BOSCH LR 45 Professional Laser Receiver Instruction Manual

: June 9, 2024
: Bosch

Table of Contents

LR 45 Professional Laser Receiver
Safety Instructions
Technical Data
Assembly
Operation
Settings
Maintenance and Service
Documents / Resources

LR 45 Professional BOSCH LR 45 Professional Laser
Receiver Original instructions

LR 45 Professional Laser Receiver

BOSCH LR 45 Professional Laser Receiver - fig

Safety Instructions

All instructions must be read and observed.
The safeguards integrated into the measuring tool may be compromised if the measuring tool is not used in accordance with these instructions. STORE THESE INSTRUCTIONS IN A SAFE PLACE.

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 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.
When operating the measuring tool, loud signal tones may sound under certain circumstances. For this reason, keep the measuring tool away from your ears and from other persons. The loud sound can damage hearing.

Keep the magnet away from implants and other medical devices, e.g. pacemakers or insulin pumps. The magnet generates a field that can impair the function of implants and medical devices.

Keep the measuring tool away from magnetic storage media and magnetically-sensitive devices. The effect of the magnets can lead to irreversible data loss.

Product Description and Specifications
Please observe the illustrations at the beginning of this operating manual.

Intended Use
The laser receiver is intended to quickly find rotating laser beams of the wavelength specified in the technical data.
The laser receiver is suitable for indoor and outdoor use.
Product Features
The numbering of the product features refers to the illustration of the laser receiver on the graphics page.

Speaker
On/off button
Button for adjusting the reception accuracy
Audio signal/volume button
Display-illumination button
Display (front and back)
Spirit level
Magnets
Mount for holder
Centre mark
Laser beam reception area
Serial number
Battery compartment cover
Battery compartment cover locking mechanism
Centre line reference on the holdera)
Holdera)
Holder rotary knoba)
Holder unlock keya)
Measuring roda)
Spirit level for holdera)
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.

Display Elements
(a) Indicator for reception accuracy “coarse”
(b) Indicator for reception accuracy “medium”
(c) Indicator for reception accuracy “fine”
(d) Unit of measurement indicator
(e) Indicator for audio signal/volume
(f) Battery indicator
(g) Relative height indicator
(h) “Laser beam below centre line” direction indicator
(i) Centre line indicator
(j) “Laser beam over centre line” direction indicator

Technical Data

Laser receiver	LR 45
Article number	3 601 K69 L..
Receivable wavelength	500−650 nm
Suitable for rotary lasers	GRL 300 HV

GRL 300 HVG
GRL 400 H
Working range (radius)A)B)| 0.5–300 m
Reception angle| ±35°
Receivable rotation speed| 150/300/600 min-1

Reception accuracyC)D)

– “Fine”	±1 mm; ±2 mm
– “Medium”	±3 mm; ±5 mm
– “Coarse”	±7 mm; ±10 mm
Operating temperature	–10 °C to +50 °C
Storage temperature	–20 °C to +70 °C
Max. altitude	2000 m
Relative air humidity max.	90 %
Pollution degree according to IEC 61010-1	2 E)
Batteries	2 × 1.5 V LR6 (AA)
Approx. operating time	40 h F)
Weight according to EPTA-Procedure 01:2014	0.35 kg
Dimensions (length × width × height)	158 × 80 × 34 mm
Protection rating	IP 66

A) Depends on the rotary laser
B) The working range may be reduced by unfavourable environmental conditions (e.g. direct sunlight).
C) Dependent on the distance between the laser receiver and the rotary laser and on the laser class and laser type of the rotary laser
D) The reception accuracy may be reduced by unfavourable environmental conditions (e.g. direct sunlight).
E) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
F) When the audio signal and display illumination are switched off For clear identification of your laser receiver, see the serial number (12) on the type plate.

Assembly

Inserting/Changing the Batteries
Alkali-manganese batteries are recommended for the laser receiver.

Pull the locking mechanism (14) of the battery compartment cover outwards and lift up the battery compartment cover (13). Insert the batteries.
When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment.
The battery indicator (f) shows the state of charge of the batteries:

Display	Capacity
75−100 %
45−75 %
20−45 %
2−20 %
0−2 %

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 laser receiver when you are not using it for a prolonged period of time. The batteries can corrode and self-discharge during prolonged storage in the laser receiver.

