Manual Backflush Procedure.

TM 55-1915-200-10

b. Open bilge suction valves (1 and/or 2).

2-5.16. Dirty Oil/Oily Bilge Piping System. (FIGURE 2-

158) 2-5.16.1. Start Operation.

c. Open discharge valve (7) to sludge tank.

a. Close all valves in dirty oil/oily bilge piping

d. Open overboard discharge valve (17).

system. Refer to FIGURE 2-158.

e. Open discharge valve (18) to oil content

b. Open discharge valves (6, 9, 12, 14, 26, and

meter in bilge alarm panel (19).

35) as needed to drain sumps of main engines,

reduction gears, ship service diesel generators or

f. Open freshwater back flush valve (15).

lubricating oil setting tank.. Close discharge valves

when sumps are empty.

g. Set OFF/ON switch to ON position (8,

FIGURE 2-157).

Connect discharge hose to discharge

connection on the main deck.

d. Open sludge tank discharge valve (19).

NOTE

e. Open sludge pump discharge valve (28).

Oily water separator is now

operating in an automatic mode.

f. Open sludge pump suction valve (31).

2-5.15.2. Manual Backflush Procedure.

g. Depress pump start switch (30).

a. Set OFF/ON switch to OFF position (8,

h. Observe discharge hose outlet, if no oil is

FIGURE 2-157).

discharged within 30 seconds, press the pump stop

switch (30). Refer to unit maintenance.

b. Close discharge valve (7, FIGURE 2-156) to

sludge tank.

i. Determine tank level by sounding tank at

sounding tube (38).

c. Open manual backflush discharge valve (5)

to bilges.

j. Press pump stop switch (30) when sludge

tank is empty or pump loses discharge output.

Turn solenoid of manually operated

backflush valve hand wheel (12) in a clockwise

2-5.16.2. Stop Operation.

direction. Handwheel is located on the bottom of the

solenoid valve.

a. Press pump stop switch (30).

b. Close all valves in dirty oil/oily bilge piping

NOTE

system (FIGURE 2-158).

Manual backflush is now in progress.

Disconnect and stow discharge hose.

2-443