Grundfos Pressure Manager
6
Applications
Typical applications are water supply systems and
rainwater systems in
• single-family houses
• blocks of flats
• summer houses and holiday cottages
• horticulture and gardening
• agriculture.
Liquids
Clean, thin, non-aggressive and non-explosive liquids
without solid particles or fibres that may attack the unit
mechanically or chemically.
Examples:
• municipal water
• rainwater.
Examples of applications
PM 1 or PM 2 installed in connection with an
SQ pump
When the PM unit is installed downstream from the
pressure tank, the SQ pump is started immediately
when a tap is opened. This means that the pump is
started when there is a flow. In this way the pressure
tank compensates for the pressure drop to be expected
when the pump starts. The pump takes a few seconds
to reach full speed, i.e. pressure.
Fig. 5 Water supply from a borehole – typically at depths
exceeding 8 metres
PM 1 or PM 2 installed in connection with a JP pump
The PM unit and the JP pump constitute a small
waterworks. The pump will be started whenever water
is consumed, due to the pressure drop. If the water
level in the well drops from time to time, the pump may
run dry. In this case, the PM 2 can be used with the
auto-reset function enabled. Then the water supply will
automatically be re-established when the water level
rises again, and the pump is thus able to reprime the
suction line.
Note: The same function can be achieved if the pump
is drawing water from a break tank as long as the pump
is able to self-prime.
Fig. 6 Water supply from a well – typically at depths
down to 8 metres
TM04 4821 2109
SQ
PM 1/PM 2
TM04 4822 2109
PM 1/PM 2
H
max
=8m
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