TM 55-1930-209-14&P-2
a.
Perform before operation checks in paragraph 4-3.
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 close seawater valves as follows:
o = open
x = closed
- = not affected
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 closed (ON).
f.
Start seawater pump using local control switch in void 2 starboard.
g.
While draining ballast tank, perform during operation checks.
h.
Stop seawater pump when inclinometer in void 2 starboard indicates desired trim.
3-3.7
Supplying seawater for generator cooling
WARNING
Do not open seawater valve SW37 unless valve SW44 is open.
NOTE
See Figures 1-6, and 1-7, and 1-8 for seawater valve locations.
a.
Make sure seawater valve SW44 in ROWPU space port aft corner is open to vent seachest to the
atmosphere.
b.
Open valve SW37 in void 4 port.
c.
Open valves SW45 and SW46 to activate strainer pressure gauges (Barges 2 and 3 only).
d.
Open valve SW49 near void 4 starboard shell overboard discharge.
e.
Open seawater valves for generators to be used as follows:
(1)
Ship service generator 1: SW38, SW39
(2)
Ship service generator 2: SW40, SW41
(3)
Ship auxiliary generator (20 kW): SW42, SW43
NOTE
Coolant pumps on generator engines move seawater from seachest through the
engine coolant exchange tanks. The used seawater is discharged directly
overboard through seawater valve SW49.
f.
While operating, perform during operation checks.
3-16
