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4.4
Connecting the ventilation pipe
WARNING
If the ventilation pipe is not connected, this can
have a negative effect on the sensors in the tank.
This can cause complete functional failure of the
system.
Saw off the socket for the ventilation pipe to the required
length.
Route the ventilation pipe (DN70) to above the roof, or to
a vent stack. The ventilation pipe must have a clear route
to atmosphere, and be able to allow air to pass in both
directions.
4.5
Installing and removing the pump(s)
Installation
Fix the wastewater pump(s) with the screws (1) (tighten-
ing torque 7 Nm).
Install a welded PE pipe as the pressure pipe.
Install an additional pressure release chamber for pump
SPF 4500.
Removal
To make removal of the pump from the chamber easier, remove the plug (1) from the pump housing.
Screw in the lifting eye/bolt (2) (M8 not included in the scope of supply).
Fit a lifting sling to the lifting eye/bolt and use this to lift the pump.
Take note of the pump's own weight and use tested hoisting gear, e.g. lifting slings.
010-694
Backwater lifting station / Installation and operating instructions
33 / 136
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