Graf KLARO Easy Notice D'installation page 46

4.2 Lower tank connections (only for 4-tank systems)
4.2.1 Holes for the lower tank connections
The preliminary cleaning/sludge storage tanks are connected to one another at the end faces. The rele-
vant drilling height can be found in the table above, yet this distance must be measured from below.
4.2.2 Overflow baffles for the lower tank connections
The lower tank connections are connected between both preliminary cleaning tanks and the SBR basin
via the lower end faces of the tank (please note: the preliminary cleaning and SBR basin may only be
linked together at the top), see the figure above.
In order to ensure that the deposited sludge is
retained in the tanks, the tank connection must be
extended to the top.
Assembly involves inserting a short pipe section
(length 150mm) into the tank from the outside to
the inside (1) and then fitting the overflow baffle
(2).
The connection sockets must be secured using
Spax screws. The complete tank connection is
shown in the adjacent figure.
4.3 Tank connection for excess sludge return
The tank connection for sludge return is attached to the dome shaft.
For the mini tank dome, the sludge return is to be attached to the upper hole and is to be laid with an in-
cline to the first tank (for multi-tank systems, see drawing).
For the maxi tank dome, the sludge return is to be attached to the middle hole and is to be attached to the
lower hole in the first tank.
4. Holes in the Carat S tank
45 / 148
Pipe diameter
<= 50 inhabitants: DN 110
>= 60 inhabitants: DN 160
500
150
Seal