Operation

Starting operation

Protect the laser receiver against moisture and direct sunlight.
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 oflarge 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.
Keep the work area free from obstacles that could reflect or obstruct the laser beam. For example, cover any reflective or shiny surfaces.
Do not measure through panes of glass or similar materials. The measurements may be distorted by a reflected or obstructed laser beam.

Setting up the laser receiver (see figure A)
Place the laser receiver at least 0.5 m away from the rotary laser. For rotary lasers with multiple operating modes, select the horizontal or vertical operation with the highest rotational speed.
Position the laser receiver so that the laser beam can reach the reception area (11). Align it so that the laser beam runs straight through the reception area (as shown in the figure).
Switching On/Off

A loud audio signal sounds when switching on the laser receiver. Therefore, keep the laser receiver away from your ear or other persons when switching it on. The loud sound can damage hearing.

To switch on the laser receiver, press the on/off button (2).
All display indicators light up briefly and an audio signal sounds.
To switch off the laser receiver, press and hold the on/off button (2) until all display indicators light up briefly and an audio signal sounds. With the exception of the display lighting, all settings will be saved.
If no button on the laser receiver is pressed for approx.
30 min and no laser beam reaches the reception area (11) for 30 min, then the laser receiver will automatically switch itself off to preserve battery life.

Direction indicators

The position of the laser beam in the reception area (11) is indicated as follows:
– On the display (6) on the front and rear of the laser receiver by means of the “laser beam below centre line” direction indicator (h), the “laser beam above centre line” direction indicator (j) and the centre line indicator (i),
– by an audio signal (optional).
Laser receiver too low: If the laser beam hits the upper half of the reception area (11), then the “laser beam above centre line” direction indicator (j) appears in the display.
If the audio signal is switched on, it will be emitted in a slow rhythm.
Move the laser receiver upwards in the direction of the arrow. Laser receiver too high: If the laser beam hits the lower half of the reception area (11), then the “laser beam below centre line” direction indicator (h) appears in the display.
If the audio signal is switched on, it will be emitted as a fast beeping sound.
Move the laser receiver downwards in the direction of the arrow.
Laser receiver centred: If the laser beam hits the reception area (11) at the height of the centre line, then the centre line indicator (i) appears in the display.
If the audio signal is switched on, a continuous tone sounds.
Memory function of last reception: If the laser beam is blocked by an obstacle and can no longer reach the reception area (11), the last displayed direction indicator for “laser beam above centre line” (j), for “laser beam below centre line” (h)or the centre line indicator (i) flashes for a short time on the display.

Relative height indicator (see figure B)
If the laser beam hits the reception area (11), the distance between the laser beam and the centre mark (10) is shown in the relative height indicator (g) on the display.
If the distance between the laser beam on the reception area (11) and the centre mark (10) is larger than 30 mm, the relative height indicator (g) will go out. In this case, only the corresponding direction indicator will be displayed.

Display illumination
The displays (6) on the front and rear of the laser receiver can be illuminated.
The display illumination is switched on every time the laser receiver is switched on. Display illumination is temporarily deactivated:
– 2 minutes after each button press, if no laser beam reaches the reception area,
– 2 minutes after each button press, if the position of the laser beam in the reception area does not change within this time.
To completely switch off the display illumination, press the display illumination button (5).

Settings

Selecting the setting of the centre line indicator
You can use the button for adjusting the reception accuracy (3) to specify the accuracy with which the position of the laser beam is indicated as “centred” on the reception area:
– Reception accuracy “fine” (indicator (c) on the display),
– Reception accuracy “medium” (indicator (b) on the display),
– Reception accuracy “coarse” (indicator (a) on the display).
For each of the indicators (a), (b) and (c) two values can be selected. With each press of the button for adjusting the reception accuracy (3), the exact value for the reception accuracy appears in the relative height indicator (g) for a short time.
The setting for reception accuracy is saved when the tool is switched off.

