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CONTENTS
1.
2.
2.1
2.2
2.3
3.
3.1
4.
4.1
4.2
4.3
5.
5.1
5.2
5.3
6.
7.
7.1
7.2
7.3
8.
8.1
8.2
8.3
8.4
9.
10.
11.
12.
13.
14.
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
6
1. Symbols used in this document
Page
Warning
6
If these safety instructions are not
6
observed, it may result in personal
6
injury!
6
6
If these safety instructions are not
6
observed, it may result in malfunction
Caution
7
or damage to the equipment!
8
Notes or instructions that make the job
Note
8
easier and ensure safe operation.
8
2. Applications
8
The Grundfos PM 2 is designed for automatic start/
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stop control of Grundfos pumps and other pumps for
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water supply. The PM 2 can be installed in systems
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with or without a pressure tank.
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Typical applications are water supply systems and
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rainwater systems in
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•
single-family houses
11
•
blocks of flats
•
summer houses and holiday cottages
11
•
horticulture and gardening
12
•
agriculture.
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2.1 Liquids
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Clean, thin, non-aggressive and non-explosive
liquids without solid particles or fibres that may
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attack the unit mechanically or chemically.
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Examples:
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•
drinking water
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•
rainwater.
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2.2 Liquid temperature
15
0 °C to +40 °C.
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2.3 Operating pressure
Max. 10 bar.
3. Installation
Install the unit on the discharge side of the pump.
See fig. 2.
If pumping from a well, borehole or similar, always fit
a non-return valve on the suction pipe of the pump.
It is recommended to connect the unit to the piping
system using unions.
The outlet connection of the unit can be rotated
360 °. See fig. 1.
The inlet connection is an integrated part of the unit
housing.
The unit has a built-in non-return valve.
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