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Otto Graf GmbH – Carl-Zeiss-Str. 2-6 – D-79331 Teningen – Tel.: +49 (0)7641/589-0 – Fax: +49 (0)7641/589-50
7. Inspection and Maintenance
Inspect the entire system at least every three months for sealing, cleanliness and stability.
Maintenance of the entire system is required in intervals of around five years. This includes cleaning all
system components and controlling their function. Proceed as follows with maintenance:
Completely empty the tank.
Control all built-in parts for firm seating.
4rain - a trademark of the Otto Graf GmbH
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