Owner manual

4
English (US)
English (US) Installation and operating instructions
CONTENTS
Page
1. Introduction
The MQ is a low-noise water supply system
consisting of pump, motor, pressure tank and
controller combined into one compact unit.
The system is suitable for both indoor and out-
door use.
The self-priming pump starts automatically
when water is consumed in the installation and
stops when consumption ceases. The internal,
built-in non-return valve prevents backflow
during priming and operation.
The MQ pump incorporates overtemperature
and dry-running protection as well as a user-
friendly control panel.
The built-in pressure tank reduces the number
of starts and stops in case of leakage in the
installation.
2. Items supplied
The MQ packaging contains these items:
• MQ water supply system with built-in non-
return valve
• non-return inlet valve in plastic bag
• installation and operating instructions.
1. Introduction
4
2. Items supplied
4
3. Symbols used in this document
5
4. Applications
5
4.1 Pumped liquids
5
5. Identification
6
5.1 Type key
6
6. Operating conditions
7
6.1 Suction lift
7
7. Mechanical installation
8
7.1 Location
8
7.2 Foundation
8
7.3 Space requirement
8
7.4 Pipework
8
7.5 Protective cover
10
8. Electrical connection
11
8.1 Generator or inverter
11
8.2 Wiring diagram
12
8.3 Winding resistance measurement
12
8.4 Winding resistance measurement
13
8.5 Start-up
14
9. Functions
15
9.1 Control panel
15
9.2 Pump stop
16
10. Maintenance
17
10.1 Service kits
17
10.2 Start-up after a long period of inactivity
17
11. Service
17
12. Technical data
18
12.1 Dimensions
18
12.2 Electrical data
18
12.3 Approvals
18
13. Accessories
18
14. Fault finding chart
19
15. MQ frequently asked questions
21
16. Disposal
22
WARNING
Prior to installation, read these
installation and operating instruc-
tions. Installation and operation
must comply with local regula-
tions and accepted codes of good
practice.
Grundfos.book Page 4 Monday, May 23, 2011 10:17 AM