TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
f. Cabin
temperature
control
rheostat - Rotate fully counter-
clockwise. Observe an decrease
in cabin temperature.
NOTE
Air conditioning will come on if cabin tem-
perature is above 60 to 65°F.
NOTE
The temperature control rheostat should be
in its mid position at approximately 75°F
cabin temperature.
*12. Air conditioning cold operation -
Check as follows:
a. Verify that the COLD OPN an-
nunciator light is illuminated
only when the FAT is below
45°F.
b. Cabin temperature mode selec-
tor - COLD OPN. Check that
air conditioner turns on in 8 to
12 seconds.
c. Verify that air conditioner op-
eration is the same as the
AUTO mode except that the
air conditioner operates contin-
uously above 61% N1.
13. Pressurization system - Check as
required (Section IV).
*14. Carbon monoxide
- Check the
cockpit and cabin for the presence
of carbon monoxide. Maximum
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