T.I.P. WDF 20000 Manuel D'utilisation Et D'entretien page 10

if the sponge rises since the grid located on the cover will keep it in the correct working position.
- Close the cover.
- Switch on the UV-C sterilizer and check that the lamp is working through the opaque glass screen.
WARNING:
- the filter must always be positioned above the pond's water level.
- place the filter horizontally (to prevent water overflowing).
- to encourage water to leave the filter, the outlet pipe must never be higher than the level of the connection hole
it comes from.
- if there is any overflowing, make sure that the wet & dry screen and the filter in the discharge chamber are
clean.
At this point, your filter is ready to start work.
MAINTENANCE:
Cleaning the pump:
- always disconnect the power supply before performing any maintenance work
- make sure the pump's protective housing is not entirely clogged by leaves or other debris. If it is, clean the housing.
- remove the pump from the protective housing; turn the impeller cover anticlockwise; remove the rotor, being careful
not to lose the shock absorbers or O-ring; rinse under running water and check for wear - turn the rotor while holding
the shaft still and make sure rotation is smooth. Fit everything back together in the reverse order, being extra careful to
position the components correctly.
Cleaning the UV-C sterilizer:
Always disconnect the power supply before performing any maintenance work.
If you notice an increase in algae formation and/or see that limescale is increasing, you will need to check that the UV-C
unit is working properly. To assure peak efficiency, the UV-C lamp must be replaced ever 5000 hours of operation.
Unscrew the cover of the case with the lamp inside and replace the lamp where necessary.
Carefully remove the protective quartz container. To do this, use a wide screwdriver, a coin or similar object, insert the
tool in one of the notches that you can see at the end of the case's threading and lever up the case gently.
Clean the case and protective quartz container carefully using water and a soft rag. Remove any limescale from the quartz
tube with descaling solutions. Check the quartz tube for damage.
Reassemble in the reverse order, making sure you position the O-rings correctly.
Where necessary, grease O-rings with Vaseline.
See page 1 (1a, 2a)
Replacing the UV-C lamp:
Always disconnect the power supply before performing any maintenance work.
Unscrew the cover of the case with the lamp inside, remove the UV-C lamp and replace it with the new one. Reassemble
in the reverse order, making sure you position the O-rings correctly. Where necessary, grease O-rings with Vaseline.
The lamp must be changed by qualified personnel only.
Should you notice the quality of the water deteriorating, a considerable reduction in water flow or water coming out of
the cover, proceed as follows:
- Water inlet chamber: the coarser debris settles on the bottom of the chamber.
It must be removed using the backwash valve, proceeding as follows: with the pump still running, open the backwash
valve for about ten seconds, then switch the pump off until the filter drains completely.
Switch the pump back on - the pump removes remaining debris from the bottom - and allow water to flow back through
the backwash valve until the water is clear, at which point you can close the valve.
If the valve is clogged, remove dirt inside using a suitable tool.
- Mechanical filtering with sponges: remove the sponges from the filter and rinse them under running water. Fit them back
in their housing, doing your best to keep
them in the correct horizontal position. In the two-sponge version, the thinner sponge must always be placed on top.
- Wet & dry perforated screen: the screen's holes must be kept free of debris and filaments at all times to allow water to
flow through normally.
- Biological filter: bioballs must be rinsed whenever there is an excessive build-up of scale. Make sure the outlet grid is
unobstructed.
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