Setting By Means Of The Control Panel; Back To Factory Setting - Grundfos CU331SP Installation And Operating Instructions Manual

Menu structure
The CU331SP has a start-up guide, which is started at the first
start-up. After the start-up guide, the CU331SP has a menu
structure divided into four main menus:
1. GENERAL gives access to the start-up guide for the general
setting of the CU331SP.
2. OPERATION enables the setting of setpoint and resetting of
alarms. It is also possible to see the latest five warnings and
alarms.
3. STATUS shows the status of the CU331SP and the pump. It is
not possible to change or set values.
4. INSTALLATION gives access to available parameters.

11. Setting by means of the control panel

11.1 Control panel
Warning
The On/Off button on the control panel does not
disconnect the CU331SP from the power supply
and must therefore not be used as a safety
switch.
The On/Off button has the highest priority. In
On/ On/
"Off" condition, pump operation is not possible.
Off
The control panel is used for local setting of the CU331SP. The
functions available are preset in the CU331SP.
CU CUE
On/ On/
Off
+
-
>
OK
On On
Off
Alarm Alarm
Fig. 20 Control panel of the CU331SP
Editing buttons
Button Function
Makes the pump ready for operation/starts and
On/ On/
Off
stops the pump.
Saves changed values, resets alarms and expands
OK
the value field.
-
+
Changes values in the value field.
10
Navigating buttons
Button Function
Navigates from one menu to another. When the
>
menu is changed, the display shown will always be
the top display of the new menu.
Navigates up and down in the individual menu.
Adjusting the display contrast
Press OK and + for darker display.
Press OK and - for brighter display.
Button lock
To lock the buttons on the panel press and hold the up and down
arrows simultaneously.
Indicator lights
The operating condition of the pump is indicated by the indicator
lights on the front of the control panel. See fig. 20.
The table shows the function of the indicator lights.
Indicator
Function
light
The pump is running or has been stopped by a
stop function.
On (green)
If flashing, the pump has been stopped by the
user (CU331SP menu), external start/stop or
bus.
The pump has been stopped with the On/Off
Off (orange)
button.
Alarm (red) Indicates an alarm or a warning.
Displays, general terms
Figures 21 and 22 show the general terms of the display.
Current display / total number
Fig. 21 Example of display in the start-up guide
Display number, menu name
Fig. 22 Example of display in the user menu

11.2 Back to factory setting

Follow this procedure to get back to the factory setting:
1. Switch off the power supply to the CU331SP.
2. Press On/Off, OK and + while switching on the power supply.
The CU331SP will reset all parameters to factory settings. The
display will turn on when the reset is completed.
Display name
Value field
Display name
Value field