English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ............. 5
1.1 Hazard statements .............. 5
1.2 Notes ..................... 5
2. General .................... 6
2.1 Expansion possibilities ............ 6
2.2 On/Off button ................. 6
3. Mechanical installation ........... 7
3.1 Location .................... 7
3.2 Mounting CU 300 ............... 7
4. CU 300 as an alarm unit........... 7
4.1 Description .................. 7
4.2 Electrical installation ............. 8
4.3 Description of dry-running protection..... 9
4.4 Settings ....................10
4.5 Description of the dewatering function ....10
5. CU 300 with constant-pressure control
- 0 to 6 bar ..................12
5.1 Description ..................12
5.2 Function ....................12
5.3 Positioning the pressure sensor .......14
5.4 System sizing .................14
5.5 Electrical installation .............15
5.6 Startup.....................16
6. CU 300 with constant-pressure control
- 0 to 10 bar..................17
6.1 Description ..................17
6.2 Function ....................17
6.3 Positioning the pressure sensor .......18
6.4 System sizing .................18
6.5 Electrical installation .............19
6.6 Startup.....................20
7. CU 300 with constant-pressure control
- two-pump operation ............21
7.1 Description ..................21
7.2 Function ....................21
7.3 Positioning the pressure sensor .......22
7.4 System sizing .................22
7.5 Electrical installation .............23
7.6 Startup.....................24
8. CU 300 with sensors ............25
8.1 General ....................25
8.2 Sensor functioning ..............26
8.3 Electrical installation .............27
9. CU 300 connected to potentiometer ....29
9.1 Description ..................29
9.2 Electrical installation .............30
10. CU 300 connected to water meter .....31
10.1 Description ..................31
10.2 Electrical installation .............32
11. Constant water level ............33
11.1 Description ..................33
11.2 Function ....................33
11.3 Electrical installation .............34
12. CU 300 connected to RS-485 ........36
12.1 Description ..................36
12.2 CU 300 connected to a PC directly......36
12.3 Electrical installation .............37
13. Alarm functions ...............39
13.1 No contact...................39
13.2 Overvoltage ..................39
13.3 Undervoltage .................40
13.4 Dry running ..................40
13.5 Speed reduction................41
13.6 Overtemperature ...............41
13.7 Overload ...................42
13.8 Sensor alarm .................42
14. CU 300 with Grundfos GO .........43
14.1 Menu overview ................44
15. Description of functions ..........46
15.1 Status .....................46
15.2 Settings ....................47
15.3 Alarms and warnings .............52
16. Technical data ................53
17. Disposing of the product ..........55
18. Document quality feedback ........55
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English (GB)
