Product Manual
Table Of Contents
- 1. SQ, SQE introduction
- 2. SQ, SQE applications
- SQ with pressure switch and pressure tank
- Constant-pressure control with CU 301, residential water supply
- Constant-pressure control with CU 301, irrigation
- Maintaining a constant water table
- Emptying or filling a tank
- Pumping from one tank to another
- Setting of operating parameters
- SQE with manual speed control
- 3. Performance range
- 4. SQ, SQE installation
- 5. Sizing and selection
- 6. Cable sizing
- 7. SQ, SQE curve charts
- 8. SQ, SQE technical data
- 9. SQ, SQE construction
- 10. CU331SP variable frequency drive
- 11. Accessories
- 12. SP introduction
- 13. SP product overview
- 14. SP construction
- 15. SP operating conditions
- 16. How to read the curve charts
- 17. SP curve charts and technical data
- 4" and larger wells
- SP 5S (5 gpm)
- SP 7S (7 gpm)
- SP 10S (10 gpm)
- SP 16S (16 gpm)
- SP 25S (25 gpm)
- SP 35S (35 gpm)
- SP 45S (45 gpm)
- SP 62S (62 gpm)
- SP 77S (77 gpm)
- 6" and larger wells
- SP 85S (85 gpm)
- SP 150S (150 gpm)
- SP 230S (230 gpm)
- SP 300S (300 gpm)
- 8" and larger wells
- SP 385S (385 gpm)
- SP 475S (475 gpm)
- 10" and larger wells
- SP 625S (625 gpm)
- SP 800S (800 gpm)
- SP 1100S (1100 gpm)
- 18. SP electrical data
- 19. Accessories
- 20. Energy consumption
- 21. Cables
- 22. Friction loss tables
- 23. Grundfos Product Center
CU331SP variable frequency drive
SQ, SQE, CU 331, and SP
10
48
Indicator lights
The operating condition of the pump is indicated by the
indicator lights on the front of the control panel. See
fig. 46.
The table shows the function of the indicator lights.
Displays, general terms
Figures 47 and 48 show the general terms of the
display.
Fig. 47 Example of display in the start-up guide
Fig. 48 Example of display in the user menu
Warning and alarm list
1)
In case of an alarm, the CU331SP will change the operating mode
depending on the pump type. Warning is reset in display 3.20.
Indicator light Function
On (green)
The pump is running or has been stopped by a stop
function.
If flashing, the pump has been stopped by the user
(CU331SP menu), external start/stop or bus.
Off (orange) The pump has been stopped with the on/off button.
Alarm (red) Indicates an alarm or a warning.
Display name
Current display / total number
Value field
Display name
Display number, menu name
Value field
Code and display text
Status
Operating
mode
Resetting
Warning
Alarm
Locked alarm
1 Too high leakage current ● Stop Man.
2 Mains phase failure
● Stop Aut.
3 External fault
● Stop Man.
16 Other fault
● Stop Aut.
● Stop Man.
32 Overvoltage
●
-Aut.
● Stop Aut.
40 Undervoltage
●
-Aut.
● Stop Aut.
48 Overload
● Stop Aut.
● Stop Man.
49 Overload
● Stop Aut.
55 Overload
●
-Aut.
● Stop Aut.
57 Dry running
● Stop Aut.
64
Too high CU331SP
temperature
● Stop Aut.
89 Sensor 1 outside range
●
1)
Aut.
96
Setpoint signal outside
range
●
1)
Aut.
155 Inrush fault
● Stop Aut.
241 Motor phase failure
●
-Aut.
● Stop Aut.