Grundfos EPC 300, Installation And Operating Instructions Manual

Page: 10 / 180

English (GB)
10
8.2 Status indications
The operating status of the fire pump set is indicated by means of
three indicator lights under "Status". The following table provides
an overview of status indications. Status indications can be
forwarded to a building management system as potential-free
indications via an output relay.
8.3 Fault indications
Faults are indicated by means of the two indicator lights under
"Alarms". The following table provides an overview of fault
indications. Fault indications can be forwarded to a building
management system as potential-free indications via an output
relay. Fault indications do not have to be recorded. The indicator
lights go out as soon as the fault has disappeared.
Status
Indicator light
Potential-free signal
Status Text
Mains voltage correct. On Power supply AR1 activated
The pump has received a start request from the
pressure switch or the level switch in the priming tank.
On Pump on demand AR2 activated
The pump is running (automatic or manual start). On Pump running AR3 activated
Checking the function of pressure switch 1. On Pressure switch test -
Checking the function of pressure switch 2. On Pressure switch test -
P1
P1
Status
Indicator light
Potential-free
signalling
Status Text
Phase failure. No power supply. Off Power supply AR1 not activated
Fault in the power supply to the motor. On Power failure AR4 activated
The pump does not start despite start request, which
means the start relay has energised, but the DI4 contact
remains open.
On Failure to start AR5 activated