16
Start, Operation, Alarm and Test
Switching equipment on
The interval time starts running once the system is switched on.
The interval time can be synchronized any time by closing one of the connecting valves (E or D), which
means that the purging time starts running and the interval time is reset to its initial value (e. g. 24 h or
72 h etc.).
During operation the standby time will always be started after the interval time has elapsed. The interval
time is immediately reset to its initial value (e. g. 24 h or 72 h etc.).
Interval time
The preset interval time and the remaining runtime are shown in
the start window of the display.
Note:
Indication of the level electrode (with ID) with its associated
control unit that is monitored by this logic unit.
Menu:
Starts a test run
Shows the message table
Shows the settings
Standby time
The standby time is indicated by the flashing text line and the
remaining standby time is shown.
The flashing valve symbol
prompts the boiler attendant to close
the water valve (E) in order to initiate the purging process.
During the standby time the purging process must be started. The process is started when one
connecting valve (E or D) leaves the final position “OPEN”. If the purging process is not initiated a stop
command will be sent to the control unit (NRS 1-40.1, NRS 1-40.2) after the standby time has elapsed.
The safety circuit will be interrupted.