The only control feature on the top panel is
Located at the lower center of the upper
located on the lower right side. It is labeled FIRE
panel is a push-button switch labeled ALARM
ZONE DOOR RELEASE. When this push button
ACKNOWLEDGE. An alarm condition is dis-
is depressed, the console sends out a signal to close
played by a flashing indicator accompanied
the fire boundary smoketight doors. This function
by an audible alarm. Depressing the ALARM
ACKNOWLEDGE push button silences the audible
prevents the spread of smoke throughout the ship
alarm and causes the flashing indicator to
during fires.
illuminate steadily. The indicator extinguishes
when the alarm condition clears.
DCC LOWER PANEL
The next two push-button switches provide for
The lower panel of the DCC, shown in figure
testing of the annunciator. The switches are
9-27, monitors and controls the ship's firemain
labeled HORN TEST and BELL TEST. Depressing
system. This panel has a complete mimic of the
the HORN TEST push button sounds the horn,
major piping of the firemain. Some of the
while depressing the BELL TEST push button
capabilities available from this panel include the
sounds the bell. Associated with these push
following:
buttons is a volume control potentiometer that
the operator can use to adjust the volume of the
Fire pump on/off control (five pumps)
audible alarm.
Control of major isolation valves (20
valves)
AFFF proportioner activation indication
Minor isolation valve indication
Figure 9-27.--DCC lower panel.
9-47
