Tip 1 — Quality beats price
A €50 LED luminaire and a €250 one often have the same datasheet output — but rarely the same service life. The difference lies in the driver, in heat dissipation and LED binning. Branded products declare service life with a population value (e.g. L80B10 at 50,000 h); no-name products often only marketing figures without a B-value.
Practical test before a large order: check the datasheet for both an L-value AND a B-value. If not stated — stay away.
Tip 2 — Match the form factor to the environment
An IP20 luminaire in a dust-filled joinery does not last two years. Choose by environment:
- Dry rooms: IP20 is enough
- Workshop with dust / sawdust: IP54 minimum
- CNC with coolant aerosol: IP67, ideally IP69K
- Food / pharma with wash-down: IP69K + stainless steel
- Cold storage / freezer chambers: dedicated driver with extended temperature range
An over-specified IP rating costs more — but pays off in service life.
Tip 3 — Position and heat dissipation
LEDs age temperature-dependently. Rule of thumb: every 10 °C higher junction temperature halves the service life. When mounting:
- No luminaires directly above heat sources, weld seams or hot machine components
- Maintain minimum distance to the ceiling per datasheet (typically ≥ 5 cm on large high-bay luminaires)
- Do not obstruct the passive heat dissipation area on recessed luminaires
- For ambient temperatures permanently > 40 °C, choose luminaires with extended Tj range
Tip 4 — Stable power supply
Industrial mains are rarely ideal. Voltage spikes from frequency inverters, contactors or welders damage LED drivers. Protection:
- Surge protection (SPD) in the feed line — Class III per IEC 61643 is standard for industrial luminaires
- EMC filter on installations with high-power VFDs nearby
- Separate sensitive circuits — do not run lighting on the same transformer as large motors
- Stable 24 V rails for DC luminaires — supply with active load sharing, not linear regulators
Tip 5 — Clean regularly
A soiled light cover can transmit 20–40 % less light after one year. The driver compensates and works harder — shortening service life.
Cleaning intervals by environment:
- Office / clean: every 24 months
- Workshop: every 12 months
- Welding / dust: every 6 months
- Food / pharma: after each wash-down (daily / weekly)
Important: no aggressive solvents on PMMA optics — plastic clouds. Get material-specific cleaning instructions from the manufacturer.
Tip 6 — Repair instead of replace
If only the driver fails, the LED source is usually still fine — and vice versa. Modular branded luminaires are repairable; no-name products are often glued as one piece and can only be replaced as a whole.
Check before buying:
- Are spare parts available (driver, LED module, optic, gasket)?
- How long does the manufacturer guarantee spare-part supply? Branded suppliers often deliver 10+ years.
- Is there a repair service?
A driver replacement on a €200 branded spotlight costs about €30. A €50 no-name luminaire is replaced wholesale — and the waste ends up as hazardous material.