TM 55-1930-209-14&P-9-1
2-10.5
Miscellaneous controls and Indicators. The lower right switchboard panel (Figure 2-15) monitors the three
battery chargers that maintain generator battery banks and shows status of the shore power circuit breaker. Panel indicators
and controls include the following:
a.
DC AMMETERS and DC VOLTMETERS. Placed in pairs across the top of this panel with ammeters on top
and voltmeters below. Indicate operation of battery chargers for SSG 1, SSG 2, and SAG.
b.
BATTERY CHARGER switches. Three switches are immediately below the corresponding gauges. Each has a
two-position toggle switch with FLOAT to left and EQUALIZE to right. FLOAT is normal setting. Each switch
controls battery charging for one of the three generator set diesel engines.
c.
SHORE POWER status lights. Similar to status lights for generator status. Shows shore power receptacle
status with three lights. AVAILABLE indicates power is plugged into shore power receptacle on aft weather
deck port side. Next two lights show if shore power circuit breaker is OPEN or CLOSED.
d.
SHORE POWER circuit breaker. Circuit breaker P4 connects shore power to switchboard bus. When this
circuit breaker is dosed (ON), generator circuit breakers will NOT dose.
e.
PHASE ROTATION status lights. These two status lights indicate the shore power phase rotation. The shore
power breaker will not dose if the phase is not in proper sequence.
2-11.
Prestart procedures from switchboard
NOTE
The following procedures are for operating generator sets from the switchboard.
Chapters 4 and 5 provide procedures for operation of generator sets at engine location In
voids 4.
a.
Perform pre-start procedures in paragraph 4-11 for SSG 1 or SSG 2, or paragraph 5-11 for SAG.
b.
Check that circuit breaker for starting generator (Figure 2-14) (P1, P2, or P3) is open (OFF).
c.
Check that shore power circuit breaker P4 (Figure 2-15) is open (OFF).
d.
Check that INCOMING GENERATOR selector switch (Figure 2-14) is OFF.
e.
Check that generator VOLTAGE REGULATOR switch (Figure 2-11) is on IDLE.
f.
Check that ENGINE CONTROL SWITCH is OFF (Figure 2-11).
g.
Check that battery charger for starting generator is set on FLOAT (Figure 2-15).
h.
Make sure Equipment Monitoring System (EMS) is operating by pushing up on Monitor controller left of
monitoring processor. It video screen does not come on, turn it on with switch beneath the screen. For more
details on EMS, see TM 55-1930-209-14&P-11.
i.
Check that 24 Vdc power panel in workshop is active (Chapter 3) and that circuit breaker 8P14 is dosed (ON).
This procedure provides voltage to hold open solenoids in generator fuel lines. Emergency shutdown switches
activate these shutoff solenoids by removing this 24 Vdc power. If 24 Vdc panel is not active, and circuit
breaker 8P1 4 is not dosed, these holding solenoids are dosed and fuel for these generators is shut off. The
generator will start and run for about 2 minutes until lack of fuel shuts it off.
CAUTION
Turn off all emergency panel power users and all emergency lights when all power
sources are turned off on barge. If not turned off, DC battery bank will be drained of
power. Without DC power to hold fuel cutoff solenoids open, generators will not operate
to recharge the 24 Vdc battery bank
2-17
