall B, switch it on and allow it to level in.
– Align the height of the measuring tool (using the tripod or by placing objects underneath as required) so that the point where the laser lines cross exactly hits the previously marked point Ⅱ on wall B.
– Turn the measuring tool 180° without adjusting the height. Aim it at wall A
such that the vertical laser line runs through the already marked point Ⅰ.
Allow the measuring tool to level in and mark the point where the laser lines
cross on wall A (point Ⅲ).
– The discrepancy d between the two marked points Ⅰ and Ⅲ on wall A reveals
the actual height deviation of the measuring tool.
The maximum permitted deviation on the measuring distance of 2 × 5 m = 10 m is
as follows: 10 m × ±0.6 mm/m = ±6 mm. The discrepancy d between points Ⅰ and Ⅲ
must therefore amount to no more than 6 mm.
Checking the Level Accuracy of the Horizontal Line
For this check, you will need a free area of 5 × 5 m.
- Mount the measuring tool in the middle between walls A and B on a tripod , or place it on a firm, level surface. Switch the measuring tool on and allow it to level in.
- At a distance of 2.5 m from the measuring tool, mark the centre of the laser line on both walls (point Ⅰ on wall A and point Ⅱ on wall B).
- Set up the measuring tool at a 5 m distance and rotated by 180° and allow it to level in.
- Align the height of the measuring tool (using the tripod or by placing objects underneath as required) so that the centre of the laser line exactly hits the previously marked point Ⅱ on wall B.
- Mark the centre of the laser line on wall A as point Ⅲ (vertically above or below point Ⅰ).
- The discrepancy d between the two marked points Ⅰ and Ⅲ on wall A reveals the actual horizontal deviation of the measuring tool.
The maximum permitted deviation on the measuring distance of 2 × 5 m = 10 m is
as follows:
10 m × ±0.6 mm/m = ±6 mm. The discrepancy d between points Ⅰ and Ⅲ must
therefore amount to no more than 6 mm.
Checking the Level Accuracy of the Vertical Line
For this check, you will need a door opening (on solid ground) which has at
least 2.5 m of space either side of the door.
- Place the measuring tool 2.5 m away from the door opening on a firm, flat surface (not on a tripod). Switch the measuring tool on and allow it to level in.
- Mark the centre of the vertical laser line on the floor of the door opening (point Ⅰ), 5 m away on the other side of the door opening (point Ⅱ) and on the upper edge of the door opening (point Ⅲ).
- Set up the measuring tool on the other side of the door opening, directly behind point Ⅱ. Allow the measuring tool to level in and align the vertical laser line in such a way that its centre passes through points Ⅰ and Ⅱ exactly.
- Mark the centre of the laser line on the upper edge of the door opening as point Ⅳ.
- The discrepancy d between the two marked points Ⅲ and Ⅳ reveals the actual vertical deviation of the measuring tool.
- Measure the height of the door opening.
You can calculate the maximum permitted deviation as follows:
Doubled height of the door opening × 0.6 mm/m
Example: At a door opening height of 2 m, the maximum deviation amounts to 2 ×
2 m × ±0.6 mm/m = ±2.4 mm. The points Ⅲ and Ⅳ must therefore be no further
than 2.4 mm from each other.
Working Advice
▶ Only the centre of the laser line must be used for marking. The width of the
laser line changes depending on the distance.
Working with the Laser Target Plate (accessory)
The laser target plate (13) improves visibility of the laser beam in
unfavourable conditions and at greater distances.
The reflective surface of the laser target plate (13) 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 1/4″ tripod mount (1) on the thread of the
tripod (16) or a conventional camera tripod. Tighten the measuring tool using
the locking screw of the tripod.
Roughly align the tripod before switching on the measuring tool.
Laser Goggles
The laser goggles filter out ambient light. This makes the light of the laser
appear brighter to the eye.
▶ 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.
▶ 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.
Maintenance and Service
Maintenance and Cleaning
Keep the measuring tool clean at all times.
Never immerse the measuring tool in water or other liquids.
Wipe off any dirt using a damp, soft cloth. Do not use any detergents or
solvents.
The areas around the outlet aperture of the laser in particular should be
cleaned on a regular basis. Make sure to check for lint when doing this.
Only store and transport the measuring tool in the protective pouch (17).
If the measuring tool needs to be repaired, send it off in the protective
pouch (17).
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
10‑digit 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: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my
You can find further service addresses at: www.bosch- pt.com/serviceaddresses
Transport
The recommended lithium-ion batteries are subject to legislation on the
transport of dangerous goods. The user can transport the batteries by road
without further requirements.
When shipping by third parties (e.g.: by air transport or forwarding agency),
special requirements on packaging and labelling must be observed. For
preparation of the item being shipped, consulting an expert for hazardous
material is required.
Dispatch battery packs only when the housing is undamaged. Tape or mask off
open contacts and pack up the battery in such a manner that it cannot move
around in the packaging.
Please also observe the possibility of more detailed national regulations.
Disposal
Do not dispose of the measuring tools or battery packs/batteries with
household waste.
**** Measuring tools, rechargeable/non-rechargeable batteries, accessories
and packaging should be sorted for environmental-friendly recycling.
Battery packs/batteries:
Li-ion:
Please observe the notes in the section on transport (see “Transport”, page
19).
1 609 92A 8K4 (2023.06)
Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 8K4 (2023.06) T / 114
References
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