Carrier GEMINI 38APD025-100 Operating And Service Manual page 35

50 50
40 40
30 30
20 20
LEGEND
SST — Saturated Suction Temperature
NOTE: Charging procedures for MCHX units require very accurate measurement techniques. Charge should be added in small increments. Using cooling
charging charts provided, add or remove refrigerant until conditions of the chart are met. As conditions get close to the point on the chart, add or remove charge in
1/4 lb increments until complete. Ensure that all fans are on and all compressors are running when using charging charts.
130 130
50 50 120 120
110 110
40 40
100 100
90 90
30
80
20 70
60
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LEGEND
SST — Saturated Suction Temperature
NOTE: Charging procedures for MCHX units require very accurate measurement techniques. Charge should be added in small increments. Using cooling
charging charts provided, add or remove refrigerant until conditions of the chart are met. As conditions get close to the point on the chart, add or remove charge in
1/4 lb increments until complete. Ensure that all fans are on and all compressors are running when using charging charts.
130 130
120 120
ADD CHARGE IF ABOVE CURVE ADD CHARGE IF ABOVE CURVE
110 110
100 100
90 90
80 80
70 70
60
200 250 300
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
1500
2000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
Fig. 35 — Charging Chart — 38APD025, 50/60 Hz
ADD CHARGE IF ABOVE CURVE ADD CHARGE IF ABOVE CURVE
200 250 300
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
1500
2000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
Fig. 36 — Charging Chart — 38APS025, 50/60 Hz
Circuit A or B Circuit A or B
REDUCE CHARGE IF BELOW CURVE REDUCE CHARGE IF BELOW CURVE
350 400 450
2500 3000
Single Circuit Single Circuit
REDUCE CHARGE IF BELOW CURVE
350 400 450
2500 3000
35
50 SST 50 SST
40 SST 40 SST
30 SST 30 SST
500 550 600
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4000
3500
50 SST 50 SST
40 SST 40 SST
30 SST 30 SST
500 550 600
4000
3500