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DGFlow Presflo Manual

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Problems
PRESFLO
®
will not turn on.
Possible causes Solutions
No power Check the electrical connections
The pump will
not start when
a tap is turned on.
PRESFLO
®
model with an inadequate
start-up pressure (Pm) for the chosen
application.
Relocate PRESFLO
®
to another position
Install a model with a higher start-up pressure (Pm)
Faulty electrical connections or
pump out of service. Check the electrical connections and that the pump is working
Signals
OFF
OFF
ON
OFF
ON
ON
Problemi
PRESFLO
®
non si accende
Possibili cause Azioni correttive
Mancanza alimentazione elettrica Controllare le connessioni elettriche
La pompa
non si avvia
all’apertura
di un rubinetto
Modello PRESFLO
®
con pressione di
marcia (Pm) non adeguata al tipo di
installazione
Modificare la posizione di PRESFLO
®
Installare un modello con pressione di marcia (Pm) maggiore
Connessioni elettriche difettose Controllare le connessioni elettriche tra PRESFLO
®
e pompa
PRESFLO
®
in “FUORI SERVIZIO” Rimettere PRESFLO
®
in servizio (vedere Paragrafo Utente -
funzionamento punto 3).
La pompa eroga
portata nulla
o bassa
Parziale occlusione di filtri o tubazioni Controllare l’impianto idraulico
La pompa si
ferma
e riparte in continuazione
Perdite idrauliche nell’impianto
inferiori alla portata di arresto Controllare le connessioni idrauliche ed eliminare le perdite.
Se non fosse possibile eliminare la perdita, installare un vaso di
espansione
La pompa
non si ferma
La pressione massima dalla pompa è
insufficiente Sostituire la pompa con una avente caratteristiche adeguate
Installare un modello con pressione di marcia (Pm) inferiore
Sono presenti perdite nell’impianto
superiori alla portata di arresto (Qa) Controllare che tutte le utenze siano chiuse e che non siano
presenti perdite nell’impianto
La valvola di non ritorno di PRESFLO
®
rimane aperta Controllare che la valvola non sia bloccata da corpi estanei e se
necessario pulirla
Indicazioni
OFF
OFF
ON
OFF
ON
ON
ON
ON
La valvola di PRESFLO
®
non si apre
completamente Controllare che la valvola si muova liberamente e se
necessario pulirla
ON
ON
OFF
ON
ON
ON
PRESFLO
®
in arresto temporaneo per
“MARCIA A SECCO” dovuto a mancanza
d’acqua
Attendere il riavvio automatico o avviare manualmente premendo
START (vedere Paragrafo Utente - funzionamento punto 4a)
ON
Lampeggio
ON
Lampeggio
PRESFLO
®
in arresto temporaneo per
“AVVIAMENTI FREQUENTI” Attendere il riavvio automatico o avviare manualmente premendo
START (vedere Paragrafo Utente - funzionamento punto 4b)
Eliminare eventuali perdite dell’impianto o installare un vaso di
espansione
IT
EN
ON
Lampeggio
PRESFLO
®
“OUT OF SERVICE” Reset PRESFLO
®
(See Operation, point 3).
The pump delivers
no or low pressure. Filters or pipes may be partly blocked Check the water pipes
The pump stops
and starts
repeatedly.
Leaks within the system (less than
the shut-off flow rate Qa) Check the hydraulic connections and repair any leaks
If a leak cannot be repaired, install an expansion tank
The pump will
not stop.
Maximum pump pressure is insufficient Replace the pump with one with more suitable characteristics
Install a model with a lower start-up pressure (Pm)
The flow rate is higher than the shut-off
flow rate (Qa) Make sure that all taps are turned off and that there are no leaks
within the system
PRESFLO
®
’s check valve will not close Check that the valve is not blocked by any foreign objects and
clean if necessary
ON
ON
ON
PRESFLO
®
’s valve will not open
completely Check that the valve is not blocked by any foreign
objects and clean if necessary
ON
ON
OFF
ON
ON
ON
PRESFLO
®
in temporary shut down due
to “DRY RUNNING” due to lack of water Wait for the automatic restart or press START to restart manually
(See Operation, point 4a)
ON
Flashing
ON
Flashing
PRESFLO
®
in temporary shut down due
to “FREQUENT START-UP” Wait for the automatic restart or press START to restart manually
(See Operation, point 4b). Remove any cause of leakage from
system or install an expansion tank
Flashing
… 10 …


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