Cooling Charging Charts (continued)
Liquid Pressure (psig)
500
475
Remove refrigerant when above curve 
450
425
400 |
|
375 |
|
350 |
|
325 |
|
300 |
|
275 | Add refrigerant when below curve |
250 |
|
70 75 80 85 90 95 100 105 110 115 120 125
Liquid Temperature (° F)
Figure 6. Charging Chart for 4 Ton Units
Liquid Pressure (psig)
500
475
Remove refrigerant when above curve 
450
425
400 |
|
375 |
|
350 |
|
325 |
|
300 |
|
275 | Add refrigerant when below curve |
250
70 75 80 85 90 95 100 105 110 115 120 125
Liquid Temperature (° F)
Figure 7. Charging Chart for 5 Ton Units
15
