© by WilTec Wildanger Technik GmbH Seite 13
http://www.WilTec.de
http://www.aoyue.eu Februar 2020 Version 2
http://www.teichtip.de
Changing the light tube
If the algae proliferate, it is necessary to check the correct the functioning of the UV-C lamp.
You recognise on the UV-indicator if the lamp lights at all. Change it every season.For model CPF-2500-
5000-10000-15000-20000-30000 the four screws on the cover lid of the filter have to be loos-
ened in order to remove / replace the UV-unit.
CPF-180-250 CPF-2500-5000-10000-15000-20000-30000
Before changing the UV-Lamp disconnect the pump. Release the 8 screws of the UV-unit from the filter
lid. Carefully remove the UV-lamp. After the UV-unit has been cooled down and dried up grab the base
of the light tube (not the glass!) with a soft cloth and pull it cautiously out of its socket. Grab the base of
the new light tube with a soft cloth and delicately insert it in the socket. Now the quartz glass inside
which the light bulb is placed must be cleaned. For this purpose the lime has to be dissolved under
heating with appropriate agents (coffee machine or kettle descaler like citric acid). After this rinse the
quartz glass from residues remaining from the cleaning agents. After rinsing all parts are reassembled
in reverse order. The pump and the device are connected again to the power supply.
The wear parts (Filter materials, light tubes, quartz sleeves, seals) are usually by WilTec Wildanger
Technik GmbH www.wiltec.info in stock available.
WARNING:
• For all maintenance work the UVC has to be disconnected from the power supply!
• The filter can be put into operation only if the UVC is FULLY assembled!
• Never tinker with the running UVC lamp!
• The UVC must NOT be carried by the cable!
• Always place the UVC outside the pond (not in the water)!
• Remove the UVC by frosty weather!
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