BEGA 84860 Underwater Floodlight

Application

Water pressure-tight underwater floodlight for illuminating non-accessible ponds, pools, and water features with a depth up to 20 meters.

Diagram Description: The product diagrams illustrate the floodlight's dimensions and form. Key dimensions include a main body diameter of approximately 230mm, a height of 105mm, and a mounting bracket. Specific measurements indicated are Ø 20mm, Ø 230mm, a 120° swivel range, 45mm, 235mm, and a 9mm hole width for mounting.

Product Description

• Luminaire housing made of dezincification-resistant cast brass.
• Mounting bracket made of stainless steel (Material No. 1.4401), electropolished.
• Clear safety glass.
• Optical silicone lens: BEGA Hybrid Optics®.
• Reflector surface: Pure aluminium.
• Swivel range: 120°.
• Fixing: 2 elongated holes (9mm width, 120mm spacing).
• Connecting cable: Water-resistant 07RN8-F 5G1, 7m length.
• LED Power Supply: BEGA Ultimate Driver®, 220-240 V~ 0/50-60 Hz, DC 176-264 V.
• Control: DALI-controllable (1 DALI address).
• Insulation: Basic insulation between mains and control cables.
• Thermal Management: BEGA Thermal Control® for temporary thermal regulation to protect temperature-sensitive components without switching off the luminaire.
• Safety Class: I.
• Protection Class: IP 68 (Dust-tight and water pressure tight, maximum submersion depth 20 m).
• Conformity: CE Conformity mark.
• Weight: 7.0 kg.
• Energy Efficiency: Contains light sources of energy efficiency class D.

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.

Technical Specifications

Lamp Details:

• Module connected wattage: 41.5 W
• Luminaire connected wattage: 45 W
• Rated temperature: ta=25 °C
• Service life criteria: 50000 h/L70

Module Details (Model 84860 K3):

• Module designation: LED-0780/830
• Colour temperature: 3000 K
• Colour rendering index: CRI > 80
• Module luminous flux: 6905 lm
• Luminaire luminous flux*: 5100 lm (*preliminary data)
• Luminaire luminous efficiency*: 113.3 lm/W (*preliminary data)

Light Technique

Features a narrow beam light distribution with a half beam angle of 24°.

When designing underwater lighting, consider that water absorbs light based on its clarity. This absorption reduces lighting intensity and brightness compared to operation in air.

Overvoltage Protection

The electronic components installed in the luminaire are protected against overvoltage in accordance with DIN EN 61547.

For additional protection against transients, separate overvoltage protection components are recommended. These can be found on the BEGA website at www.bega.com.

Installation

The floodlight must only be operated underwater in non-accessible ponds or pools.

The electrical connection must be made outside the water, with the appropriate safety class and protection class applied to the floodlight connection line.

Ensure correct wiring: Connect mains supply to the brown (L), blue (N), and green-yellow (earth) wires. Control cables connect via the two DALI-marked wires. If DALI wires are not connected, the luminaire operates at full light output.

Mounting: Pre-mount two suitable mounting screws for the installation surface, spaced 120mm apart. Insert the floodlight bracket into the mounting screws and fasten securely.

Adjustment: To adjust the beam direction, loosen the hexagon socket screws (wrench size 6 mm) and set the desired angle. Tighten the hexagon socket screws evenly.

Cleaning and Maintenance

Clean the luminaire regularly with solvent-free cleansers to remove dirt and deposits. Do not use high-pressure cleaners.

To prevent surface damage, the water must have a neutral pH value and be free from substances that cause metal corrosion.

Replacement Parts and Accessories

Important Note: Do not remove the desiccant bag located inside the luminaire housing. It is essential for absorbing residual moisture.

Replacing LED Module / Power Supply Unit

The LED module designation is noted on a label within the luminaire. BEGA replacement modules match the original light colour and output.

Replacement can be performed by qualified persons using standard tools. Avoid direct contact between hands and the LED light-emitting surface during replacement.

Procedure:

• Disconnect the system from the power supply.
• Loosen the floodlight bracket fastening screws at the installation base and remove the bracket backwards from the screws.
• Lift the floodlight above the water level and clean it (refer to Cleaning & Maintenance section).
• Open the floodlight: Loosen the six hexagon socket screws (SW 4) on the back and remove the trim ring.
• Remove the gasket, glass, and reflector.
• Replace the LED module (follow the LED module's installation instructions) or the power supply unit (loosen the five hexagon socket screws (SW 4) on the connection housing and lift off the housing).
• Check gaskets and replace if necessary. Ensure the floodlight housing is completely clean and absolutely dry.
• Reassemble: Replace the connection housing and fasten screws evenly. Insert the reflector, glass, and gasket. Replace the trim ring and tighten screws evenly in a crosswise pattern. Tightening torque: 3.7 Nm.
• Perform a function test outside the water.
• Insert the floodlight with the bracket into the mounting screws and fasten it.

Accessories

71 265 Mounting plate: A mounting plate for positioning the underwater floodlight when it is not bolted to the substrate by the installer. Refer to separate instructions for use.

Spare Parts

• Spare glass: 14001588
• LED power supply unit: DEV-0270/1200i
• LED module 3000 K: LED-0780/830
• Reflector: 76001598
• Gasket glass: 83002115
• Gasket housing: 83002199