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Dulcodes UV-Desinfektionsanlage
WARNING!
• Replace the UV-C lamps after the maximum permissible useful life at the latest!
Otherwise, operational reliability of the UV disinfection system can no longer be
guaranteed.
• The maximum permissible useful life is defined in the datasheet provided with the
UV disinfection system.
• Disconnect the power plug or switch off the mains switch before performing any
maintenance/servicing work.
• Depressurise radiation chamber before performing maintenance work.
• UV-C radiation is harmful to the eyes and skin!
Place the UV lamps into operation only in their installed state!
Install the UV disinfection system in accordance with regulations and instructions before
starting up the UV lamps!
• Soiled filter mats of the fan and of the air outlet filter can cause overheating and
irreparable damage to the control cabinet.
7.1
Cleaning Lamp Protective Tubes
Iron, manganese or lime deposits can form on the lamp protective tubes during operation. Since
these deposits absorb UV radiation, they should be removed at regular intervals.
IMPORTANT!
The protective tubes should be cleaned at the latest when the sensor signal drops below
the warning threshold provided this is not due to other reasons such as lamp ageing or
substantial deterioration in UV transmission.
In many UV disinfection systems, it is sufficient to clean the lamp protective tubes once a year as
part of the lamp replacement procedure. Cleaning every one or two months may be necessary in
UV disinfection systems that are used for wastewater disinfection.
All protective tubes in multi-lamp systems must be cleaned.
The lamp protective tubes should be removed to be cleaned or they can be cleaned by filling the
radiation chamber with a cleaning solution. Acids are particularly suitable for cleaning purposes
such as diluted phosphoric acid, citric acid or diluted nitric acid.
CAUTION!
• Do not use acids that cause corrosion or stress corrosion cracking as hydrochloric acid!
• Observe the safety datasheet of the selected cleaning agent!
• Wear the necessary protective clothing when cleaning the system (safety goggles,
protective gloves ...)!
• Make sure that no cleaning solution enters the lamp protective tubes!
• Take particular care when cleaning UV disinfection systems to ensure that no cleaning
solution enters the piping system! This requirement applies particularly to drinking water
disinfection and similar applications.
NOTE!
Dispose of the used cleaning solution in accordance with valid guidelines and regulations!
Variant 1: Removing
Systems without connector on lamp cover
UV lamp protective tubes
Switch off UV disinfection system with the START/STOP button
Switch off master switch or disconnect power plug
Close shut-off valves upstream and downstream of the radiation chamber
Open water drain plug and vent screw, empty radiation chamber
Release knurled nut on retaining fixture for UV lamp protective tube by hand
Pull out UV lamp cover until the connector of the connection cable can be disconnected from
the UV lamp
Completely pull out UV lamp and place to one side
Use C-wrench provided to slacken off retaining fixture for protective tube
Remove retaining fixtures for protective tubes by turning out of the radiation chamber
Pull out UV lamp protective tube
Remove O-ring from lamp protective tube
Wash lamp protective tube with cleaning solution or dip in cleaning solution until the deposits
have been removed completely
Rinse protective tube with clear water and dry with a soft cloth
Maintenance
BA_DS_009_10_06_GB.p65
20.10.2006, 7:31 Uhr
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