Wilo DrainLift WS 50 Basic Einbau- Und Betriebsanleitung Seite 50

6.4.2 Note on pipework
6.4.3 Work steps
Building installation
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Preparatory tasks.
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Install the pump chamber.
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Connect the pressure pipe.
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Connect the inlet.
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Connect the aeration and venting.
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Connect the emergency drain.
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Check the pump is properly fitted.
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Install the level control device.
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Lay the connection cable.
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Fit the chamber cover.
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Final tasks.
Installation and operating instructions Wilo-DrainLift WS 40/50 Basic
Installation and electrical connection
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Avoid tearing or chipping of the construction surface, observe the minimum edge
distances.
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Ensure tight and secure installation, adhere to the prescribed borehole depth.
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Drilling dust impairs holding strength, always blow out or vacuum out the bore-
hole.
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Only use components (e.g. screws, anchors, mortar cartridges) which are in perfect
condition.
The pipework is subjected to different pressures during operation. Pressure peaks can
also occur (e.g. when closing the swing check valve) which may be several times higher
than the pump pressure, depending on the operating conditions. These different pres-
sures put a strain on the piping and the pipe adaptors. In order to ensure safe and fault-
less operation, the piping and pipe adaptors must be checked based on the following
parameters and designed according to the requirements:
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Pipes are self-supporting.
No tensile or compressive forces may act on the lifting unit.
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Pressure resistance of pipework and pipe adaptors
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Tensile strength of the pipe adaptors (= longitudinal force fit connection)
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Connect the pipes free of stress and vibrations.
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Provide a gate valve in the inlet and the pressure pipe on-site!
The pump chamber is installed in the following steps:
Ground installation
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Preparatory tasks.
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Install the pump chamber.
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Connect the pressure pipe.
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Connect the inlet.
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Connect the aeration and venting.
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Connect the cable pipe.
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Fit the pump chamber extension.
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Backfill the pit.
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Check the pump is properly fitted.
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Install the level control device.
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Lay the connection cable.
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Fit the chamber cover.
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Final tasks.
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