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 NAVAIR 17-15-50.4
TM 38-301-4
T.O. 33-1-37-4
CGTO 33-1-37-4
TYPE EQUIPMENT:
Refrigeration Systems
SYSTEM/USE:
Direct Expansion
EQUIPMENT MODEL:
R12
Fe
Ag
Al
Cr
Cu
Mg
Pb
Sn
Ni
Si
Normal Range
0-11
0-2
0-2
0-17
0-22
0-2
0-7
0-2
0-11
Marginal Range
12-29
3-5
3-5
18-34
23-52
3-5
8-15
3-5
12-29
High Range
30-40
6-10
6-10
35-48
53-64
6-10
16-25
6-10
30-40
Abnormal
41+
11+
11+
49+
65+
11+
26+
11+
41+
Abnormal Trend
(PPM Increase
in 10 hrs)
Average Concentration Other Elements:
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