Do I have to replace LED diodes?

Probably not. It is not really practical since the assembly process for the individual diode requires precision control of temperature and excellent process cleanliness.

A more important question is to consider the arrangement of LEDs within the fixture. Just like the old Christmas tree lights where one bad bulb made and all of the lights in the string turn off? If all the LEDS are connected in series, one could get the same effect.

If a fixture is rated for 100,000 hours, how long will it last?

The length of time a fixture can last is based on how long a fixture is illuminated per day.

Based on hours of operation, 100,000 hours is:

  • 24 hours per day  = 11.4 years
  • 18 hours per day  = 14.8 years
  • 12 hours per day  = 22.8 years
  • 8 hours per day  = 34.2 years
What are the advantages of using LED lights?

With a correctly designed fixture:

  • LEDs yield very high energy-efficiency, ruggedness, and superior life, as compared to other light sources;
  • Required maintenance on such correctly designed fixtures is greatly reduced;
  • Energy savings and maintenance savings combine to yield an overall reduction in cost of ownership, as compared to other light sources; and
  • LED lights are “green” in that they utilize no hazardous materials. Mercury is a bi-product of a significant number of non LED lights on the market today. Disposal of such fixtures has become a significant environmental problem.
What happens if LED fixtures fail?

Most of the fixtures now being offered for sale must be removed from service and repaired by the manufacturer, or (more than likely) discarded. Our fixtures are made with the intent of preserving the value of the customer’s investment over the very long term.

Patented Rapid Change Capability offers unparalleled ability for the customer to be able to remove individual components, replace failed components, and put the fixture back in service in rapid fashion. We also provides failure analysis of fixture components to determine the cause of failure and allow design improvement to occur based on the data collected. Repair kits, tool kits, and repair training classes are offered to customers who wish to be responsible for maintaining their light fixtures without returning them to the factory.

What is a LED?

LED is short for Light-Emitting Diode. An LED is a semiconductor diode that emits light when current is passed through it. LEDs have been used since the 1970’s as indicator lights on electronic products. Recently the efficiency, reliability, and light output of LEDs have improved to the point where they are not only useful for general lighting applications but are becoming a long term and green alternative to most other forms of lighting applications.

Why is the life span of a LED measured as "lumen depreciation"?

The LED doesn’t burn out in the conventional sense. To have a way of describing what happens, product life is measured as lumen depreciation. The life span of an LED is much longer than that of incandescent, fluorescent or HID lamps. Fluorescent or HID light sources also show a reduction in light output before they fail completely.

The concept of lumen depreciation is not new. The Illuminating Engineering Society of North America (IES) current standard for calculating the life of an LED is the operating time at which the LED light output is reduced by 30%.

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