929 / 1003
Chapter 9
- Refrigerants
9-6
Go to Chapter Start-
Table of Contents-
Index65
66
67
68
69
70
71
72
73
74
74
75
76
78
79
80
82
83
84
86
75
76
77
78
79
80
81
82
83
84
87
88
90
92
94
96
98
99
100
101
85
86
87
88
89
90
91
92
93
94
102
103
105
107
108
110
111
113
115
116
95
96
97
98
99
100
101
102
103
104
118
120
122
124
125
127
129
130
132
134
105
106
107
108
109
110
111
112
113
114
136
138
140
142
144
146
148
150
152
154
18.3
18.9
19.4
20.0
20.6
21.1
21.7
22.2
22.8
23.3
510
517
524
538
545
552
565
572
579
593
23.9
24.4
25.0
25.6
26.1
26.7
27.2
27.8
28.3
28.9
600
607
620
634
648
662
676
683
690
696
29.4
30.0
30.6
31.1
31.7
32.2
32.8
33.3
33.9
34.4
703
710
724
738
745
758
765
779
793
800
35.0
35.6
36.1
36.7
37.2
37.8
38.3
38.9
39.4
40.0
814
827
841
855
862
876
889
896
910
924
40.6
41.1
41.7
42.2
42.8
43.3
43.9
44.4
45.0
45.6
938
952
965
979
993
1007
1020
1034
1048
1062
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°C kPa
°C kPa
°C kPa
°C kPa
°C kPa
R-12 Allowable Container Pressure
65
66
67
68
69
70
71
72
73
74
75
69
70
71
73
74
76
77
79
80
82
83
76
77
78
79
80
81
82
83
84
85
86
85
86
88
90
91
93
95
96
98
100
102
87
88
89
90
91
92
93
94
95
96
97
103
105
107
109
111
113
115
117
118
120
122
98
99
100
101
102
103
104
105
106
107
108
125
127
129
131
133
135
137
139
142
144
146
109
110
111
112
113
114
115
116
117
118
119
120
149
151
153
156
158
160
163
165
168
171
173
176
18
19
20
21
22
23
24
476
483
503
524
545
552
572
25
26
27
28
29
30
31
593
621
642
655
676
703
724
32
33
34
35
36
37
38
752
765
793
814
841
876
889
39
40
41
42
43
44
45
917
945
979
1007
1027
1055
1089
46
47
48
49
1124
1158
1179
1214
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°C kPa
°C kPa
°C kPa
°C kPa
°C kPa
R-134a Allowable Container Pressure
Flushing the AC System
Flushing has long been recommended as a means of removing contaminants or
other debris from certain system components. The normal flushing materials,
such as R-11, are now prohibited.
Using compressed air is not a good method of flushing. Air should never be
used in an R-134a system. Closed loop flushing kits are now available, al-
though they may not remove all foreign material.
Figure 9-2
The pressures in these
English and metric charts
refer to recycled R-12 and R-
134a refrigerant, respec-
tively.