Compressor; Lubrication - Carrier 50FCQ 04-07 Series Service And Maintenance Instructions

Cooling Charging Chart Std 4 Ton Heat Pump (Three Phase)
R-410A Refrigerant
(Unit must be operated in cooling mode)
1241 180
1172 170
1103 160
1034 150
965 140
896 130
827 120
758 110
689 100
620 90
551 80
30 35 40 45 50 55
–1.1 1.7 4.5 7.2 10.0 12.8
SUCTION LINE TEMPERATURE [°F/°C]
Fig. 25 — Cooling Charging Chart — 4 Ton,
50FCQA05
Cooling Charging Chart Std 5 Ton Heat Pump
R-410A Refrigerant
(Unit must be operated in cooling mode)
1241 180
1172 170
1103 160
1034 150
965 140
896 130
827 120
758 110
689 100
620 90
551 80
30 35 40 45 50 55
-1.1 1.7 4.5 7.2 10.0 12.8
SUCTION LINE TEMPERATURE [°F/°C]
Fig. 26 — Cooling Charging Chart — 5 Ton,
50FCQA06
OUTDOOR
TEMP
°F / °C
115 / 46
105 / 41
95 / 35
85 / 29
75 / 24
65 / 18
55/ 13
45/ 7
60 65 70 75 80 85 90
15.6 18.3 21.1 23.9 26.7 29.5 32.2
48TC003782 A
OUTDOOR
TEMP
°F / °C
115 / 46
105 / 41
95 / 35
85 / 29
75 / 24
65 / 18
55/ 13
45/ 7
60 65 70 75 80 85 90
15.6 18.3 21.1 23.9 26.7 29.5 32.2
48TC003783 A
Cooling Charging Chart Std 6 Ton Heat Pump
(Unit must run in cooling mode, on high stage
compressors & outdoor fan on high speed)
59.9 140
Add Charge if Above the Curve
48.8 120
37.7 100
80
26.6
15.5 60
4.4 40
-6.7 20
150 200 250
1034 1379 1723
Compressor Discharge Pressure, [psig/Kpa]
Fig. 27 — Cooling Charging Chart — 6 Ton,

COMPRESSOR

Lubrication

The compressor is charged with the correct amount of oil at the
factory.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage to
components.
The compressor is in a R-410A refrigerant system and uses a
polyolester (POE) oil. This oil is extremely hygroscopic,
meaning it absorbs water readily. POE oils can absorb
15 times as much water as other oils designed for HCFC and
CFC refrigerants. Avoid exposure of the oil to the atmosphere.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Never use air or gases containing oxygen for leak testing or for
operating refrigerant compressors. Pressurized mixtures of air
or gases containing oxygen can lead to an explosion.
17
R-410A Refrigerant
Remove Charge if Below the Curve
300 350 400 450 500 550
2068 2413 2758 3102 3447 3792
48TC003784
50FCQM07
CAUTION
WARNING
600
4136
A