Grundfos SQ 1, Installation And Operating Instructions Manual

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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
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English (GB)