2-6. MULTIKEDIA FILTER BACKWASH (CONT)
13 Look at waste water from hose connected to C-10. When water is clear, open valve V-6 to increase flow rate
at FI-1 to fast backwash rate listed in step 11. Set BACKWASH TIMER to 2 minutes. (Turn past 10, then set
to second mark right of 0.) When timer sounds, slowly close valve V-6 to reach slow backwash rate.
14 Turn valve V-1 to SERVICE position. Turn valve V-2 to BACKWASH position.
15 Repeat steps 10 thru 13.
16 Turn valve V-2 to SERVICE position. Turn valve V-3 to BACKWASH position.
17 Repeat steps 10 thru 13.
18 Backwashing is now completed.
19 Idle engines for a few minutes.
20 Flip boost pump control switch down. Engine will stop.
21 Flip raw water pump control switch down. Engine will stop. Shutdown is now completed.
22 Reconnect hose to C-4 and C-5.
23 Place system in normal operation mode by following startup procedure (para 2-5).