TM 55-1930-209-14&P-3
4-7.2.3 Backwashing media filter 2.
a.
Position RO valves as indicated In table below,.
o = open
x = closed
1/2o = 1/2 open
A = position A
B = position B
C = position C
.
RO valve no
1
2
3
4
5
6
7
12
18
19
Valve Position
A
B
A
C
x
1/2o
x
o
o
x
b.
Follow procedures in steps 4-7 2 2b thru f.
4-7.2.4 Backwashing media filter 3
a.
Position RO valves as indicated in table below.
o = open
x = closed
1/2o = 1/2 open
A = position A
B = position B
C = position C.
RO valve no
1
2
3
4
5
6
7
12
18
19
Valve Position
A
A
B
C
x
1/2o
x
o
o
x.
b.
Follow procedures In steps 4-7 2 2b thru f.
4-7.2.5 Flushing media filters. After each media filter has been backwashed, flush all media filters simultaneously as
follows.
a.
Position RO valves as indicated in table below.
o = open
x = closed
1/2o = 1/2 open
A = position A
B = position B
C = position C
.
RO Valve No
1
2
3
4
5
6
7
12
18
19
Valve Position
A
A
A
C
o
o
x
o
o
x.
b.
Start seawater pump by turning pump ON/OFF/START switch on control station (Figure 3-1 ) to START and
then ON.
c.
After 10 minutes of flushing, stop seawater pump by turning pump ON/OFF/START switch to OFF.
d.
Prepare ROWPU for normal operations (paragraph 3-3).
4-7.3 HP pump assembly.
4-7.3.1 Diesel engine oil and filter change Change diesel engine oil and filter quarterly or every 250 meter hours,
whichever occurs first.
a.
Drain engine crankcase oil as follows.
(1)
Barge 1 - Open crankcase drain valve BD12 to drain ROWPU 1 engine and BD13 to drain ROWPU 2
engine.
(2)
Barges 2 and 3 - Connect one end of a utility hose to quick disconnect at crankcase drain Connect
other end to quick disconnect at crankcase drain oil disposal. Open valves BD12 and BD19 when
draining ROWPU 1 engine and BD13 and BD19 when draining ROWPU 2 engine.
(3)
Start bilge pump (TM 55-1930-209-14&P-15) and run until crankcase is empty Turn bilge pump off and
close valve BD12 or BD13 and BD19 Disconnect utility hose, flush It clean, and return to stowage. .
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