MNL000447.doc
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09/19/2016
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active or “secured‟ until an operator reenters the Manual Mode
window. While manual mode is „secured‟, Manual Mode will
be the only selectable option on the Main Menu.
Distribution System must not be left unattended
in Manual Mode, as access to the system in
Manual Mode is open to anyone.
8.6.3 General Principles of Manual Operation
Open valves in sequence starting at the first valve downstream of the pressure
source and continuing to the next valve in sequence.
For vacuum operation, open the valve closest to the vacuum source and continue
to open the next valve in sequence.
Close valves in reverse order.
Monitor pressures on the touch screen display frequently.
Consider all possible consequences before opening or closing a valve.