TM 55-1510-221-MTFPROCEDURE TROUBLESHOOTINGREFERENCEDURING CLIMB (CONT)NOTEAir conditioning will come on if cabin tem-perature is above 60 to 65FNOTEThe temperature control rheostat should bein Its mid position at approximately 75Fcabin temperature*12.Air conditioning cold operation -Check as follows-a.Verify that the COLD OPN an-nunciator light is illuminatedonly when the FAT is below45°F.b.Cabin temperature mode selec-tor - COLD OPN Check thatair conditioner turns on in 8 to12 seconds.c.Verify that air conditioner op-eration is the same as theAUTO mode except that theair conditioner operates contin-uously above 63% N1.13.Pressurization system - Check asrequired (Section IV)*14. Carbon monoxide - Check thecockpit and cabin for the presenceof carbon monoxide. Maximumcarbon monoxide allowable is 0.005%.2-44
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