Lync WQ-SF
SECTION 3: Operation
L- OMM-004_A
•
2/23/2022
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25
of
54
installed) will begin in Standby. At least one unit is In Service at all times. When flow rate to the
Primary Service Unit increases to a user specified rate, the next unit in sequence will move from
Standby to Service. As the flow rate falls below the user specified rate, subsequent tanks will
return to Standby. When the Primary Service Unit regenerates, the next unit in sequence will
become the new Primary Service Unit. As each units capacity is reached, the controller will
initiate a Regeneration of that unit. Depending on the number of units in the system and flow
rate demand, the regenerated unit will then be placed either into Standby or Service. Only one
unit will be in Regeneration at a time.
Example of Progressive Flow Operation by System 14-Demand Recall System
1.
One Valve is in service at all times (the “primary valve”).
2. The total flow rate to the primary valve increased past the first trip point programmed rate.
The flow stayed past the trip point delayed time. The next valve (least volume remaining)
changes from Standby to In Service. This valve then splits the total flow between two meters.
3. The flow rate demand decreased below the first trip point. The valve returns to Standby.
4. Total flow rate demand increased past a second trip point programmed rate. The second and
third valve (least volume remaining) changes from Standby to In Service. The total flow is split
between the three meters.
