When installing the underground tanks of the Columbus series as collection tanks without a run off
system, all of the above assembly and installation instructions must be observed and followed and only
the connection/installation of the run off and the protective pipes are omitted.
Odour trap: In addition to the rubber seal on the telescopic attachment there is also an optional rubber
seal for the double walled PE cover which prevents odour escaping (Type - No.: 790079).
The entire system must be checked for leaks, cleanliness and stability at least every three months.
The entire system should be serviced at intervals of approx. 5 years. In this case, all parts of the system
must be cleaned and their function checked. Servicing should be carried out as follows:
Drain the tank completely
Remove any solidified sludge, dirt etc with a non-metallic scraper.
Clean surfaces and internal parts with water
Remove all dirt from the tank
Check that all internal parts are firmly seated
Otto Graf GmbH – Carl-Zeiss-Str. 2-6 – DE-79331 Teningen – Tel.: +49 7641 589-0 – Fax: +49 7641 589-50
GRAF Distribution S.A.R.L – 45, route d´Ernolsheim – FR-67120 Dachstein Gare – Tél.:+33 388 49-7310 – Fax: +33 388 49-3280
GRAF Iberica Tecnología del Plástico S.L. – Marquès Caldes de Montbui, 114 – ES-17003 Girona – Tel.: +34 972 913767 – Fax: +34 972 913766
GRAF UK Ltd – Target House – Thorpe Way Ind. Estate – Banbury – Oxfordshire – UK-OX16 4SP – Tel.: +44 1608 661-500 – Fax: + 44 1608 665-466
info@garantia.eu
www.garantia.eu
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Installation as a collection pit
8.
Inspection and servicing
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