Mounting The Telescopic Dome Shaft Cover - Graf DN 400 Notice D'installation Et D'entretien

info@graf.info
www.graf.info
please note item 6.5.2 or 6.5.3 respectively. The cover is subsequently placed in position and locked with
a childproof lock.
6.5

Mounting the telescopic dome shaft cover

The telescopic dome shaft cover allows the stepless adaptation of the shaft system to the ground surface.
It is to be made absolutely certain that the inlet is not totally or partly blocked by the telescope in the
finally installed state. It may be necessary to shorten the telescope; this is easily done from below. In the
case of installation depths < 1750 mm, the shaft housing must be shortened accordingly from above.
Before inserting the telescopic dome shaft cover, the profile seal is inserted into the sealing groove in the
housing. The telescope and the seal must be generously greased with the soft soap supplied (do not use
petroleum-based lubricants).
Attention: If the soft soap dries, the telescope dome shaft cover can only be moved with great difficulty
and there is a risk of the seal slipping out of the sealing groove. It must be checked before filling that the
seal is seated correctly.
6.5.1 Telescope pedestrian resistant
The telescope must be adequately lined, so that the load

forces can in no case be transmitted to the shaft housing .
In order to prevent the transfer of loads to the shaft housing,
 1
rounded gravel (max. granulation 8/16) is filled layer by

2
layer around the telescope (colour: green) and evenly
compacted. Damage to the shaft and/or the telescope is
thereby to be avoided.
3
Important: The cover is subsequently placed in position and
locked with a childproof lock.
24 / 50