Install The Pump - Wilo DrainLift WS 40 Einbau- Und Betriebsanleitung

6.4.12 Backfill the pit
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Fig. 13: Backfill the pit
6.4.13

Install the pump

3
2
Fig. 14: Install the pump
Installation and operating instructions Wilo-DrainLift WS 40/50
Installation and electrical connection
chamber.
- Screw in the enclosed wood screw as far as it will go.
▶ Pump chamber extension installed. Next step: Backfill the pit.
Observe the following points when backfilling the pit:
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Make sure that the pump chamber is in a consistent and vertical position.
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Backfill and compress the pump chamber and pump chamber extension by hand
(vane, hand rammer).
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Secure pump chamber against buoyancy. If necessary, fill the pump chamber with
water.
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The details of the filling material are minimum requirements. Check and comply with
local regulations.
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Backfill and compress the pipes according to local regulations.
1 Underlay
4
2 Levelling layer
3 Compression layers
4 Substructure to the surface level
5 Chamber cover
3
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Pump chamber is vertical.
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The chamber base is completely embedded in the levelling layer.
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All pipe adaptors are connected and sealed.
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Pump chamber extension installed.
2
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Filling material available:
1
Non-cohesive material (sand or gravel) without sharp-edged components, grain
size 0 – 32 mm)
1. Backfill the pit in layers all around at the same height. Max. layer thickness:
300 mm (12 in). Compress the individual layers properly (Dpr. 97 %).
NOTICE! The compression layers must extend to the chamber neck!
2. Align the surface level with the chamber cover using the substructure.
NOTICE! If the surrounding grown soil consists of cohesive material, the sub-
structure can be made with this material. Max. grain size: 20 mm!
▶ The pit is backfilled. Next step: Install the pump.
1 Pump
2 Discharge pipe
3 Attachment point
4
4 Cable tie
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The pit is backfilled.
1
1. Pump any existing water out of the pump chamber.
2. Remove coarse contaminants in the pump chamber.
3. Uncouple the discharge pipe from the surface coupling and lift it out of the pump
chamber.
4. Screw the discharge pipe to the pump with the enclosed installation material.
5. Attach the connection cable to the horizontal part of the discharge pipe using the
cable tie supplied. Run the cable from the pump to the cable tie with slight tension
and with no slack.
6. Attach the hoisting chain to the discharge pipe at the attachment point.
7. Attach the hoisting chain to the lifting equipment.
8. Lower the pump and discharge pipe into the chamber.
CAUTION! If the pump and discharge pipe are drained, do not bump into and get
stuck on the chamber fittings. Depending on the pump type, turn the pump 90°
when draining.
9. Couple the discharge pipe into the surface coupling.
en
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