Traulsen G Series Service Manual page 11

When charging any G-Series Freezer with R-448A refrigerant care should be taken to weigh the proper amount
of liquid refrigerant into the system according to the data plate. It is important to charge with refrigerant in a
liquid state to avoid fractionating.
1.5.3.1 Pressure/ Temperature Chart for R-448 A Refrigerant
Figure 5 R-448A Blend
R-32
R-125
R-134A
R-1234yf
R-1324ze
Table 3 R-448 Refrigerant Composition
Pressure
5 PSIG
10 PSIG
15 PSIG
20 PSIG
25 PSIG
30 PSIG
35 PSIG
40 PSIG
50 PSIG
60 PSIG
70 PSIG
80 PSIG
90 PSIG
100 PSIG
110 PSIG
130 PSIG
140 PSIG
150 PSIG
160 PSIG
170 PSIG
180 PSIG
190 PSIG
200 PSIG
210 PSIG
220 PSIG
230 PSIG
240 PSIG
Dew Bubble
-28.8°F -39.8°F
-19.7°F -30.6°F
-12.0°F -22.8°F
-5.23°F -15.9°F
0.8°F -9.8°F
6.3°F -4.3°F
11.3°F 0.8°F
16.0°F 5.5°F
24.4°F 14.5°F
31.9°F 21.6°F
38.7°F 28.5°F
44.8°F 34.8°F
50.5°F 40.6°F
55.8°F 45.9°F
60.8°F 51.0°F
69.8°F 60.2°F
74.0°F 64.5°F
78.0°F 68.6°F
81.3°F 72.5°F
85.4°F 76.2°F
88.9°F 79.8°F
92.3°F 83.3°F
95.5°F 86.6°F
98.7°F 89.8°F
101.7°F 93.0°F
104.6°F 96.0°F
107.5°F 99.0°F
26%
26%
21%
20%
7%
10