TM 10-4610-232-12
NOTE
OPERATOR STOPS PUMPS. SETS SE-
LECTOR SWITCH TO BACKWASH, AND
PUSHES INITIATE BUTTON. AFTER V14
SET ALMOST CLOSED.
BACKWASH STEP 1: DRAIN DOWN
ALL PUMPS STOPPED. AUTO VALVES CHANGE AS
SHOWN.
PRESSURE PUSHES WATER OUT OF MEDIA FILTER
UNTIL PROPER LEVEL IS REACHED.
CYCLE TAKES APPROXIMATELY 1 MINUTE.
PURPOSE: DURING THIS STAGE, WATER IS QUICKLY
PURGED FROM THE MEDIA FILTER. THE INITIAL BURST
OFTEN BLOWS MUCH OF THE TURBIDITY OUT OF THE
FILTER.
Figure 1-11. Backwash Cycle (Sheet 6 of 10)
(MODEL ROWPU-1 ONLY)
Change 12 1-20.1