57
SAFIR 5L
OPERATION AND ATTENDANCE MANUAL
PG 01-31
v
APU is ronning for 13÷20 sec. only
Perform the checks error messages the EC via PC, RS232
interface on a COM port and software "SAFIR Monitor"
Error messages the EC –
Not igniting of Chamber
Not reached the required temperature of the exhaust
gases after the start of APU
Board network voltage in order
Check the feeding
TEST
Check feeding of ES
Replace ES or APU
Fuel-air mixture in combustion
chamber has been ignited
Exiter Device in operation
Replace
Control Box
>150°C
NO YES
Check EGTP in 13
th
NO
>20%
YES
YES
NO
Replace
EU
Check APU
draining
Replace FP and /or
BFS and/or RFF
Fuel has
been
injected
Check CL, EGTP
Replace CL
or EGTP if
defective
TEST
APU revolutions
reached in 5
th
sec
<15%
<150°C
TEST
TEST
Check feeding of FP
and EV1
Replace FP
and/or FF
Check feeding of ES
Replace ES and/or APU
Check APU rotor
speed in 5
th
seccond is
≥
20%
Check electric
harness
Replace EC
Check APU draining
Replace FP and/or EU,
BFS and/or RFF
NO
NO
NO
YES
YES
YES
YES