Wiring Diagrams; Start-Up - Grundfos Multilift MSS Montage- Und Betriebsanleitung

7.5 Wiring diagrams

Fig. 17 Wiring diagram for Multilift MSS, single-phase
Fig. 18 Wiring diagram for Multilift MSS, three-phase
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8. Start-up

Warning
Before starting any work on a pump used for
pumping liquids which could be hazardous to
health, clean and vent the pump, pit, etc.,
thoroughly according to local regulations.
Warning
Before making any connections in LC 220 or
working on pump, pit, etc., make sure that the
power supply has been switched off and that it
cannot be accidentally switched on.
Prior to start-up, the connection and DIP-switch setting must have
been carried out according to sections 7.3 Electrical connection
and 7.4 Setting of LC 220.
Start-up must be carried out by authorised personnel.
Proceed as follows:
1. Check all connections.
2. Open the isolating valves in discharge and inlet lines.
3. Switch on the power supply.
4. Activate a sanitary appliance connected to the inflow of the
Multilift MSS and monitor the increasing water level in the tank
up to the start level. Check the starts and stops at least twice,
and then change the ON-OFF-AUTO selector switch to
automatic mode.