Grundfos SQ User Manual

6
Original installation and operating instructions.
CONTENTS
Page
1. General
On page 314 of these installation and operating
instructions, you will find copies of the pump and
motor nameplates.
Before the SQ/SQE pump is lowered into the
borehole, this page should be filled in with the
relevant nameplate data.
These installation and operating instructions must be
kept in a dry place near the installation site for
reference purposes.
1.1 Applications
The SQ and SQE pumps are designed for pumping
thin, clean, non-aggressive, non-explosive liquids,
not containing solid particles or fibres.
Typical applications:
• Groundwater supply for
- private housing,
- small waterworks,
- irrigation systems in for instance green houses.
• Liquid transfer in tanks.
• Pressure boosting.
The SQE-NE pumps are designed for pumping thin,
clean, non-explosive liquids, not containing solid
particles or fibres.
These pumps are suitable for pumping contaminated
or hydrogen-carbonate containing groundwater, e.g.
from
• dumps,
• chemical depots,
• industrial areas,
• oil and petrol filling stations,
• environmental applications.
The SQE-NE pumps can also be used for sampling
and monitoring and to some extent for incorporation
in water treatment systems.
Information applying to all pump types:
The maximum sand content of the water must not
exceed 50 g/m³. A larger sand content will reduce
the life of the pump and increase the risk of blocking.
Note: If liquids with a viscosity higher than that of
water are to be pumped, please contact Grundfos.
pH values:
SQ and SQE: 5 to 9.
SQE-NE: Please contact Grundfos.
Liquid temperature:
The temperature of the pumped liquid must not
exceed 35 °C.
1. General
6
1.1 Applications
6
2. Technical data
7
2.1 Storage
7
2.2 Sound pressure level
7
3. Preparation
7
3.1 Refilling of motor liquid
7
3.2 Positional requirements
8
3.3 Liquid temperatures/cooling
8
4. Electrical connection
9
4.1 General
9
4.2 Motor protection
9
4.3 Connection of motor
9
5. Installation
9
5.1 General
9
5.2 Assembly of pump part and motor
9
5.3 Removal of non-return valve
10
5.4 Fitting the cable plug to the motor
10
5.5 Fitting the cable guard
10
5.6 Cable sizing
11
5.7 Fitting the submersible drop cable
12
5.8 Pipework connection
12
6. Start-up
13
7. Operation
13
7.1 Minimum flow rate
13
7.2 Selection of diaphragm tank and setting
of precharge pressure and pressure
switch
13
7.3 Built-in protection
14
8. Maintenance and service
14
8.1 Contaminated pumps
14
9. Fault finding chart
15
9.1 Megging
16
10. Checking the electricity supply
17
11. Environment
17
12. Disposal
17
Warning
The use of this product requires
experience with and knowledge of the
product.
Persons with reduced physical,
sensory or mental capabilities must not
use this product, unless they are under
supervision or have been instructed in
the use of the product by a person
responsible for their safety.
Children must not use or play with this
product.
Before beginning installation
procedures, these installation and
operating instructions should be
studied carefully. The installation and
operation should also be in accordance
with local regulations and accepted
codes of good practice.

Grundfos SQ Specifications

General

Motor	Permanent magnet motor
Material	Stainless steel
Protection class	IP68
Frequency	50/60 Hz
Application	Irrigation, Pressure boosting
Pumped liquid	Water
Power Supply	Single-phase or Three-phase
Operating Temperature	0 - 40 °C