10
Probe cleaning / conditioning
The operator has started a cleaning cycle.
2.7 Information line details (in priority order):
Alarm:
The operator is testing the alarm relay.
The PV value has exceeded the alarm level.
Indicates the alarm relay has been de-energised/released.
TDS blowdown valve (Total Dissolved Solids):
The TDS is has increased above the Set Point (SP), and the blowdown valve is
being pulsed open for 10 seconds on, and 20 seconds off, until the TDS drops
below the hysteresis of the SP.
Indicates the blowdown relay is energised.
The TDS has increased above the Set Point (SP), and the blowdown valve has
been opened until the TDS drops below the hysteresis of the SP.
Is displayed if a during a purge period (valve open). At the end of this time the
product will either indicated 'Hi' or restart another purge interval.
The operator is testing the blowdown valve.
2.8 Alarm /error display messages
If an error occurs, an error menu 'ErX' will be displayed at the end of the parameter screens.
Pressing and holding the
OK
button for 3 seconds can clear a message and re-energize the
alarm relay(s). If the cause has not been corrected, the same error message will reappear. If
the error or alarm is of a latching type, only the message will disappear. The alarm relay will
remain de-energised until the correct passcode is entered in the commissioning menu. If more
than one error or alarm has occurred, the next message will appear (in priority order) after the
previous one has been cleared. See Section 9 - Fault finding.
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