Grundfos SQ Series User Manual

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ............. 6
2. Symbols used in this document ...... 6
3. General .................... 7
3.1 Applications .................. 7
4. Technical data ................ 8
4.1 Storage .................... 8
4.2 Sound pressure level ............. 8
5. Preparation.................. 9
5.1 Refilling of motor liquid ............ 9
5.2 Positional requirements............ 9
5.3 Liquid temperatures/cooling .........10
6. Electrical connection ............11
6.1 General ....................11
6.2 Motor protection................12
6.3 Connection of motor .............12
7. Installation ..................12
7.1 General ....................12
7.2 Assembly of pump part and motor ......13
7.3 Removal of non-return valve .........13
7.4 Fitting the cable plug to the motor ......14
7.5 Fitting the cable guard ............14
7.6 Cable sizing ..................15
7.7 Fitting the submersible drop cable ......15
7.8 Pipework connection .............16
8. Start-up ....................17
9. Operation...................17
9.1 Minimum flow rate ..............17
9.2 Selection of diaphragm tank and setting
of precharge pressure and pressure
switch .....................17
9.3 Well system pressure overload........18
9.4 Built-in protection ...............19
10. Maintenance and service ..........19
10.1 Contaminated pumps .............19
11. Fault finding chart ..............20
11.1 The pump does not run. ...........20
11.2 The pump runs but gives no water.......20
11.3 The pump runs at reduced capacity. .....20
11.4 Frequent starts and stops. ..........21
11.5 Megging ....................21
12. Checking the power supply ........22
13. Environment .................23
14. Disposing of the product ..........23
5
English (GB)

Grundfos SQ Series Specifications

General

Brand	Grundfos
Model	SQ Series
Category	Water Pump
Language	English