TM 9-2320-387-24-2
Table 14-2. Normal Operating Pressures
and Temperatures.
AMBIEM
HIGH SIDE
LOW SIDE
TW
PRESSURE
PRESSURE
85
so
95
100
225-175
PSI
CYCLING
(TIMES
PER MINUTE
190-185
CONDENSER
FANS ENGAGE
AT 225 PSIG THEN
DROP TO ABOVE
CONSTANT
PRESSURES
223-221
PSI
LJNITRUNS
coNTINuousLY
NO CYCLING
233-230
PSI
UhTl’RUNS
COhTlNUOUSLY
NO CYCLWG
32-26
PSI
CYCLING
iE%
35-32 PSI
48.00
48.00
3D%Rn
Io%Rl. 5D%RH
51.40
54.20
59.00
iO%RH
63.00
7D%RH
66.60
3o%RH
69.80
Kt%RH
73.40
76.60
50.00
50.80
50.60
54.40
58.40
61.20
64.00
68.00
71.60
74.80
77.60
34-33 PSI
53.00
53.00
53.84
55.52
60.14
64.76
69.38
74.42
77.78
80.72
83.24
37-36 PSI
58.00
58.00
58.00
58.84
62.62
67.86
79.00
81.94
84.86
87.82
89.92
T
D%RH
ACCECPTABLE FROM AND REAR EVAPORATOR LOUVER TEMPERATURES
AIR CONDITIONING TROUBLESHOOTING
SYMPTOM INDEX
I 1
1
oo%RH
MAlFUNCTlON
NO.
MALFUNCTION
TROUBLESHOOTING
PROCEDURE
PAGE
AIR CONDITIONER
;:
3.
:*
6:
Insufficient cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intermittentcooling..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 1: 1: : : :
14-19
14-21
AIR CONDTIONER COMPRESSOR
Insufficient cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unusual noise with clutch engaged . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14-21
Unusual noise with clutch disengaged . . . . . . . . . . . . . . . . . . . . . . . . . .
14-22
14-22
Incorrect oil level or leak. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14-22
14-18
