The More Lamps The Less Performance
Does having more lamps mean better protection? Absolutely not!
Always aim at getting the required UV dose with the least amount of lamps. Why?
- The more lamps in a given UV system, the less ability to monitor each individual UV lamp and ensure proper function of the UV system.
- If one lamp is off or too weak, the entire UV system will fail to deliver the required UV dose, and "escape routes" are easily formed. As each lamp treats only a fraction of the passing water, the rest of the lamps in the UV system will not be able to compensate for the "escape route", caused by the deficient lamp.
- More lamps mean more maintenance, more quartz-sleeves to clean, and inevitably more shut-down time.
Control and monitoring issues in UV systems using a single LSM to monitor multiple UV lamps
Claims that a multi-lamp UV system can provide the UV dose, even with one or two lamps down, contradict the system's validation scope and are erroneous and misleading. Only some MP UV systems, in which each lamp treats 100% of the water volume, can in some cases guaranty this feature. With LP systems, where each lamp treats only a fraction of the flow, "escape-routes" are formed and the disinfection performance is compromised.
Read more about this topic in our UV blog.