2-22. SHUTDOWN TO TEMPORARY SECURED STATUS - UP TO 3 DAYS. Use this shutdown procedure when the ROWPU will be
shut down for 3 hours to 3 days.
525 gallons of potable water will be used in this procedure. Be sure water is available.
Before shutdown, be sure that the 5 gallon can is filled with product water to use in the
polyelectrolyte tank during next start-up.
This backwash is critical when operating in brackish or seawater. Failure to backwash
system will result in piping/equipment corrosion and failure.
Backwash Media Filter. Backwash media filter with product water in the clean/flush tank.
Fill clean/flush tank with potable water.
Figure 2-52. System Flush
2-96 Change 12