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2.
General Principles
GENERAL PRINCIPLES
The UV disinfections have been planned specially for destroying harmful bacteria and viruses
present in your water.
Their working is based on a physical principle which is a warrant of security: the output of ultra-
violet irradiation.
The UV light given out by special mercury fumes lamps (UV-C rays
λ
= 254nm) is highly
germicidal because it interacts with DNA and RNA, at a molecular level. The deep bio-structural
disorder caused by such irradiation interferes with the development and the ability of
reproduction of every kind of micro-organism, making it harmless.
Generally it is better to mount a pre-filter before the UV disinfection system, in this way the
impurities of every nature and consistence are kept.
This system comes to be necessary if we want to have a high degree of disinfection, infact the
non-filtration and removal of suspended particles in the water has, as a consequence, a decrease
of the disinfection system's efficiency.
If the water to be treated contains sulphydric acid or more than 0.3 p.p.m. of iron or filtrable
solids, once passed through the disinfection system, it leaves a residual sediment on the quartz
sleeve, which, therefore, must be periodically cleaned (the frequency depends on the quantity and
quality of water treated).
The disinfection equipment is constituted by different electronical and electromechanical
components assembled in such a way to realize effectively the disinfection process, giving a
bacteriologically pure water.
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GENERAL DIRECTIONS
According to the European rules EN 60204-1 (safety of the set-up off the electrical equipment-
general rules) the low tension electrical instruments (rule 2006/95/CE) must be connected to a
current-tap provided with grounding
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SAFETY DIRECTIONS
The light of ultra-violet lamps can cause serious burns to unprotected skin and eyes, therefore it is
recommended not to connect it to the current tap without having before ensured the UV lamp in
its housing and inserted the PVC cover.
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INDICATIONS FOR THE DISPOSAL
We remind that, according to what is fixed by D.L.25 july 2005,
№
151 “Accomplishment of
directives 2002/CE, 2002/96/CE and 2003/108/CE, concerning the reduction of the use of
dangerous substances in electric and electronic equipments, and the disposal of waste” both
mercury vapours lamps and electrical panels, when no more used, must be considered as special
waste, and in the same way disposed of.
To do that, it is possible to address to specialized centres for the recovery of dangerous materials,
or to contact directly our technical department.
