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5.7 Closing the cover
The tank is shipped without the gasket fitted under the cover. Prepare it as in figure 7B after having removed
the film, fig. 7A
Check that the gasket of the cover is lying in the bottom of its seat and is not twisted before screwing the
cover onto the tank.
Check that the gasket does not slip in the thread during screwing. In case of installation inside buildings, the
cover must be screwed right down to guarantee that the station is hermetically sealed against liquids and
gas.
5.8 Provision for emergency drainage
On the rear, at the base of the station, is a connection for an emergency drainage system, marked by the
symbol
. You can use the connection to attach a secondary pump (for example a manual diaphragm
pump), the discharge pipe of which must be independent from that of the internal electropump in the station.
Identify the seat for the duct on the bottom of the station, open the duct and connect the emergency drainage
pipe. Check that the coupling is watertight.
5.9 Non-return valve
Install a non-return valve in the pipe connecting to the public/private sewer network. This will avoid the reflux
of liquid. Place the valve at a distance of at least 1 metre from the lifting station to allow the flow of liquid,
moved by the pump, to open the shutter of the valve (unless indicated otherwise by the manufacturer).
Always refer to the local and/or national regulations, laws and standards in force.
The non-return valves are available as accessory kits.
5.10
Interception gate valve
Install an interception valve in both the inlet pipe and the delivery pipe (connection to the public/private sewer
network). In this way maintenance work can be carried out without having to drain the whole system. Gate
valves or ball valves may be used.
The interception valves are available as accessory kits.
See example of installation in chapter 4.
A
B
Fig. 7
