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 TM 55-1925-273-10-1
0080 00
ENGINE ROOM
AMS-2
3
1
2
ROWPU 2
ROWPU 2
ROWPU 1
ROWPU 1
FLOW CONTROL
SYS. CON.
FLOW CONTROL
SYS. CON.
PANEL
PANEL
Figure 23. ROWPU System Valves as Viewed from Above
MEDIA FILTER BACKFLUSH
NOTE
Always perform the media filter backflush procedure before and after all ROWPU operations. If
differential pressure exceeds 20 PSI (1.4 bar) as indicated by the difference between the media
filter INLET PRESSURE and OUTLET PRESSURE gauges, secure ROWPU operation, and
perform media filter backflush.
1.
CLOSE the following valves:
a.
RO-V-2 (figure 20, item 2), media filter supply
b.
RO-V-3 (figure 20, item 3), media filter discharge
c.
RO-V-1-1 (figure 21, item 3), ROWPU 1 inlet sea water supply
d.
RO-V-2-1 (figure 21, item 4), ROWPU 2 inlet sea water supply
e.
RO-V-4 (figure 20, item 4), media filter bypass
f.
RO-V-5 (figure 21, item 5), cleaning supply
g.
RO-V-11 (figure 20, item 5), media filter drain
2.
OPEN the following valves:
a.
RO-V-10 (figure 20, item 6), media filter backflush valve
b.
RO-V-1 (figure 20, item 1), main sea water supply
3.
Verify that RO-PG-1 (figure 8, item 7), general service pressure, indicates a minimum of 30 PSI (2.4 bar).
0080 00-19
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