Technical Design-in Guide SLE G6 | 12-2018 | 2.1 | en
Mechanical Aspects
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Protection measures for the glob top material
The following guidelines must be observed to avoid damage to the glob-top:
Example of damaged encapsulant material, recognizable by the change of the chromaticity coordinates:
Image
Description
powerLED P211, original
powerLED P211, damaged by dissolver waste gas
Protection measures in regards to sealing
The points above also apply to chemicals used for sealing luminaire casings. If however the LED module is not installed in the
luminaire until after the sealing compound has been completely cured (see relevant material information) the above points can be
ignored.
If the LED modules have already been installed in the luminaire, possible damage to the encapsulant can be reduced to a minimum by
ensuring adequate spacing (>10 cm) and ventilation (open casing and air circulation, extraction / fan) during the curing process.
Protection measures in regards to cementing
To avoid damaging the LED modules you must not use any tools or exert any pressure on the electronic components or the
encapsulant.
Cleaning the LED module
Make sure that the chemicals used in LED applications are not solvent-based, condensation crosslinked or acetate crosslinked
(acetic acid). These give rise to reagents (e.g. solvent vapors, acetic acid) that may damage LED modules or the encapsulant.
This applies to chemicals that are used not in the immediate vicinity of the modules (e.g. seals) and also to chemicals that
come into direct contact with the modules (e.g. insulating coatings, adhesives).
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To ascertain the chemicals used and the type of cross linking a technical data sheet containing a list of substances must be
requested from the manufacturer.
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If glass or Plexiglas shields are used make sure that pressure is not exerted on the encapsulant.
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Only touch the LED modules at the edges
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CAUTION!
It is not permitted to clean LED modules during operation. It is necessary to disconnect the power supply. This means for example
removing the spotlight from the supply rail only after that it is allowed to clean the module.