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demand digital display. In the event the temperature
The power for the console alarm circuits is taken from
the console.
exceeds a predetermined value, an alarm indicator is
energized.
AUXILIARY MACHINERY CIRCULATING
The high-temperature switches in the cooling air
WATER TEMPERATURE INDICATING
exhaust, which operates when temperature reaches a
AND ALARM SYSTEM (CKT 2EW)
predetermined limit, actuates visual and audible alarm
indicators on the type IC/SM alarm panel associated
Circuit 2EW provides a means for indicating high
with the generator.
temperatures in the ship's service diesel generators
engine circulating water. This system is classified as
Circuitry of the alarm switchboards and associ-
semivital readiness class 1.
ated connections may be verified using the procedures
previously described. Checkout procedures for the
Sensors of the resistance-temperature-detector
console circuits can be found in the Electric Plant
(RDT) type are installed in the circulating water line
Control Console Technical Manual.
of each diesel generator. High-temperature switches,
fitted with supervisory resistors across the contacts,
Power for each alarm switchboard circuit is taken
are also provided in the circulating water line.
from the associated alarm switchboard. Power for the
console circuits is taken from the console.
Each RTD in the circulating water line provides a
signal to an RTD conditioner in the electric plant
GENERATOR BEARING AND STATOR
o p e r a t i n g console. Temperature is displayed
TEMPERATURE INDICATING AND
continuously on a temperature meter and as a demand
ALARM SYSTEM (CKT EF)
digital display. If circulating water temperature rises
to a predetermined limit, an alarm signal is generated
Circuit EF provides a means for indicating high
that energizes visual and audible alarm indicators at
temperature in bearings and stators of ship's service
the type IC/SM alarm panel associated with the
diesel generators. This circuit is classified as semivital
generator.
readiness class 1.
Checkout procedures for this circuit can be found
in the Electric Plant Control Console Technical
A sensor of the RDT type is installed so that it is
Manual. Switchboards and associated connections can
in contact with the bearing or the stator, A high-
be checked out as described previously.
temperature switch is also installed so that it is in
contact with the bearing.
Power supply for the circulating water indicating
and alarm circuits associated with the electric plant
The RTD at a bearing sends a signal to an RTD
control console is taken from the console. Power for
conditioner in the electric plant control console.
the alarm circuits associated with the alarm
Temperature is displayed on a demand digital readout.
switchboards is taken from the switchboard.
In the event the temperature exceeds a predetermined
value, visual and audible alarms are energized.
GENERATOR AIR TEMPERATURE
An increase in the temperature at the bearing to a
INDICATING AND ALARM SYSTEM
predetermined temperature causes the temperature
(CKT 1ED)
switch to operate, actuating a visual and audible
indication at the type IC/SM alarm panel associated
Circuit 1ED provides a means of indicating high
with the generator. Operation of the circuits of this
temperature of the cooling air exhaust of the ship's
switchboard has been previously described.
service diesel generators. This circuit is classified as
semivital readiness class 1.
The RTDs at the generator stators provide signals
to an RTD conditioner in the electric plant control
A sensor of the RTD type is installed in the cooling
console. Temperature for each phase is continuously
air exhaust of each diesel generator. In addition, a
available through a selector switch for display on a
high-temperature switch is installed adjacent to the
temperature meter.
sensor.
Checkout procedures for the bearing and stator
The RTD in the cooling air exhaust provides a
circuits can be found in the Electric Plant Control
signal to an RTD conditioner in the electric plant
Console Technical Manual. Alarm switchboard
control console. Temperature data is available at the

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