Insertion And Filling; Routing Connections; Assembling - Telescopic Dome Shaft; Drinking Water Telescopic Dome Shaft - Graf Diamant Notice De Montage Et D'entretien

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4. Installation and assembly

4.3 Insertion and filling

The tanks should be brought into the prepared trench with a suitable device without any jolts.
To avoid distortion, before the surround is filled the tank should be filled 1/3 full with water. The surround
(round gravel, max. grain 8/16 acc. to DIN 4226-1) is then added in layers of max. 30 cm up to 1/3 of the
tank and compressed. You should then fill the tank until it is 2/3 full and fill the trench with layers of max. 30
cm until it is 2/3 full, etc. The individual layers must be well compressed with a hand tamper. Be careful to
avoid damaging the tank when compressing the gravel. Mechanical compression machines must never be
used. The surround must be at least 50 cm wide. Filling with round gravel must be undertaken quickly
and completed in one day. Otherwise filling water may cause excess loads in the event of heavy rain.

4.4 Routing connections

All connections should be fitted on the flat surfaces of the tank dome. The holes needed can be produced
with a circular cutter or hole saw. The drip drain should be fitted at the lowest point of the tank, the
extraction opening around 10 cm higher.
Attention: Please only use food safe materials (e.g. PE threaded connections) for the assembly of the
connections).
The telescopic dome shaft allows the tank to be adapted in a continuously variable manner to terrain
surfaces with between 700 mm and 1000 mm of soil cover (the telescope can be shortened by 250 mm
from below if necessary).
To assemble, the profile seal (closed circuit) (material EPDM) provided is inserted in the tank's sealing
groove and rubbed in with plenty of soft soap (do not used lubricants with a mineral oil base because they
will corrode the seal). The telescope is then greased, slid in and aligned to the terrain surface. The seal
integrity of the seal is then checked with water and the clamping profile (sold by the metre) inserted in the
.
channel running all the way round between the tank and telescope
5.

Assembling - telescopic dome shaft

5.1

Drinking water telescopic dome shaft

Important: To prevent loads from being transferred onto

the tank, round-grain gravel (max. grain size 8/16) is

filled in layers around the telescope and is evenly

compacted. Damage to the tank dome and telescope
must be avoided during this step. The cover is then
positioned and is sealed to prevent entry by children.
Tighten the threaded connection on the cover so tightly
that it cannot be opened by a child! For a professional
installation of a drinking water cover, the telescopic dome shaft must reach about 20 cm above the ground
level.
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