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 (32) Salt water circulator switch (33). This switch
(11). This signal, when lighted, indicates that
power is available from generator No. 1.
controls power to the controller of the salt water
(11) Circuit breaker, generator No. 1 (12). Opens
circulation standby pump.
(33) Lubricating oil purifier switch (34). This
or closes the electrical circuit between generator no. 1
and the electrical control panel. When an overload
switch controls power to the controller of the lubricating
occurs it opens the circuit automatically.
oil purifier.
(12) Ground detector button (13). Depressing this
(34) Capstan switch (35). This switch controls
button isolates the ungrounded wire and illuminates one
power to controller of the capstan.
of signal lights (4), thereby indicating in which leg of the
(35) Air compressor switch (36). This switch
circuit the ground is located.
controls power to controller of the air compressor.
(13) Ammeter, generator No. 1 (14).
This
(36) Shore supply switch (37). This switch
indicates amperage load on generator no. 1.
controls power to the power panel on main deck that can
(14) Rheostat, generator No. 1 (15). The field
be used to supply power to another unit from this tug.
rheostat is used to adjust voltage output of generator no.
(37) Disconnect, generator No. 2 (38). This is
1.
the line switch between generator No. 2 and main
(15) Disconnect, generator No. 1 (16). This is the
control panel.
line switch between generator no. 1 and the main control
(38)
Generator equalizer switch (39).
The
panel.
equalizer switch is used to balance load between the two
(16) Power selector switch (17). This switch is
generators and prevents one generator from taking load
used to transfer load from control panel to shore, or
away from the other.
from shore to the control panel.
(39) Rheostat, generator No. 2 (40). This
(17) Lighting panel switch (18). This switch
rheostat is used to adjust voltage output of generator
controls power to the engine room lighting panel.
No. 2.
(18) Fuel oil transfer pump switch (19). This
(40) Ammeter, generator No. 2 (41). This
switch controls power to controller of fuel oil transfer
ammeter indicates amperage load of generator No. 2.
pump.
(41)
Selector switch (42).
The calibrating
(19) Bilge and ballast pump switch (20). This
voltmeter selector switch is used to select the generator
switch controls power to controller of the bilge and
on which voltage reading is desired. It may be used for
ballast pump.
either the. incoming generator, or it may be used to
(20) Lighting panel switch (21). This switch
check the accuracy of voltmeter (9) by positioning on
the same generator or selector switch (10).
controls power to the pilothouse lighting panel.
(21) Fire pump switch (22). This switch controls
k. Heating System Controls.
power to controller of the fire pump.
(22) Power panel switch (23). This switch
(1) Convector stop valves. A stop valve is
controls power to the engine room power panel.
installed in the steam pipe on inlet side of each
(23) General lighting panel switch (24). This
convector. This will allow control of amount of steam
switch controls power to the crews quarters lighting
going to each convector.
panel.
(24) Navigation lighting panel switch (25). This
NOTE
switch controls power to pilothouse navigation light
The convector in crew's quarters and
panel.
the heating coil installed in the
(25) Fresh water standby pump switch (26). This
supply
ventilators
are
either
switch controls power to controller of fresh water
standby pump.
thermostatically
controlled,
or
26) Air compressor switch (27). This switch
controlled by syphon tubes installed
controls power to controller of the air compressor.
in the ventilation system.
(27) Radar switch (28). This switch controls
power to the radar control panel in pilothouse.
(2) Thermostat. A thermostat to control the
(28) Anchor windlass switch (29). This switch
crew's quarters unit heater is located on the bulkhead,
controls power to controller of the anchor windlass.
for maintaining even temperature in the area.
(29) Lubricating oil standby pump switch (30).
(3) Stack Switch. The stack switch is located on
This switch controls power to the lubricating oil standby
the stack next to the boiler. This switch acts as an
pump.
automatic safety feature on the heating unit. In case of
(30) Steering motor switch (31). This switch
power failure or momentary interruption during
controls power to controller of the steering motor.
operation, the control will shut the burner off and
(31) Ventilation power panel switch (32). This
automatically restart it after the stack gases have
switch controls power to the ventilation system power
cooled, and the starting contacts of the stack switch
panel.
have closed. In case of flame failure
2-10
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