Ensuring efficacy of the UVC solution: replacing UVC lamps

Each UV-C disinfection application consists of one or more high-output ultraviolet lamps,
as well as a "system" to ensure correct installation in each specific application.

The UVC system requires no specific maintenance, except for the replacement of UVC lamps whose effect on microbial deactivation changes over time.
In fact, the UV-C dose produced by each lamp tends to decrease over time until it is completely exhausted.

After two years of continuous operation (or one year in the case of lamps switched on and off daily)
the UV-C dose falls below the minimum threshold to guarantee the effectiveness of each lamp in its application, and must be replaced.
Some UVC systems are equipped with an 'hour counter' (often purchased separately) that indicates the total hours of operation since first installation.
After 18,000 hours of continuous operation or 9,000 hours of alternating operation (daily switch on and off) the lamps need to be replaced.

Always purchase original Light Progress replacement lamps to maintain the guaranteed effectiveness of Light Progress products.
Replacing the lamps with non-original spare parts:
  • could damage the entire UVC system
  • might not guarantee the expected level of disinfection and performance of the UVC system
  • could result in shorter lamp life over time compared to the use of original lamps
In addition, original Light Progress lamps can be coated with the special UVLON protection,
which guarantees greater safety in the event of accidental lamp breakage during use.

Replacement lamps are available from our official dealer network, please contact us to find your nearest dealer.


Ultraviolet rays are electromagnetic waves which are part of light. Electromagnetic waves are divided into three main wavelength bands, expressed in nanometers, nm: Ultraviolet rays (UV) 100-400 nm Visible rays (light) 400-700 nm Infrared rays (IR) 700-800,000 nm UV rays are in turn identified in three bands:

  • UV-A (315-400 nm) with tanning properties;
  • UV-B (280-315 nm) con proprietà terapeutiche e di sintesi della vitamina "D";
  • UV-C (100-280 nm) with germicidal properties.

UV-C rays (100-280 nm) have a strong germicidal effect and reach their maximum efficacy at the 265 nm wavelength. The germicidal effect of UV-C radiation covers bacteria, viruses, spores, fungi, moulds and mites; this is mainly due to the destructive effect of the UV-C rays on their DNA, which damage their reproductive system and prevent them from replicating.

Bacteria, Viruses, Spores, Fungi, Mould, and Mites are all sensitive to, and can therefore be eliminated with, UV-C light. Mircrobes cannot acquire resistance to UV-C light, unlike that which occurs using chemical disinfectants and antibiotics. UV rays are ecological. Polluting the environment is inevitable using normal disinfectants. Directly inhaling the vapours, or swallowing food products contaminated by any contact with said chemical disinfectants, can also give rise to a number of serious risks. In cases where chemical disinfectants cannot be eliminated (food, pharmaceutical, healthcare industries, etc.), using ultraviolet rays for disinfection allows a reduction in their use, with considerable economic savings and greater care for the environment, while maintaining and almost always improving the level of disinfection. UV-C light devices can be installed in environments and on machinery and be programmed to maintain the same level of disinfection day and night, guaranteeing ideal hygiene conditions, without highs and lows. On the contrary, chemical disinfectants are effective only during their actual use. Using LIGHT PROGRESS equipped luminaires, operating costs are negligible; it could be said that “LIGHT PROGRESS” UV-C systems do not require maintenance except for the normal replacement of the lamps. The cost/benefit ratio is considered excellent; the devices are both powerful and long-lasting. Hence the elimination of germs using UV-C technology is low-cost and highly effective compared to (or in combination with) other systems.

UV-C really does work when applied correctly and with the necessary precautions. The difference between a quality project and an unsuccessful application is in-depth knowledge and experience gained over time. Since 1987, Light Progress has been carrying out successful projects all over the world and has acquired a clientele of major companies in all sectors that require verified hygienic conditions to produce quality products and services.