2a
1
No power supply
PRESS BRIEFLY
or
HOLD DOWN
= nothing happens
Power is restored
= PRESFLO
®
resumes NORMAL
SERVICE and starts the pump
(if necessary).
A tap is turned on
= as soon as the pressure falls below
the start-up pressure (Pm), the pump is
started.
NORMAL SERVICE:
The pump is inactive.
The system is pressurised. All taps are
turned off. There is no demand for water.
PRESFLO
®
detects an assembly pressure
higher than that of the start-up pressure
(Pm) and no flow.
PRESS BRIEFLY
= the pump is started manually and runs
for a few seconds before stopping again.
HOLD DOWN
= lthe pump is put OUT OF SERVICE. For
instructions on how to reactivate the
pump, see point 3.
PRESS BRIEFLY
or
HOLD DOWN
= the pump is stopped and put OUT OF
SERVICE. For instructions on how to
reactivate the pump, see point 3.
NORMAL SERVICE:
The pump is running.
The assembly requires water. One or
more taps are turned on. PRESFLO
®
detects a flow; the assembly pressure
is normally higher than the START-UP
pressure, but it may also be lower.
EN
ON
OFF
OFF
OFF
Operation
PRESFLO
®
is switched off.
2b
ON
ON
The taps are turned off
= Sif there is no flow for a few seconds,
the pump is stopped.
