06/02/2024
Ensure a Longer Lifespan
An LED High Bay is designed for long-term use in warehouses, factory halls and other high spaces. However, the lifespan is not determined solely by the quality of the fixture – maintenance and the LB factor also play a major role. The LB factor indicates how well a LED fixture maintains its light output over time. With regular maintenance and understanding this factor, you ensure durable, energy-efficient lighting and a safe working environment.
What does the LB factor mean?
The LB factor consists of two components:
L stands for lumen maintenance. This indicates what percentage of the original light output (lumens) the LED still delivers after a certain number of operating hours.
B stands for reliability and indicates what percentage of fixtures will perform below this level.
Example: A specification of L80B20 at 50,000 hours means that 80% of the original light output is retained and that only 20% of LED High Bays will perform below that level.
The higher the L-value and the lower the B-value, the more consistent the light quality.
Why maintenance remains essential
LED High Bays are the backbone of modern warehouse and industrial hall lighting. They are energy-efficient, but not maintenance-free. Regular cleaning prevents dust and grease from accumulating on the lens or heat sink. This is important for:
Maintaining light output: Dirt can cause up to 20% light loss.
Longer lifespan: A clean fixture stays cooler, reducing electronic wear.
Safety: Well-lit workspaces meet standards and reduce risks.
How often should you maintain High Bays?
The maintenance frequency depends on the environment. Dusty or greasy spaces, such as production lines or garages, require more frequent maintenance than clean storage areas.
Signs that maintenance is urgently needed
Reduced light output or uneven illumination
Flickering light or delayed start-up
Excessive dust buildup on the lens or heat sink
Loose mounts or cables
Recommended maintenance frequency per environment type
Environment type | Recommended frequency | Notes |
Warehouse (dry, low-dust) | 1× per year | Cleaning and visual inspection |
Production hall (dust/grease) | 2–3× per year | Extra focus on heat sinks |
Sports hall or storage building | 1–2× per year | Check lenses and mounting systems |
Food industry / humid environments | 3–4× per year | Cleaning + seal inspection |
Step-by-step guide: Cleaning and inspecting LED High Bays
A proper maintenance plan does not need to be complicated. With these practical steps, you keep your LED High Bays in top condition:
1. Ensure power is disconnected
Switch off the power before starting. This prevents short circuits or damage.
2. Clean the lens or cover
Use a soft, lint-free cloth and a mild cleaning agent. Avoid aggressive substances that could damage the plastic.
3. Check lenses, cables and clamps
Look for cracks, corrosion or loose connections.
4. Inspect mounting and safety cable
Check whether chains, brackets and fixtures are still securely fastened and balanced.
5. Reinstallation
Reattach the fixture and check the clamping force and position.
