Grundfos PS.G Series Installation And Operating Instructions Manual page 10

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5.3 Venting pipe
We recommend that you provide the pit with a venting pipe
(accessory). See section 5.1 Connecting the
Fig. 17 Pit with top-mounted venting pipe
Fig. 18 Pit with side-mounted venting pipe
5.4 Service platform
The service platform is for one person only and is to be used
when operating the isolating valves inside the pit.
Do not place pumps temporarily on the service
Caution
platform.
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pipes.
Fig. 19 Fixed service platform
Fig. 20 Liftable service platform
5.5 Cables
The cables to the level switches and the pump can be led into the
pit through a cable entry placed on the side of the pit.
Caution
Fig. 21 Cable entry
Caution
When dismantling or assembling the pump, make
sure not to pinch or damage the cables.
When the pump and cables have been installed,
the cables must be suspended in such a way that
any stress is relieved from the cables.
If corrosion gasses are present, we recommend
that you use a gas-tight cable entry.