Carrier 38APS025 Manual page 49

50 50
40 40
30 30
20
a38-7182
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 (0.11 kg) 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
a38-7190
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 (0.11 kg) increments until complete. Ensure that all fans are on and all compressors are running when using charging charts.
Fig. 64 — Charging Chart — 38APS065 — Single Circuit, 50/60 Hz
130.0 130.0
120.0 120.0
ADD CHARGE IF ABOVE CURVE ADD CHARGE IF ABOVE CURVE
110.0 110.0
100.0 100.0
90.0 90.0
80.0
70.0
60.0
200.0 250.0 300.0
1500
2000
Fig. 63 — Charging Chart — 38APD060 — Circuit B, 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)
Circuit B
REDUCE CHARGE IF BELOW CURVE REDUCE CHARGE IF BELOW CURVE
350.0 400.0
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
2500
LIQUID PRESSURE AT LIQUID VALVE (kPag)
Circuit B
REDUCE CHARGE IF BELOW CURVE
350 400 450
2500 3000
49
30 SST 30 SST
450.0 500.0 550.0
3000 3500
50 SST 50 SST
40 SST 40 SST
30 SST 30 SST
500 550
3500
50 SST 50 SST
40 SST 40 SST
600.0
4000
600
4000