Wilo -SiFire FIRST Installation And Operating Instructions Manual page 35

9.1.2 Operating mode
9.1.3 Procedure for commissioning
Fig. 11.3
9.1.4 Main menu
Fig. 11.4
Installation and operating instructions Wilo-SiFire FIRST
Electric pump switchgear
Line voltage
8
Motor working hours
9
Electric pump status
10
ƒ
The device is normally in automatic mode.
ƒ
The mode selection is obtained by means of the external selector switch.
ƒ
When the switchgear is not in automatic mode, the red front LED (d) lights up to in-
dicate that it is not ready to start from the pressure switch signal.
Automatic mode:
ƒ
In this mode it monitors the status of the pressure switches and in case of lack of
detected pressure it proceeds with the starting of the electric pump.
ƒ
The lack of the signal (opening of the contact) of the pressure switches is high-
lighted by the flashing of the backlight of the display (visible from a great distance)
and by the flashing word PRESS on the display synoptic, as well as by the turning on
of the front LED Start request.
ƒ
In case of activation of the priming tank float, "LIV.ADESC." is flashing on the display
screen.
ƒ
The correct starting of the electric pump is monitored through its electrical para-
meters (presence of balanced currents of adequate intensity, active power within
the nominal range).
ƒ
The status of the pump started is highlighted by the corresponding green LED on the
front panel.
ƒ
Once started automatically, the motor is no longer stopped unless the pressure
switches have been reset and an operator has performed the stop by pressing the
front STOP button.
Manual mode:
ƒ
When the device is in manual mode (situation highlighted by the red LED and the
message on the display screen) it does not monitor the status of the pressure
switches.
ƒ
In this operating mode it is possible to activate the manual "START" button to verify
the correct functioning of the system during the verification and maintenance oper-
ations.
Emergency operation:
ƒ
When the unit is in emergency mode, the pump starts even if the HMI is faulty.
Test procedure:
ƒ
The periodic verification procedure involves the simulation of pressure loss of the
system with the consequent attempt to start automatically.
ƒ
From this page, by pressing the key
on the front panel.
ƒ
From this page, pressing the key
of signal from the pressure switch.
ƒ
Each time the tests are performed, the date of execution is saved and shown on the
display.
Description
, it is possible to test the signalling LEDs
, will start the motor by simulating the lack
en
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