TM 11520238T1
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33
APU OPERATING INSTRUCTIONS (cont)
33
CPG Station
PANEL
SWITCH/CONTROL
POSITION
(set to)
CSC
Transmitter
Select
ICS
MIC
1 (for
maintenance
headset without
power adapter)
2 (for helmet or
maintenance
headset with
power adapter)
ICS SELECT
NORM
VOL
As desired
10. Perform APU Fire Detection System check as follows and
achieve acceptable confidence level with system.
CAUTION
Ensure fire bottle select switch PRI/RES is
centered or fire bottle may discharge.
a. On APU/FIRE TEST panel (fig. 221), set FIRE TEST
DET switch to 1.
b. On pilot/CPG master caution/warning panel (fig. 29
and 236), verify FIRE APU indicator is lit.
c. On APU/FIRE TEST panel, verify APU FIRE PULL
handle is lit.
d. On APU/FIRE TEST panel, set FIRE TEST DET
switch to 2.
e. On pilot/CPG master caution/warning panel, verify
FIRE APU indicator is lit.
f. On APU/FIRE TEST panel, verify APU FIRE PULL
handle is lit.
g. On APU/FIRE TEST panel, set FIRE TEST DET
switch to OFF.