61
SAFIR 5L
OPERATION AND ATTENDANCE MANUAL
PG 01-31
APU is exessively oiled.
Excessived oil consumption detected.
Smoke and blasts visible in APU exhaust
Check if the voltage at EV3
and EV4 is correct
YES
NO
Replace EC
Check electric
connection and
operation of EC
EV3, EV4 valves when
energized are – open
without
energized–shut and tight
EV2 valve in OF
not energized
-
untight
Check APU
Replace APU
Clean EV2
Clean EV3 or EV4
TEST
YES NO
Replace EV3 or EV4
Replace EV2
Check tightness of oil
instalation
