Charging Chart — 38Apd050 - Carrier 38APS025 Manual

50 50
40 40
30
20
a38-7178
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.
50 50
40 40
30
20
a38-7179
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
120 120
ADD CHARGE IF ABOVE CURVE ADD CHARGE IF ABOVE CURVE
110 110
100 100
90 90
80
70
60
200 250 300
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
1500
2000
Fig. 59 — Charging Chart — 38APD050 — Circuit A, 50/60 Hz
130 130
120 120
ADD CHARGE IF ABOVE CURVE ADD CHARGE IF ABOVE CURVE
110 110
100 100
90 90
80
70
60
200 250 300
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
1500
2000
Fig. 60 — Charging Chart — 38APD050 — Circuit B, 50/60 Hz
Circuit A
REDUCE CHARGE IF BELOW CURVE
350 400
2500 3000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
Circuit B
REDUCE CHARGE IF BELOW CURVE
350 400 450
2500 3000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
47
50 SST 50 SST
40 SST 40 SST
30 SST 30 SST
450 500 550
4000
3500
50 SST 50 SST
40 SST 40 SST
30 SST 30 SST
500 550
4000
3500
600
600