Control Panel - Grundfos Multilift MOG Installations- Und Bedienungsanleitung

5.2.1 Design
The LC 221 level controller incorporates the necessary
components to control and protect the pumps, such as relays and
capacitors for single-phase motors, contactors and additional
motor-protective circuit breaker for three-phase motors.
The control panel offers a user interface with operating buttons
and a display for indication of operating conditions and fault
indications.
Furthermore, it has an integrated piezoresistive pressure sensor
which is activated by compressed air directly via the pressure
tube inside the collecting tank. Finally, it has terminals for power
supply, connection to the pump and the inputs and outputs
mentioned in section 5.2 LC 221
The front cover is closed by four bayonet fastenings with quarter
turn locks. On the left side, the locks are extended and connected
to the cabinet bottom with hinge strings. The cabinet offers the
possibility of being mounted on a wall without opening it first.
A drilling template and six screws with rubber guides are
enclosed.
Fig. 10 Mounting of LC 221 controller

5.2.2 Control panel

1 3
1 3
2
2
Fig. 11 Control panel of LC 221 one-pump controller (MOG)
1 3
1 3
2
2
Fig. 12 Control panel of LC 221 two-pump controller (MDG)
12
controller.
4
4
4
4
Pos. Description
1 Display
2 Operating buttons
3 Status LEDs
4 ON-OFF-AUTO selector switch
Display (pos.1)
The display shows all relevant operating data and fault
indications. The operating and fault indications are described in
section 6.1 Description of display.
Operating buttons (pos. 2)
The level controller is operated by the operating buttons placed
under the display. The function of the operating buttons is
described in the table below:
Operating
Description
button
• go left in the main menu.
• go up in the submenus.
• decrease values in the submenus.
• confirm a selection.
• activate the submenus.
• reset the buzzer.
• go right in the main menu.
• go down in the submenus.
• increase values in the submenus.
Status LEDs (pos. 3)
The upper LED (green) is on when the power supply is on.
The lower LED flashes (red) in case of fault to make the fault
visible from a long distance and is thus an addition to the display
symbols and fault codes.
Selector switch (pos. 4)
Switch Description of function
The operating mode is selected by the
ON-OFF-AUTO selector switch which has three
different positions:
POS I:
Starts the pump manually. The operating time
protection is active and indicates alarm after
3 minutes. Normal operating times are up to max.
90 seconds with pipework DN 32 and 60 seconds
with pipework DN 40.
POS O:
• Stops the pump when running and cuts off the
power supply to the pump. The three symbols
"Settings locked", "Information" and "Setup" will
be visible.
• Resets fault indications.
POS AUTO:
Automatic operation. The pump will start and stop
according to the signal from the level sensor.