Viega Grundfix Plus Instructions For Use Manual page 34

3.6.2 Maintenance
Grundfix Plus Control backflow trap type 3
NOTICE!
To ensure safe operation, carry out maintenance of the
system twice a year.
Requirements:
Maintenance is not possible in battery operation as the power loss is
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too great.
Maintenance must be carried out by a professional.
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Only use original parts for repair, maintenance and extension.
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Replace defective components, do not repair.
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When using cameras and cleaning devices (cleaning spiral, high-
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pressure cleaner), protect the backflow trap against mechanical
damage.
Only begin maintenance after ensuring that no backflow situation
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exists and the drainage objects in front of the backflow trap are not
used.
Handling
34