9. Lift up Isolation valve handle locking plate.
a. Close Isolation valve by turning the handle 90°.
Isolation valve is properly closed when the handle points away from the sensor
and the locking pla
te drops down over the handle.
b. Open the blow-out valve under Isolation valve for box cleaning to get rid of any
pr
ocess liquid inside the Isolation valve.
Beware of splashing. Some process liquid will leak out through
the small ball v
alve.
WARNING!
Do not proceed until you have completed this step.WARNING!
PR-23 Series User Guide
IM-EN-PR23-E
202
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