Spirax Sarco PLC - Setting Blowdown Interval in Automatic Mode

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Set-up of the bottom blowdown period
In “automatic” mode, press the
^
key to enter the screen shown on Screen 22.
Press
^
or
^
key to set the interval duration (seconds) until the screen displays the blowdown time required
value. The interval is selectable from 3 to 60 seconds with one-second increments.
Press
^
and
^
keys to enter the required value.
Press
^
to shift the cursor on the digit with value in tenth.
Then press
^
and
^
keys to enter the required value.
Again press
^
to shift the cursor on the digit with the value in hundreds.
Press
^
and
^
keys to enter the required value.
Finally press the OK key and afterwards the
^
key to shift to the next setting.
Note: to disable the function set both the parameters to zero (0).
When the set-point screen setting is complete, press the OK key to conrm; then shift with the v key to the
screen shown in Screen 23 (A, B, or C referring to the typology of the valve control).
Check that the cycle selector is turned to “automatic” position.
Press the “START” key to start the automatic regulation program.
The RUN led is now lighted up on the display right side.
The selected screen displays the main values relevant to automatic operation (referring to the model of the
valve control).
Screen 23A