Operation - DGFLOW PRESFLO VARIO Betriebsanleitung

Operation

1
No power supply
Press briefly or hold down
= nothing happens
Power is restored = PRESFLO
resumes NORMAL SERVICE and
starts the pump (if necessary).
2a
NORMAL SERVICE: the pump is inactive.
PRESFLO
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 STAND-
BY. For instructions on how to reactivate
the pump, see point 3.
A tap is turned on = as soon as the
pressure falls below the start-up pressure
(Pm), the pump is started.
2b
NORMAL SERVICE: the pump is running
assembly pressure is normally higher
than the START-UP pressure, but it may
also be lower.
Press briefly or hold down
= the pump is stopped and put
STAND-BY.
For instructions on how to reac-
tivate the pump, see point 3.
The taps are turned off = Sif there is
no flow for a few seconds, the pump is
stopped.
NOTE 2 - EXCESSIVE STARTS = the repeated stopping and starting of
the pump at intervals of less than 1 minute from each other. This occurs
when the flow rate is less than 2 litres/min. This may cause damage to the
pump. In event of small leaks (dripping), PRESFLO
guarantees that the pump starts/stops at time intervals of over 1 minute
(less than 60 starts/hour) and that FREQUENT START-UP errors do not
occur. In the event of a major leak or extended use at excessively low flow
rates (less than 2 litres/min), the pump may be started/stopped as often
as once every few seconds, putting the pump at risk of damage. In this
case, after about 40 minutes, PRESFLO
30 minutes (in order to let it cool down) and indicates an ERROR message.
If the time interval between the starts-stops is more than 10 seconds (and
therefore poses less of a risk to the pump), PRESFLO
to be used for more than 30 minutes. Once that enough time has passed
to allow the pump to cool down it is restarted AUTOMATICALLY. The pump
may be restarted MANUALLY any time.
PRESFLO is switched off.
®
®
The system is pressurised.
All taps are turned off. There is
no demand for water.
detects an assembly pressure
®
The assembly requires water.
One or more taps are turned on.
PRESFLO detects a flow; the
®
's water accumulator
®
stops the pump for the following
®
will allow the pump
®
= Off = On
2c
NORMAL SERVICE: pump during shutdown
closed. The pump is still in operation.
The system is pressurized. PRESFLO
detects a system pressure higher than
the start-up
pressure (Pm) and no flow.
Press briefly or hold down =
the pump is stopped and put in
STAND-BY
To reset see point 3.
If the absence of flow lasts for a few
seconds the pump is stopped
3
STAND-BY
remain inactive until a new
command is given.
Press briefly
= nothing happens.
Hold down
= the pump resumes NORMAL SERVICE.
See points 2a - 2b.
4a
ERROR: stopped temporarily due to DRY RUNNING
pump is dry running and has therefore
stopped it TEMPORARILY.
Press briefly = the pump is started and
manually and resumes NORMAL SERVICE.
See points 2a - 2b.
Hold down
= the pump is put STAND-BY.
For instructions on how to
reactivate the pump, see point 3.
ERROR: temporary shut down due to FREQUENT
4b
START UP
pump starting-up too often and has therefore
stopped it TEMPORARILY.
Press briefly = the pump
is started and manually and
resumes NORMAL SERVICE.
See points 2a - 2b.
Hold down
= the pump will not restart and goes OUT
OF ORDER. The pump is put STAND-BY. For
instructions on how to reactivate the pump,
see point 3.
= Flashing
The system has just
ceased to require
water. All taps are
®
The pump has been
stopped manually.
The pump will
See NOTE 1)
PRESFLO has
®
detected that the
(see NOTE 2)
PRESFLO has
®
detected that the