Grundfos 10SQ-110, Инструкция по установке и эксплуатации

Страница: 4 / 18

4
CONTENTS
Page
1. General description 4
1.1 Applications 4
2. Preinstallation 4
2.1 Well preparation 4
2.2 Make sure you have the right pump 4
2.3 Pumped liquid requirements 4
2.4 Motor cooling requirements 5
2.5 Liquid temperatures/cooling 5
2.6 Motor preparation 5
2.7 Refilling of motor liquid 5
3. Installation positions 6
3.1 Positional requirements 6
4. Electrical connection 6
4.1 General 6
4.2 Motor protection 6
4.3 Connection of motor 6
5. Cable sizing 7
6. Splicing the cable 7
7. Fitting the cable plug to the motor 7
8. Fitting the cable guard 8
9. Piping 8
10. Installing the pump 9
10.1 Installation depth 9
11. Generator operation 9
12. Starting the pump for the first time 10
12.1 Motor cooling and other considerations 10
12.2 Impurities in the water 10
12.3 Minimum flow rate 10
12.4 Built-in protection 10
12.5 Resetting the pump 10
12.6 MS 3 motors 10
12.7 MSE 3 motors 10
12.8 Maintenance and service 10
13. Assembly of pump and motor 11
14. Troubleshooting 12
14.1 Instruments not allowed 13
15. Checking of motor and cable 13
16. Environment 13
17. Disposal 13
18. Technical data 14
1. General description
The SQ/SQE is a 3 inch diameter submersible pump
mainly designed for the pumping of raw water in do-
mestic water supply. This manual is designed to assist
in the proper set-up, installation and operation of
these pumps.
1.1 Applications
Typical applications are:
• residential housing
• small waterworks
• pressure boosting
• irrigation systems
• liquid transfer in tanks.
2. Preinstallation
2.1 Well preparation
If the pump is to be installed in a new well, the well
should be fully developed and bailed or blown free of
cuttings and sand.
The construction of the Grundfos SQ/SQE submersi-
bles makes them resistant to abrasion; however, no
pump made of any material can forever withstand the
destructive wear that occurs when constantly pump-
ing sandy water.
If this pump is used to replace an oil-filled submers-
ible or oil-lubricated line-shaft turbine in an existing
well, the well must be blown or bailed clear of oil.
2.2 Make sure you have the right pump
Determine the maximum depth of the well and the
drawdown level at the maximum pump capacity.
Pump selection and setting depth should be made
based on this data.
2.3 Pumped liquid requirements
Submersible well pumps are designed for pumping
clear, cold water; free of air or gases. Decreased pump
performance and life expectancy can occur if the wa-
ter is not clear, cold or contains air or gases.
The water temperature should not exceed 104°F.
A check should be made to ensure that the installa-
tion depth of the pump will always be at least three
feet below the maximum drawdown level of the well.
The bottom of the motor should never be installed
lower than the top of the well screen or within five
feet of the well bottom.
Before beginning installation procedures,
these installation and operating instruc-
tions should be studied carefully. The in-
stallation and operation should also be in
accordance with local regulations and ac-
cepted codes of good practice.