AFE325
Refrigeration System
This ice machine uses
Service Recommendations:
This ice machine has a sealed refrigeration system. It must not be tapped into unless absolutely necessary. If access is required, tap into the "process" tubes
After recovery, repair, evacuation and
1.Pinch off the process tube below the valve.
2.Remove the valve.
3.Braze the end of the tube shut.
A HFC type liquid line drier is required. "Standard" driers may not take out enough moisture and may affect the oil additives.
The time that the refrigeration system is open to the air must not exceed 15 minutes. The oil will rapidly absorb moisture from the air, and the contact time must be kept to a minimum.
A special or very sensitive electronic leak detector will be needed to locate refrigerant leaks. Many are on the market that will sense
Recovery and vacuum equipment should use polyolester oil to minimize
A HFC type drier must be used.
As with any other refrigerant, do not place pressurized air or oxygen into the refrigeration system.
Evacuation to 200 microns is recommended.
Temperature Pressure Chart, Selected Points
Temperature in 0F. | PSIG of |
2.0 | |
|
|
3.7 | |
|
|
4.6 | |
5.5 | |
0 | 6.5 |
|
|
1 | 7.0 |
|
|
2 | 7.5 |
|
|
3 | 8.0 |
|
|
4 | 8.6 |
5 | 9.1 |
10 | 12.0 |
|
|
12 | 13.2 |
|
|
14 | 14.4 |
|
|
16 | 15.7 |
18 | 17.1 |
20 | 18.4 |
25 | 22.1 |
|
|
30 | 26.1 |
|
|
31 | 26.9 |
|
|
32 | 27.8 |
|
|
33 | 28.6 |
34 | 29.5 |
35 | 30.4 |
|
|
40 | 35.0 |
|
|
45 | 40.0 |
|
|
50 | 45.4 |
75 | 78.7 |
90 | 104.3 |
|
|
110 | 146.4 |
|
|
120 | 171.1 |
|
|
130 | 198.7 |
|
|
150 | 262.8 |
|
|
August 1994
Page 20