BEGA 51 188.5 Ceiling Luminaire Downlight with Zoom Optics for Indoor Use Instruction Manual

June 13, 2024
BEGA

BEGA 51 188.5 Ceiling Luminaire Downlight with Zoom Optics for Indoor Use

Dimension

Dimension

Application

Ceiling luminaire downlight · Indoor luminaire with focusable zoom optics. Adjustable light distribution.
To change the light distribution, optical filters are available as accessory parts.
Changing the half beam angle between 14° and 51° by twisting the lens unit.

Product description

Cast aluminium luminaire housing, finish Colour velvet black, 2 mounting holes ø 4.5mm
Distance apart 66mm
Optical lens made of silicate glass
Adjustable metal adapter ring with PMMA lens
combination and integrated optical filter.
Connecting terminals 2.5°
Earth conductor connection
BEGA Ultimate Driver®
LED power supply unit
220-240 V 0/50-60 Hz
DC 176-280 V
BEGA Thermal Control®
Temporary thermal regulation to protect temperature-sensitive components without switching off the luminaire
Safety class I
 – Conformity mark
Weight: 0.6 kg
This product contains light sources of energy efficiency class(es) F

Safety

The installation and operation of this luminaire are subject to national safety regulations. Installation and commissioning may only be carried out by a qualified electrician. The manufacturer accepts no liability for damage caused by improper use or installation. If subsequent modifications are made to the luminaire, the person responsible for these modifications shall be considered the manufacturer.

Overvoltage protection

The electronic components installed in the luminaire are protected against overvoltage in accordance with DIN EN 61547. To achieve an additional protection against e.g. transients, etc. we recommend separate overvoltage protection components. You can find them on our website at www.bega.com.

Lamp

Module connected wattage: 8.8 W
Luminaire connected wattage: 10 W
Rated temperature: ta=25 °C
Ambient temperature: ta max=50 °C

51 188.5K3

Module designation: LED-1218/930
Colour temperature: 3000 K
Colour rendering index: CRI > 90
Module luminous flux: 1080 lm
Luminaire luminous flux: 580 lm
Luminaire luminous efficiency: 58 lm/W

Light technique

Adjustable light distribution
Half beam angle 14° – 51°

Installation

LED are high-quality electronic components!
Please avoid touching the light output opening of the LED directly during installation or relamping.

Remove mounting plate from the luminaire housing.
Unplug the earth conductor connection (plug contact).

Please note:

If the luminaire is to be mounted onto a metallic, electroconductive surface, it is mandatory to make sure that the mounting surface is connected conductive to the earth conductor of the luminaire!
Lead the power connecting cable through the mounting plate. Fix the mounting plate with enclosed or any other suitable fixing material onto the mounting surface.
Establish the earth conductor connection on the earthing screw ( ) of the mounting plate. Establish the earth conductor connection to the luminaire housing (plug contact).
Push silicone hoses over connecting wires and make the electrical connection at the terminal marked (L) and (N).

Installation

IMPORTANT:

To ensure secure connection, the luminaire housing must be positioned precisely in relation to the mounting plate.
Make sure that the vertical bar inside the luminaire housing is positioned precisely in the area of the mounting hole on the long bar of the mounting plate.
Press the luminaire housing firmly against the mounting plate and turn it clockwise firmly against the stop.
The desired half beam angle of the luminaire can be set by turning the adjustment ring with the marked cam.
The range of the half beam angles on the trim ring includes a tolerance of ± 2.5°.

Cleaning · Maintenance

Clean luminaire regularly with solvent-free cleansers from dirt.

Replacing the LED module

The designation of the LED module is noted on a label in the luminaire.
The light colour and light output of BEGA replacement modules correspond to those of the modules originally fitted. The module can be replaced by qualified personnel using standard tools.
Disconnect the system from the mains.

Replacing the LED module

Grasp the internal adapter ring with optical filter by one of its metal tabs and pull it out of the recess in the luminaire housing against the magnetic resistance.
Loosen the trim ring counter-clockwise from the housing of the zoom downlight.
Remove the reflector with optical lens unit from the housing.
Remove the black insulating foil from the LED module.
Remove the LED module. Install the replacement LED module.
Apply the replacement insulating foil to the LED module.
Please follow the installation instructions for the new LED module.

Replacing the LED module

IMPORTANT: Before inserting the reflector into the luminaire housing, make sure that the polycarbonate sign (>PC<) embossed in the lens holder points in the direction of the LED connection terminal.
Guide the recesses of the lens holder over the two bolts and insert the reflector.
Place the trim ring with the scale on the luminaire housing. Make sure that the 15° position is correctly positioned in relation to the embossed polycarbonate sign (>PC<) in the lens holder.
Insert the trim ring into the recess of the luminaire housing (note 15° position) and tighten clockwise.
Set the desired half beam angle of the luminaire by turning the marked adjustment ring cam. Reinsert the adapter ring with optical filter into the housing of the zoom downlight. The magnetic housing recess allows the adapter ring to lock precisely into place.
If the disc combination of the adapter ring with optical filter is defective, it must be replaced.

Accessories · Optical filters

13 291 flat beam
13 293 symmetrical, diffuse
13 292 asymmetrical

For the accessories a separate instructions for use can be provided upon request.

Spares

Trim ring: 20 000 106B10
LED power supply unit: DEV-0447/250
LED module 3000 K: LED-1218/930
Lens unit: 75 004 801
Adapter ring with optical filter: 75 004 848

Customer Support

BEGA Gantenbrink-Leuchten KG · Postfach 3160 · 58689 Menden · info@bega.com · www.bega.com

References

Read User Manual Online (PDF format)

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Download This Manual (PDF format)

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