TM 55-1930-209-14&P-1
s.
While closing valve RO7, ensure brine discharge flow is evident in brine flow indicator glass
(1)
If flow rate indicator Fl reading drops below 350 gpm during this operation, slowly open R07 and increase
engine speed until F1 reads 350 gpm.
(2)
Make sure readings do not exceed 108 at F2 and 820 psi at P5.
NOTE
During Initial startup or after a shutdown longer than 3 days, product water should
be discharged overboard until quality is acceptable.
t.
Allow product water from RO block to flow directly overboard through overboard discharge in void 3 port for at
least 15 minutes.
u.
While dumping product water overboard, perform the following checks:
(1)
Monitor pressure gauges and flow indicators for normal readings.
RO component
P1
P2
P3
P4
P5
F1
F2
Normal reading
About
More
More
No more
No more
About
About
100
than
than
than
than
350
108
65
53
835
820
(2)
Monitor MEDIA FILTER OK indicator light (Figure 13-6).
(a)
If light goes out, check pressure difference between seawater pump discharge pressure gauge P1
and media filters output pressure gauge P2.
(b)
If pressure difference exceeds 35 psi, backwash and flush media filters according to paragraph 4-
14.2 in TM 55-1930-209-14& P-3.
(c)
If difference is less than 35 psi, check indicator light. Replace bulb if faulty.
v.
When dumping product water overboard, monitor CARTRIDGE FILTER OK indicator light on control station:
(1)
If light goes out, check pressure difference between media fitters output pressure gauge P2 and cartridge
filter output pressure gauge P3.
(2)
If pressure difference exceeds 12 psi, change cartridge cage assembly according to paragraph 4-14.1.1 in
TM 55-1930-209-14& P-3.
(3)
If difference is less than 12 psi, check indicator light and replace bulb if faulty.
(4)
Monitor difference between HP pump discharge pressure gauge P4 and brine discharge pressure gauge
P5. If difference exceeds 25 psi, clean RO block membranes according to paragraph 4-14.4 in TM 55-
1930-209-14& P-3.
CAUTION
Operating temperature is critical in diesel engines. Shut down HP pump diesels
Immediately if EMS Indicates lubricating oil pressure Is too low or cooling water
temperature Is too high.
w.
When dumping product water overboard, monitor EMS video monitor.
(1)
SALINITY display page values (Figure 13-11) should read less than 1500 ppm.
(2)
HIGH PRESSURE WATER PUMPS (Figure 13-12) display page should show in normal white (non-blinking,
non-double intensity) light.
(3)
Monitor HP pump gauges (Figure 13-7, 2 of 2) as backup to the EMS.
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