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connection for the screen of the screened cable.
Connection leads for the electropump P2.
U-V-W
Scrupulously respect the required correspondence and make a good earth
P2
connection for the screen of the screened cable.
Connection leads for the electropump P3.
U-V-W
Scrupulously respect the required correspondence and make a good earth
P3
connection for the screen of the screened cable.
Connection leads for the electropump P4.
U-V-W
Scrupulously respect the required correspondence and make a good earth
P4
connection for the screen of the screened cable.
SYSTEM-CONTROLLER electronic unit for command and control of the system with constant pressure and of
KL1
the inverter (see paragraph 8.3).
8.2 SET OPERATION
8.2.1 SET OPERATION BASED ON CONSTANT PRESSURE
KL1 electronic control unit powered
(SA4 selector switches set to SYSTEM-CONTROLLER, SA1, SA2 and/or SA3, SA5 aut. position)
The KL1 control unit provides for operation of the set as follows:
Starting and control of the GF1 inverter, with automatic changeover of the starting order of all the electric pumps.
Control and powering of the remaining electric pumps through: contactors.
2x16 character LCD display of system pressure and parameters, to be established in table 8.2.5.
Electric pumps protection, with signalling in alarm list and remote signals for:
Water failure,
-
overpressure,
-
lack of signal from pressure transmitter,
-
motor overload,
-
inverter overload.
-
Automatic switching to pressure switch control in the event of inverter failure, faulty sensor or malfunction of the KL1
control unit.
Control of the operating hours of each electric pump, with remote signalling of maintenance requirements.
Automatic shutdown of the pump powered by the inverter, after one minute that the flow rate has dropped to zero
liters/min.
Automatic restarting with a reference pressure reduced by 0.5 bar, to avoid too frequent start-ups.
ENGLISH
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