TM 9-6115-664-13&P
2-8. OPERATING PROCEDURES.
WARNING
Do not operate the APU in an enclosed area unless exhaust gases are properly
vented to the outside. Exhaust fumes can be harmful if allowed to accumulate.
Exhaust discharge contains noxious and deadly gases.
WARNING
Shut down the APU at first sign of failure. Continued operation can result in injury
to personnel and will cause damage to equipment. If the APU is shut down by the
operation of a safety device, do not operate again until the cause of the shut down
has been determined and eliminated.
a. Operating the APU Using Local Control Panel.
NOTE
If ambient temperature is below 32° F (0° C), refer to paragraph 2-10, Operation in
Unusual Weather, for operating instructions.
(1)
Place the REMOTE/ LOCAL switch (4, Figure 2-2) in the LOCAL position.
(2)
Place the START / PRIME - RUN / OFF switch (1) in the PRIME - RUN position.
CAUTION
Do not hold START / PRIME - RUN / OFF switch in START position for more than 10
seconds. Damage to starter motor can occur. Wait 30 seconds before placing in
START position again. If engine does not run after third attempt, contact
maintenance personnel.
(3) Wait 5 seconds, then move the START / PRIME - RUN / OFF switch (1) to the START position. Switch is
spring loaded and must be held in place. Release switch when engine starts.
CAUTION
To prevent damage, allow engine to warm up for a few minutes before activating
the APU ON switch and applying the load. Additional warm up time may be
required in extremely cold conditions. Continually operating a cold engine can
shorten its service life.
2-17
