Gyrocompass System.

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FIGURE 2-116. Marine Sanitation Device Supply and Discharge Piping System (Sheet 1 of 2)

TM-55-1905-223-10 Landing Craft Utility (LCU 200 Class) NSN 1905-01-154-1191 Manual

FIGURE 2-117. Marine Sanitation Device.

TM 55-1905-223-10

(b) Open SW-14, ISOLATION-MSD (4).

(d) Open SEWAGE INLET VALVE (8).

(e) Ensure PL-1, BLACKWATER DIVERTER TO MSD or OVBD (6) and PL-2, GRAYWATER

DIVERTER TO MSD or OVBD (5) are aligned to flow to MSD.

(f) Open PL-4, OVBD DISCH (2) and PL-3, MSD-OVBD DISCH (3).

(2) At Marine Sanitation Device (FIGURE 2-117).

(a) Set DEMAND switch (2) to DEMAND position.

(b) Set BACKWASH switch (3) to WITHOUT BACKWASH position.

NOTE

If NORMAL-RESET/DISABLE switch (1) is in RESET/DISABLE

position, the unit will start to operate.

(d) On power panel P204 set circuit breaker 2 to ON position.

CAUTION

Red COMMODE WARNING LIGHT (4) must be off before flushing.

NOTE

COMMODE WARNING LIGHT is located in starboard companionway 01 deck.

2-10. Gyrocompass System.

a. Gyro Compass MARK 27 MOD 1.

NOTE

Gyro Compass startup procedure should begin at least 2 hours

before the compass is to be used to allow proper settling. The

compass should also have been stopped for a minimum of 1/2

hour before restarting.

(1) In Pilothouse, Power Panel EP103, set MK2T GYRO PWR CONV UNIT circuit breaker 1 to ON

position.

(2) On MK 37 MOD E Transmission Unit, set POWER switch (1, FIGURE 2-118) to UP position.

(3) On Gyro Compass MARK 27 MOD 1 Electronic Control Panel (FIGURE 2-119), set RPTR switch

(7) to OFF position.