Wilo DrainLift WS 40 Einbau- Und Betriebsanleitung Seite 51

6.4.9 Connect the emergency drain
(only building installation)
Installation and operating instructions Wilo-DrainLift WS 40/50
Installation and electrical connection
DrainLift WS 40E/50E
Fig. 9: Aeration and venting connection
5 Aeration and venting line connection
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Pump chamber is installed properly.
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On-site aeration and venting line is laid properly.
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HT sleeve socket available
1. Open the aeration and venting connection piece: Sawing edge approx. 25 mm.
2. Deburr and smooth the sawing edge.
3. Place the HT sleeve socket onto an open aeration and venting connection piece.
4. Insert the on-site aeration and venting pipe into the HT sleeve socket.
▶ Aeration and venting installed. Next step: Connect the emergency drain (only
building installation).
NOTICE
Do not connect inlet to the emergency drain!
The pump chamber is pumped out via the emergency drain in the event of an acci-
dent. Do not connect inlets to the emergency drain! The pump chamber cannot be
drained in case of emergency otherwise!
In case of maintenance work or pump malfunction, the pump chamber can be emptied
via the emergency drain. It is recommended to install a diaphragm hand pump for this
purpose.
CAUTION! If the pumps malfunction, there is backflow into the inlet and the pump
chamber can burst! Shut off the inlet and drain the pump chamber.
DrainLift WS 40E/50E
Fig. 10: Emergency drain connection
4 Emergency drain connection
Observe the following points when installing a diaphragm hand pump:
DrainLift WS 40D/50D
5
DrainLift WS 40D/50D
4
en
5
4
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