Laser Beam Indicator Audio Signal
The position of the laser beam on the reception area (11) can also be indicated by an audio signal.
The volume level can be changed or the audio signal switched off.
To change the volume level or switch off the audio signal, push the audio signal button (4) until the required volume level is indicated on the display. At a low volume, the audio signal indicator (e) appears on the display with no bars; at a high volume, the indicator appears with one bar. When the audio signal is switched off, the indicator goes out.
The setting for the audio signal is saved when the laser receiver is switched off.

Changing the unit of measurement
You can change the unit of measurement for the values in the relative height indicator (g).
For this, press the audio signal button (4) and the button for adjusting the reception accuracy (3) simultaneously and as many times as needed for the required unit to appear in the unit of measurement indicator (d).
The setting for the unit of measurement is saved when the laser receiver is switched off.

Working Advice
Aligning with the spirit level
The laser receiver can be aligned vertically (plumb line) with the spirit level (7). If a laser receiver is mounted at an angle, it will give incorrect measurements.

Marking
You can mark the position of the laser beam at the centre mark (10) on the left and right of the laser receiver when the beam hits the centre of the reception area (11).
When marking, take care to align the laser receiver so that it is exactly vertical (with a horizontal laser beam) or horizontal (with a vertical laser beam), as otherwise the marks are offset with respect to the laser beam.

Attaching using the holder (see figure C)
You can use the holder (16) to attach the laser receiver to a measuring rod (19) (accessory) as well as to other auxiliary tools with a width of up to 60 mm. Slide the holder (16) into the mount (9) on the laser receiver and click the holder into place. Loosen the rotary knob (17) on the holder, slide the holder onto the measuring rod (19) and retighten the rotary knob (17). You can use the spirit level (20) to ensure that the holder (16) is horizontally aligned along with the laser receiver. If the laser receiver is mounted at an angle, it will give incorrect measurements. The centre line reference (15) on the holder is situated at the same height as the centre marking (10) and can be used for marking the laser beam. To remove the holder (16) from the laser receiver,press the unlock key (18) and pull the holder off the laser receiver.

Attaching using a magnet (see figure D)
If an attachment is not required to be especially secure, the laser receiver can be attached to steel parts using the magnets (8).

Fault due to strobe lighting
Prevent strobe lighting (e.g from LED lights) from reaching the reception area (11) of the laser receiver.
In the event of a fault in the laser receiver due to strobe lighting, the unit of measurement indicator (d) will flash on the display. The relative height indicator (g) and the direction indicators (h), (i) and (j) will go out.
Move either the laser receiver or the source of the strobe lighting to a different location.

Maintenance and Service

Maintenance and Cleaning
Always keep the laser receiver clean.
Do not immerse the laser receiver in water or other liquids.
Wipe off any dirt using a damp, soft cloth. Do not use any detergents or solvents.

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

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

You can find further service addresses at:www.bosch- pt.com/serviceaddresses

Disposal
The laser receiver, accessories and packaging should be recycled in an environmentally friendly manner.
**** Do not dispose of laser receivers or batteries with household waste.

Only for EU countries:
According to the Directive 2012/19/EU on waste electrical and electronic equipment and its transposition into national law, laser receivers that are no longer usable, and, according to the Directive 2006/66/EC, defective or drained batteries must be collected separately and disposed of in an environmentally correct manner.
If disposed incorrectly, waste electrical and electronic equipment may have harmful effects on the environment and human health, due to the potential presence of hazardous substances.

Only for United Kingdom:
According to Waste Electrical and Electronic Equipment Reg-ulations 2013 (2013/3113) and the Waste Batteries and

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 7LL (2022.05) TAG / 150 BOSCH LR 45 Professional Laser
Receiver - br code

Documents / Resources

| BOSCH LR 45 Professional Laser Receiver [pdf] Instruction Manual
LR 45 Professional Laser Receiver, LR 45 Professional, Laser Receiver, Receiver
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| BOSCH LR 45 Professional Laser Receiver [pdf] Instruction Manual
LR 45 Professional Laser Receiver, LR 45, Professional Laser Receiver, Laser Receiver, Receiver