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set the maximum current value wil l be displayed; no action can be carried out until the maximu m
absorption value has been set.
setting)
"2 <-" to use the auxili ary contact to remote control the start stop of the motor pump.
"3 X2" to use the auxili ary contact to control a second pressure set-point (Pmax2).
Further information on the wiring and on the three different operational modes is contained in the
"AUX ILIARY CON TAC T CONNEC TION" section.

ALARMS

disabled. Before disabling, though, ensure it will not cause damage to the pump or system (see section
titled "DESCRIP TION OF THE PAR AME TER S AND THE SC REEN PAGES").
electric system. Every time thi s alarm appears, it is advisable to have the system checked by skill ed
personnel to prevent electrical damage. To clear the message from the display, simply press the "reset"
button in the centre.
When this error appears, the electrical system must be controlled by qualified personnel as soon as
possible. The error can only be cleared by disconnecting the device from the electric power supply and
solving the causes of the fau lt. Attempting to start the inverter when there is an output short circuit may
seriously damage the device and be dangerous for the user.
Auxili ary contact: use this parameter to select the function to be
associated with the auxili ary contact; the values that can be set are the
following:
"1 <->" to use the auxi liary contact to connect two Press•o•Matic
devices as part of a twin pressurisation unit (m anufacturer's default
Dry runni ng: this message appears when the system is stopped
following a pu mp intake water short age. If the auto-reset function has
been enabled, the Press•o•Matic will automatically make a series of
attempts to test whether the water supply has returned. To clear the error
status, press the "reset" button in the centre.
Serious leakage: this message appears when the pump h as been stopped
following a closely spaced series of restarts caused by a possible leak in
the system. To restore the system status once the cause of the alarm has
been established, press the "reset" button in the centre. If this condition
occurs repeatedly, impairing normal pump operation, this feature can be
Inverter error: this alarm appears when the inverter is locked following a
power surge or drop outside the limits or overheating with ensuing motor
pump shutdown. Although the system is restored automatically approx. 3
minutes after the error condition has cleared, the message remains on the
screen to warn the user that there might be a failure in the hydraulic and/or
Short Ci rcuit: This message will appear on the screen when there is a
short circuit at the inverter output. the short circuit may be caused by the
incorrect connection of the electric motor, faulty electrical isolation of the
cables that connect the motor pump to the devices or failure of the electric
motor of the pump.
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