BHT-412-MM-2
5-00-00
Page 92 Rev. 23 15 DEC 2015
Export Classification C, ECCN EAR99
a. Inspect EMERG BUS INTC circuit breaker for wear.
Operate circuit breaker manually and check by feel. Worn or
loose circuit breaker is not acceptable. Close circuit breaker.
b. Place all switches in OFF or NORM position and close
all circuit breakers.
c. Connect battery.
d. Place BATTERY BUS 1 switch and BATTERY BUS 2
switch in the ON position. Position INV 1 and INV 2 switches in
the ON position. Caution panel INVERTER 1 and INVERTER 2
segments should not be illuminated.
e. Check emergency bus power by pressing the FIRE
EXT PRESS TO TEST button momentarily. Observe both FIRE
PULL handle warning lights illuminate.
f. Position emergency bus switch to EMERG LOAD
position. Check emergency bus power by pressing the FIRE
EXT PRESS TO TEST button momentarily. Observe both FIRE
PULL handles illuminate. Verify INVERTER 1 and INVERTER 2
segments are illuminated on the caution panel.
S/N 33108 through 33213 and 36001 through 36999
— Check INVERTER 1 light segment on the caution
panel is not illuminated and INVERTER 2 segment
is illuminated.
g. Position BATTERY BUS 1 and BATTERY BUS 2
switches off. Check emergency bus power by pressing FIRE
EXT PRESS TO TEST button momentarily. Observe FIRE
PULL handles illuminate.
h. Position INVERTER 1 and INVERTER 2 switches OFF.
Position emergency bus switch to NORMAL. Disconnect
battery.
i. Install screw, spacer, and washer in the emergency
load switch guard if removed.
Chapter 96 5. Perform functional check of power diodes.
5-10. 300 HOUR/12 MONTH INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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