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4.2.2 Manual Override Mode
a. To place the automatic switchover into manual override with Side A source on-line set Side A switch to
OPEN, then set the mode switch to MANUAL.
b. To place the automatic switchover into manual override with Side B source on-line set Side B switch to
OPEN and Side A switch to CLOSE, then set the mode switch to MANUAL.
4.2.3 EMPTY Indications
a. When Side A is manually on line and Side A source is depleted, the EMPTY light for Side A will flash.
4.2.4 CLOSED Indications
Side
Empty
Open
Closed
Stand-by
A
O
O
O
B
O
O
Valve A open and Valve B closed. Side B in stand-by.
•
•
•
Side
Empty
Open
Closed
Stand-by
A
O
O
*
O
B
O
O
Valve A closing. Side B in stand-by.
•
•
Side
Empty
Open
Closed
Stand-by
A
O
O
B
O
O
O
Valve B open and Valve A closed and Side A in standy-by.
•
•
•
Side
Empty
Open
Closed
Stand-by
A
*
O
O
B
O
O
Valve A open and Side A empty. Side B in stand-by.
•
•
•
Side
Empty
Open
Closed
Stand-by
A
O
O
B
*
O
O
Valve B open and Side B empty. Side A in stand-by.
•
•
•
Side
Empty
Open
Closed
Stand-by
A
O
O
B
O
O
Off mode - both valves closed and both sides in stand-by.
•
•
•
•
