Carrier 38APS025-050 Air Conditioner User Manual


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Fig. 54 — Charging Chart — 38APD090 — Circuit B, 50/60 Hz
Fig. 53 — Charging Chart — 38APD090 — Circuit A, 50/60 Hz
90
100
110
120
130
Circuit A
50
40
E
AT LIQUID VALVE (DEG C)
E
AT LIQUID VALVE (DEG F)
ADD CHARGE IF ABOVE CURVE
50 SST
30 SST
40 SST
60
70
80
90
100
110
120
130
200 250 300 350 400 450 500 550 600
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Circuit A
1500
2000 2500 3000 3500
4000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
50
40
30
20
LIQUID TEMPERATURE AT LIQUID VALVE (DEG C)
LIQUID TEMPERATURE AT LIQUID VALVE (DEG F)
ADD CHARGE IF ABOVE CURVE
REDUCE CHARGE IF BELOW CURVE
50 SST
30 SST
40 SST
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.
LEGEND
SST — Saturated Suction Temperature
a38-7187
90
100
110
120
130
Circuit B
50
40
E
AT LIQUID VALVE (DEG C)
E
AT LIQUID VALVE (DEG F)
ADD CHARGE IF ABOVE CURVE
50 SST
30 SST
40 SST
60
70
80
90
100
110
120
130
200 250 300 350 400 450 500 550 600
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Circuit B
1500
2000 2500 3000 3500
4000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
50
40
30
20
LIQUID TEMPERATURE AT LIQUID VALVE (DEG C)
LIQUID TEMPERATURE AT LIQUID VALVE (DEG F)
ADD CHARGE IF ABOVE CURVE
REDUCE CHARGE IF BELOW CURVE
50 SST
30 SST
40 SST
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.
LEGEND
SST — Saturated Suction Temperature
a38-7188
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