TM 55-1930-209-14&P-1
d.
Open or dose seawater valves as follows,
o = open
x = closed
- = not affected
Seawater (SW) valve no:
Seawater supplied by:
1
2
4
5
6
9 10 16 17 19 21 29
Seawater pump 1 only
x
-
o
o
o
x
o
Seawater pump 2 only
x
o
x
o
o
x
o
o
x
o
Both seawater pumps
x
x
o
o
o
o
o
o
o
o
x
o
e.
Perform steps e thru i in paragraph 11-12.5.1.
11-12.6 Draining ballast tank (to correct a stem high condition)
NOTE
Draining ballast tank requires only one seawater pump. The other seawater pump
may be used to supply seawater to one ROWPU unit. See Figures 11-1 and 11-2 for
seawater valve locations.
a.
Perform prestart procedures in paragraph 11-11.
b.
Open seawater valves SW31 thru SW34 in void 2 starboard.
c.
Close seawater valves SW4, SW5, SW6, SW11, SW12, SW20, SW21, SW24, SW25, and SW29 in void 2
starboard.
d.
Open or dose seawater valves as follows:
o = open
x = closed
- = not affected
Seawater (SW) valve no:
Ballast drained by:
1
2
7
8
9
10
16
17
18
19
Seawater pump 1 only
x
-
o
x
o
-
o
x
o
o
Seawater pump 2 only
-
x
x
o
-
o
-
o
o
x
Both seawater pumps
x
x
o
o
o
o
o
o
o
o
e.
Make sure switchboard circuit breakers P6 and P7 are dosed (ON).
f.
Start seawater pump using local control switch in void 2 starboard.
g.
While draining ballast tank, perform during operation checks in steps i thru m in paragraph 11-12.1.1.
h.
Stop seawater pump when inclinometer in void 2 starboard indicates desired trim.
11-12.7 Supplying seawater for generator cooling
WARNING
Do not open seawater valve SW37 unless valve SW44 is open.
NOTE
See Figures 11-5, 11-6, and 11-7 for seawater valve locations.
a.
Perform prestart procedures in paragraph 11-11.
b.
Make sure seawater valve SW44 in ROWPU space port aft comer is open to vent seachest to the atmosphere.
11-27
