Spirax Sarco PLC - Steps for Manual Blowdown Valve Operation

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Manual control of the Bottom Blowdown Valve
For manual control of the bottom blowdown valve proceed with the following steps:
Turn the “cycle” selector into position (manual control) and select Screen 14 (bottom blowdown control).
If the selector is turned in position (Automatic control) an alarm status is obtained as displayed on Screen 15.
In these situations switch the selector in position to reach the condition displayed on Screen 7.
Select Screen 14 with
^
and
^
keys.
Press (ON)
^
and (OFF)
^
keys to open or close the bottom blowdown valve.
When the valve is closed (travel limit switch ON is active) the external prole only of the valve graphic will
be displayed. When instead the valve is open (travel limit switch OFF is active) the screen will show the
complete graphic of the valve.
Screen 14 Screen 15