TM 55-1925-285-13&P
OPERATOR, UNIT, AND DIRECT SUPPORT MAINTENANCE
OIL WATER SEPARATOR FOR
INLAND AND COASTAL LARGE TUG (LT)
OPERATION UNDER UNUSUAL CONDITIONS
INITIAL SETUP:
Equipment Conditions:
Personnel Required:
Fire and general service pump providing general
One Watercraft Engineer, 88L
service water to the vessel (TM 55-1925-273-
10).
References:
TM 55-1925-273-10
WP 0015 00
SECURITY MEASURES FOR ELECTRONIC DATA
No electronic data are used or stored by any of the Oil Water Separator (OWS) or Oil Control Monitor (OCM)
components.
UNUSUAL OPERATING CONDITIONS
The following operating conditions are detailed in this work package:
1. OCM Operation in TEST Mode. The OCM should only be operated in the TEST mode when verifying the
OCM system operation, troubleshooting, or performing maintenance.
2. Manual Backflush of the OWS. Manual backflush of the OWS is performed during system maintenance or in
the event of the backflush solenoid inlet valve failure.
OCM OPERATION IN TEST MODE
! CAUTION
The OCM should only be operated in the TEST mode when verifying the OCM system
operation, troubleshooting, or performing maintenance. In the TEST mode, the OCM
will operate similarly to the AUTO mode, except that it will operate continuously, regard-
less of pressure at the sample inlet. This means that in the TEST mode, the OCM could
be operated with no flow through it, causing damage to the OCM after just 2 minutes.
1. Set the OWS switch (figure 1, item 1) on the OWS control panel (figure 1, item 2) to OFF.
2. Set to ON the OILY WATER SEPARATOR circuit breaker (figure 2, item 1) in the 120V distribution
panel No. 4. The green POWER AVAILABLE indicator (figure 1, item 3) will illuminate to indicate
that the OWS control panel has power available.
3. Align the OWS, the Oily Bilge (OB), and OCM valves as indicated in table 1 and figure 3.
4. If the OWS and the system inlet piping are not completely filled with water, purge all air from the system by
performing a manual backflush, as described later in this work package.
5. Ensure that OCM OPERATION SELECTOR Switch A1S1 (figure 4, item 1) is set to OFF.
6. Set to ON the OIL CONTENT MONITOR circuit breaker (figure 2, item 2) in the 120V distribution panel No.
4. The red indicator (figure 5, item 1) on the OCM diverter valve position indicator (figure 5, item 2) will
illuminate to signal that the OCM has power available.
0006 00-1