Startup - Grundfos Multilift M Montage- Und Betriebsanleitung

Fig. 27 Wiring diagram, three-phase Multilift M.22.3.4 with
contactors
Fig. 28 Wiring diagram, three-phase Multilift M.22.3.4,
M.24.3.2, M.32.3.2 and M.38.3.2 with motor-protective
circuit breaker

9. Startup

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 221 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 settings must have been
carried out according to sections
8.4 Setting of LC 221.
Start-up must be carried out by authorised personnel.
Proceed as follows:
1. Check all connections.
2. Connect the plug to the power supply and follow the controller
start-up sequence.
Note: It will take 15 seconds to boot the controller. When the
power supply is connected for the first time, three values for
the start level can be chosen (180, 250 or 315 mm above floor
level) according to the inlet height to the collecting tank.
Furthermore, the preset overcurrent and rated motor current
must be confirmed. See section
Now the controller is ready for automatic mode (selector
switch in pos. AUTO).
3. Open the isolating valves in outlet and inlet lines.
4. Activate a sanitary appliance connected to the inflow of the
Multilift M and monitor the increasing liquid level in the tank up
to the start level. Check the starts and stops at least twice.
If the pump cable was disconnected from the
controller, for instance to lead the cable through an
Note
empty cable conduit, check the direction of rotation
of the pump. See section
8.3 Electrical connection and
8.4 Setting of LC 221.
10.2 Motor.
23