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2.2.1 Examples of Booster Sets Hydro 2000 S
Example:
GRUNDFOS Hydro 2000 MS.
Four pumps and a diaphragm tank.
PFU 2000
One pump in operation.
H
H
stop
H
set
Three pumps in operation.
H
H
stop
H
set
GRUNDFOS Hydro 2000 MS maintains an
almost constant pressure through cutting in/
out the required number of pumps.
The operating range of the pumps will lie
between the lines H
and H
set
pressure). The cut-out pressure cannot be
set but is calculated automatically.
Changeover among the pumps is automatic
and depends on load, time and fault.
Example:
GRUNDFOS Hydro 2000 MSH.
One half-size pump, three full-size pumps
and a diaphragm tank.
PFU 2000
One half-size pump in operation.
H
H
stop
H
set
Q
One half-size pump and one full-size
pump in operation.
H
H
stop
H
set
Q
GRUNDFOS Hydro 2000 MSH maintains an
almost constant pressure through cutting in/
out the half-size pump and the full-size
pumps.
(cut-out
The half-size pump will always start first.
stop
The half-size pump will be cut out again
when a full-size pump is cut in.
The operating range of the pumps will lie
between the lines H
pressure). The cut-out pressure cannot be
set but is calculated automatically.
Changeover among the full-size pumps is
automatic and depends on load, time and
fault.
Q
Q
and H
(cut-out
set
stop
7
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