If the raw water turbidity is now less than the lowest reading recorded during the current mission, start at a
polyelectrolyte stroke setting of 1/2 of the present setting and carry out the start-up optimization procedure in
The turbidity of lakes and wells will remain quite constant unless it rains for a long period.
Rivers change very rapidly with rain (and perhaps tide). Sea water tends to change with
wind speed and direction.
Clean basket strainer.
When basket strainer is blocked or needs cleaning, the basket strainer pressure drop
sensor will turn on warning horn and yellow STRAINER PLUGGED light (1), Figure 2-56.
Push ALARM SILENCE (2).
Shutdown ROWPU to standby (para. 2-18) and push SYSTEM RESET (3).
Figure 2-56. Replacing Outer Basket Strainer Screen
(MODEL WTA-060 ONLY)
Change 7 2-107