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 TM 55-1905-223-10
2-3. General. The following information is provided for the guidance of personnel responsible for operation
of the LCU. It is essential that operator/crew know how to perform every operation of which the equipment is
capable and to coordinate the basic motions to perform the specific tasks for which the LCU was designed.
Since nearly every job presents a different problem, the operator may have to vary given procedures to fit the
individual job;.
Preparation for Use.
a.
On Emergency Switchboard (FIGURE 2-87) set all equipment circuit breakers to ON position.
b.
On Emergency Generator Diesel Control Panel (FIGURE 2-88), set RUN/OFF/AUTO switch (1) to
OFF position.
c.
On Main Switchboard (FIGURE 2-89), set all circuit breakers to OFF position except EMERGENCY
SWITCHBOARD TIE BREAKER circuit breaker (4) set to ON position.
NOTE
Circuit breakers for equipment vital to the LCU operation are located on the
emergency switchboard bus. They are electrically powered from the Main
Switchboard Bus Tie. These systems operate on normal ship power and/or
emergency power.
d.
On Auxiliary Machinery Motor Control Center (FIGURE 2-90), set all circuit breakers to OFF
position.
e.
On Engine Room Ventilation Motor Control Center (FIGURE 2-91) set all circuit breakers to OFF
position.
2-5. Before You Operate This Equipment. The following operating procedures are sequential to allow the
vessel master to bring the LCU from a dead in the water mode to a full power underway condition. Instructions
are provided to systematically bring each subsystem/equipment into operation. Each subsystem/equipment will
have the operator/crew before operating (b) preventive maintenance checks and services (PMCS) performed
as it is prepared for operation. See Table 2-2 in Section II of this chapter. Shutdown procedures take the vessel
from full power to dead in the water.
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