310.6002.0 -
14
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Side
Empty
Open
Closed
Stand-by
A
O
O
B
O
O
Side A and Side B sources empty and both valves closed.
4.2.5 Emergency Shutdown/Failure Indications
Side
Empty
Open
Closed
Stand-by
A
O
*
B
O
*
Side A and Side B sources empty - system shutdown. Requires manual reset to initiate automatic
mode.
•
•
•
•
•
•
4.2.4 CLOSED Indications (cont.)
Side
Empty
Open
Closed
Stand-by
A
O
O
*
B
O
O
*
Remote shutdown of both valves - automatic switchover is connected to external alarm devices
such as gas, fire or smoke detectors.
•
•
Side
Empty
Open
Closed
Stand-by
A
*
*
B
Valve A failure, limit switch open, system halted.
Side
Empty
Open
Closed
Stand-by
A
B
*
*
Valve B failure, limit switch open, system halted.
Side
Empty
Open
Closed
Stand-by
A
O
O
O
O
B
O
O
O
O
Re-powering requiring manual reset, check power, fuse. If condition persists, contact
De Nora Water Technologies Service Department.
•
•
