TM 9-2320-280-34
NOTE
Table 2-1.1 applies to
air-conditioning systems serviced with
FR-12 refrigerant only.
Table 2-1.1. Normal Operating Temperatures and Pressures (FR-12).
Relative
Surrounding
Engine
Desirable Center
Low-Side
High-Side
Humidity
Air Temperature
Speed
Outlet Discharge Air
Pressure
Pressure
(percent)
F (C)
(rpm)
Temperature F (C)
5 psi
25 psi
70
(21)
42
(6)
9
157
20
80
(26)
1500
44
(7)
15
188
90
(32)
46
(8)
20
206
100
(37)
47
(8)
23
235
70
(21)
44
(7)
11
161
30
80
(26)
1500
45
(7)
16
188
90
(32)
47
(8)
22
214
100
(37)
48
(9)
26
247
70
(21)
44
(7)
12
165
40
80
(26)
1500
46
(8)
18
200
90
(32)
48
(9)
24
223
100
(37)
50
(10)
28
258
70 (21)
46
(8)
12
169
50
80 (26)
1500
48
(9)
20
206
90 (32)
52
(11)
24
231
100 (37)
54
(12)
28
269
70
(21)
46
(8)
14
173
60
80
(26)
1500
52
(11)
22
213
90
(32)
54
(12)
26
239
100
(37)
56
(13)
30
280
70
(21)
48
(9)
16
178
70
80
(26)
1500
52
(11)
22
218
90
(32)
56
(13)
28
247
100
(37)
60
(16)
30
292
70
(21)
52 (11)
20
182
80
80
(26)
1500
58 (14)
24
222
90
(32)
62 (17)
30
257
100
(37)
N/A
N/A
N/A
70
(21)
62 (17)
22
186
90
80
(26)
1500
66 (19)
32
230
90
(32)
72 (22)
42
264
100
(37)
N/A
N/A
N/A
Change 1