TM 9-2350-267-10
OPERATING THE APU - Continued
8. Allow APU to warm up for three minutes, then turn APU Generator switch
(1) ON.
CAUTION
When operating the APU at high altitudes and/or high
temperatures, continuous heavy-load demands by the
electrical and hydraulic systems may cause the APU
engine to overheat. In these extreme conditions, the
APU GENerator switch should be turned OFF and hy-
draulic components shut down periodically. Continue
to run APU without load for several minutes before
again operating generator and hydraulic components.
CAUTION
If HIGH AIR Temperature lamp (6) lights during opera-
tion, turn OFF the FUEL SHUT OFF switch. Allow APU
to cool before restarting. Notify Organizational Main-
tenance if lamp lights often.
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