Wiring Diagrams; Maintenance And Service - Grundfos Multilift MOG Manual Del Usuario

8.5 Wiring diagrams

P2 P1
X6
T2 T2
T1 T1
6
5
Fig. 27 Wiring diagram, single-phase Multilift MOG
P2 P1
X6
Q1
T2
T2
T1 T1
Motor protection
2T1 4T2
3
6
2
5
M 3~
Fig. 28 Wiring diagram, three-phase Multilift MOG
P2 P1
X6
Q2
T2 T2
T1 T1
Motor protection
2T1 4T2 6T3
3 1
2
6 6
5 5
pump 2
M 3~
Fig. 29 Wiring diagram, three-phase Multilift MDG
30/150μF
PE N L
Z2
U2
Q1
1 3
PE N L
2
PE
M 1~
PE L3 L2
N L1
6T3
PE L3 L1
N
L2
1
PE
Q1
PE N L3 L2 L1
Motor protection
2T1 4T2 6T3
PE L3 L1
3 1
N L2
2
PE
pump 1
M 3~
PE
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 startup, the connection and settings must have been
carried out according to sections
8.4 Setting of LC 221.
Startup 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
startup sequence.
Note: It will take up to 45 seconds to boot the controller. It can
be interrupted down to 5 seconds by pressing OK button.
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. If the inlet height is between two levels choose the lower
level for start in the display. All other settings are preset.
Some can be changed. 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 MOG or MDG 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, the wires must be connected in
accordance with the wiring diagrams.

10. Maintenance and service

The Multilift MOG and MDG require a minimum of maintenance.
Warning
Before carrying out maintenance and service on
lifting stations used for pumping liquids which might
be hazardous to health, make sure that the lifting
station has been thoroughly flushed with clean water
and that the outlet pipe has been drained. Rinse the
parts in water after dismantling. Make sure that the
isolating valves have been closed. The work must be
carried out in accordance with local regulations.
Warning
Before making any connections in LC 221 or working
on lifting stations, make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
8.3 Electrical connection and
8.4 Setting of LC 221.
25