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1.
General notes
1.1
Safety
The relevant accident prevention regulations according to BGV C22 must be observed during all work.
Particularly when walking on the tanks, a 2nd person is required to secure the tank.
The relevant regulations and standards must additionally be taken into consideration during installation,
assembly, servicing, repair, etc. Relevant notes can be found in the corresponding sections of these
instructions.
During all work on the system or parts of the system, the entire system must always be rendered
inoperable and secured to prevent unauthorised reactivation.
The tank must be thoroughly cleaned prior to commissioning, because transport and storage may result
in dirt or rainwater entering the container.
Except in the event of work carried out in the tank, the cover of the tank must always be kept sealed, as
this otherwise constitutes a maximum risk of accident. The rain protection installed on delivery is merely
transportation packaging. It cannot be walked on and is not child-proof; it must be replaced with a suitable
cover immediately following delivery (drinking water telescopic dome shaft with corresponding cover)!
Only original GRAF covers or covers approved in writing by GRAF must be used.
GRAF offers an extensive range of accessories, all of which are designed to match each other and which
can be extended to form complete systems. The use of accessories that have not been approved by
GRAF results in the exclusion of the warranty/guarantee.
2.1 GRAF drinking water underground reservoir, Diamond series
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The tanks in the Diamond series may only be installed with the drinking water telescopic dome shaft
in green areas which are not driven over by vehicles. If installing next to areas which are driven over
by vehicles, see page 6 point 4.2.3
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The telescopic cover for pedestrian loading must not be subjected to short-term loading of more than
150 kg or long-term loading of more than 50 kg.
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In the case of groundwater or a position on a slope, special installation guidelines must be followed.
(See page 5)
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The soil cover must? be at least 600 mm and no more than 1000 mm above the tank shoulder.
2.
Installation conditions
