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Dulcodes UV-Desinfektionsanlage
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Function
The water to be disinfected flows through the stainless steel radiation chamber past the UV
lamps. The UV radiation reliably kills germs and micro organisms.
Operating with high efficiency, the UV low-pressure UV lamps used produce UV-C radiation of
the wave length 254 nm which is particularly effective for disinfection and sterilisation purposes.
The UV lamps are located in protective tubes made from high-grade quartz with high UV
permeability.
The compact design of the radiation chamber, the optimised flow as well as the fitted turbulators
ensure uniform radiation of the entire flow of water.
In connection with the UV-C sensor, a control system monitors the UV system. It is installed in
the control cabinet for larger UV disinfection systems and mounted on a panel together with the
ballast for smaller systems..
Normal operation
The UV lamps are ignited after switching on the Dulcodes UV disinfection system. In multi-lamp
systems with a data bus to the ballast units, the bus is activated prior to ignition. This procedure
can take several seconds depending on the size of the system.
After ignition, the lamps require several minutes until they reach operating temperature.
The UV-C sensor monitors the UV lamps: The flushing valve for start-up flushing opens as soon
as the UV-C output exceeds the safety threshold.
The flushing valve also opens if the safety threshold is not reached within the maximum
permissible warm-up time. If the safety threshold is still not reached within the maximum clear
flushing time, the control will shut down the UV disinfection system and assume flow mode.
The shut-off valve opens after start-up flushing.
The UV system assumes normal operation.
Normal operation
The UV-C sensor still monitors the UV-C output during normal operation:
UV-C output drops below the warning threshold:
A warning is triggered.
UV-C output drops below the safety threshold:
The shut-off valve closes and the flushing valve opens.
If the safety threshold is no longer exceeded within the maximum clear flushing time, the control
will shut down the UV disinfection system and assume flow mode.
All UV lamps are monitored to ensure they are operating correctly. If a lamp fails, the shut-off
valve closes, the control shuts down the UV disinfection system and assumes flow mode.
Intermittent flushing
When intermittent flushing mode is active, after the maximum downtime, the flushing valve opens
for the intermittent flushing time.
Switching off
When the UV disinfection system is switched off, the shut-off valve closes and the UV lamps are
switched off. If an afterglow period is required for the lamps, the lamps will be switched off after
the afterglow period has elapsed.
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Control
Version
Since the electronics and software are subject to a continuous improvement process, the version
number was introduced as a means of identification. This number must be specified in the event
of complaints. The number can be shown on the display.
Presettings (defaults
The control of the Dulcodes UV disinfection system is preset on leaving the factory. With the
exception of sensor calibration, it is therefore not necessary to change the settings for many
applications.
IMPORTANT!
The settings can be changed only with the UV system switched off. Exception: Sensor
calibration and lamp current setting.
Function / Control
BA_DS_009_10_06_GB.p65
20.10.2006, 7:31 Uhr
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