Wilo DrainLift WS 50 Basic Einbau- Und Betriebsanleitung Seite 63

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7.6 During operation
8 Shut-down/dismantling
8.1 Personnel qualifications
8.2 Operator responsibilities
8.3 Shut-down
62
Shut-down/dismantling
2. Switchgear: Select automatic mode.
3. Open the gate valve in the inlet and pressure pipe.
▶ The pumping station operates in automatic mode and the pump is controlled de-
pending on the level.
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Open the gate valve in the inlet and pressure pipe!
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The maximum inflow is less than the maximum output of the unit.
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Do not remove the chamber cover!
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Ensure aeration and venting of the pump chamber!
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If the outside temperature remains below 0 °C for a prolonged period of time, there
is a risk of frost in the pump chamber if the water exchange is insufficient:
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Provide insulation measures above the chamber cover.
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Decommission the pump chamber.
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Electrical work: qualified electrician
Person with appropriate technical training, knowledge and experience who can
identify and prevent electrical hazards.
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Installation/dismantling work: trained specialist in plant technology for sanitary fa-
cilities
Fixation and buoyancy safeguards, connection of plastic pipes
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Ground installation (underground): trained specialist in underground and pipeline
construction
Excavate and prepare the pit, backfill the pit, buoyancy safeguards, connection of
plastic pipes.
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Lifting work: trained specialist for the operation of lifting devices
Lifting equipment, lifting gear, attachment points
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Observe locally applicable accident prevention and safety regulations of professional
and trade associations.
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Provide the necessary protective equipment and make sure that the personnel wears
it.
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Ensure enclosed spaces have sufficient ventilation.
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Take immediate countermeasures if there is a build-up of toxic or suffocating gases!
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When working in enclosed spaces, a second person must be present for safety reas-
ons.
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When using lifting equipment, observe all regulations for working with and under
suspended loads!
1. Close the gate valve in the inlet pipe.
2. Switch the switchgear to standby mode.
3. Drain the pump chamber.
Activate the pump in manual mode and drain the pump chamber.
4. Close the gate valve in the pressure pipe.
5. Pump out the remaining pumped fluid via emergency draining.
6. Switch off the pumping station: CAUTION! Secure against unauthorised re-start!
- Pull the plug out of the socket.
- Switch off the switchgear at the main switch.
▶ The pumping station is now out of operation.
If the pumping station is out of operation for an extended period, carry out a functional
check at regular intervals (quarterly). CAUTION! Carry out the functional check as de-
scribed under "Test run".
WILO SE 05