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 TM 55-1905-223-10
(8)
Open OWS-7, 3RD STAGE PRESS GAUGE (15).
(9)
Open OWS-17, RECIRC TO DIRTY OIL TK (16).
(10)
Open OWS-18 OVBD DISCH (17) and OWS-19, OVBD DISCH (18).
(11)
On Oil Water Separator Control Unit (FIGURE 2-172), set OFF-ON-POWER switch (3) to ON position.
(12)
Set AUTO-MAN-OFF PUMP switch (2) to AUTO position. The PUMP indicator (1) lights when pump is
on.
NOTE
If water pump fails to start, it is possible that the internal air shutdown float switch
in the first stage has tripped due to an accumulation of air in this stage.
(13)
Reset AUTO-MAN-OFF PUMP switch (2) to MAN position.
NOTE
This will override the shut down function of the internal float switch and will operate
the oil pump to evacuate entrapped air. Leave the pump switch in manual position
only for a short time.
(14)
Set AUTO-MAN-OFF PUMP switch (2) to AUTO position when air has been evacuated.
(15)
On Oil Water Separator monitor PRESSURE GAUGE-SECOND STAGE PRESSURE GAUGE- THIRD
STAGE INLET and PRESSURE GAUGE-THIRD STAGE OUTLET for differential pressure buildup.
NOTE
Differential pressure is the difference in pressure between the input pressure of a-
stage and the output pressure of that stage. A rapid rise in the differential pressure
for the second stage indicates that the filter elements are being blocked by solid
(16)
When desired level is reached in bilge, set AUTO-MAN-OFF PUMP switch (2, FIGURE 2-172) to OFF
position.
NOTE
Unless the system is to be shut down for an indefinite period, DO NOT turn OFF
the OFF-ON POWER switch.
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