the O ring and push the unit head carefully into the housing while exerting light pressure (D5). Ensure that the
tenons at the housing engage in the grooves of the bayonet closure. Turn the unit head clockwise up to the stop
while applying slight pressure, so that the two arrows on the unit head and the housing meet (D6).
Changing the UVC lamp (D3)
For an optimum filter performance, we recommend to replace the UVC lamp after approx. 8000 operating hours.
Important! Only use lamps the designation and rating of which match the information on the type plate.
Pull out and replace the UVC lamp.
Storage/Over-wintering
Put the unit out of operation when freezing temperatures are to be expected. Drain and thoroughly clean the
flowthrough filter, check for damage. Remove, clean, dry and store all filters in a frostfree environment. Do not
immerse the power plug in the water! Cover the filter container such that the ingress of rain water is excluded.
Drain all hoses, pipes and connections as far as possible. Ensure that the storage place is inaccessible to
children.
Wear parts
The UVC lamp, the quartz glass and the foam filters are wear parts and are excluded from the warranty.
Disposal
Dispose of the unit in accordance with the national legal regulations. The UVC lamp needs special disposal.
Ask your specialist dealer.
Problem solving
Problem
The unit performance
is not satisfactory
UVC lamp display is not lit
No water flowing
through filter
Pond keeping information
If you have any questions regarding your pond or water garden contact Tetra at: Tetra (UK) Ltd, P.O. Box 271,
Southampton, SO18 3ZX or visit our Web Site on http:\\www.tetra.net
Clear water guarantee
Provided that this Tetra filter is used in combination with a suitable TetraPond pump, we guarantee that you will
obtain clear water in your pond for a period of two years from the date of purchase so that plants and fish are
visible to a depth of max. 0.5 m.
Prerequisite for the guarantee is the correct use and maintenance of the filter (in accordance with the
instructions for use).
Cause
Unit has been in operation only for
a short time
Excessive organic matter in pond
Excessive fish and animal population
Foam filters dirty
Pump housing is dirty
Pump impeller unit blocked
Quartz glass tube dirty
UVC lamp capacity exhausted
Power supply of UVC not connected
UVC lamp defective
Connection defective
UVC overheated
Pump power supply not connected
Pond inlet blocked
Remedy
The complete biological cleaning effect is only
achieved after several weeks
Remove algae, silt and leaves from the pond, perform
a partial water change
Guide value: approx. 50 cm fish length in 1 m³ pond water
Clean filters
Clean pump filter housing
Clean pump
Remove UVC and clean quartz glass
Replace the lamp after approx. 8,000 operating hours
Connect UVC power plug
Replace the UVC lamp
Check power supply
UVC automatically switches on when cooled down
Connect pump power supply
Clean pond inlet
GB
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