Normal R-404A System Operating Pressures (Scroll Compressor) - Thermo King CSR Series Manual

Refrigeration System (Continued)
Liquid Injection Valve (Compressor):
Voltage
Current
Cold Resistance
Warm Gas Bypass Solenoid Valve:
Voltage
Current
Cold Resistance
Stepper Valve Regulating Motor:
Voltage
Current Draw
Resistance
Water Pressure Switch (Option):
Close
Open
*When the compressor is removed from the unit, oil level should be noted or the oil removed from the compressor should be
measured so that the same amount of oil can be maintained in the replacement compressor.
**Do not use or add standard synthetic or mineral oils to the refrigeration system. If Ester based oil becomes contaminated
with moisture or with standard oils, dispose of properly — Do Not Use!

Normal R-404A System Operating Pressures (Scroll Compressor)

Container Operating
Temp.
21 C (70 F) Cool
2 C (35 F) Cool
-18 C (0 F) Cool
-29 C (-20 F) Cool
*Suction and discharge pressures vary too greatly during Modulation Cool to use for evaluating or diagnosing refrigeration
system performance. During the Modulation Cool mode, the suction pressure will vary between 100 and 450 kPa, 1.0 and
4.5 bar, 15 and 65 psig depending upon the percent (%) cooling capacity.
**Discharge pressure is determined by condenser fan cycling.
Ambient
Mode Temp.
27 to 38 C, 80
to 100 F
16 to 27 C, 60
to 80 F
27 to 38 C, 80
to 100 F
16 to 27 C, 60
to 80 F
27 to 38 C, 80
to 100 F
16 to 27 C, 60
to 80 F
27 to 38 C, 80
to 100 F
16 to 27 C, 60
to 80 F
24 Vac
0.85 amps
5.6 ohms
24 Vac
0.85 amps
5.6 ohms
12 Vdc
0.13 to 0.21 amperes per winding
0.26 to 0.44 amperes with 2 windings energized
75 ± 7.5 ohms across each winding at 24 C (75 F) ambient
117 ± 21 kPa, 1.17 ± 0.20 bar, 17 ± 3 psig
35 ± 21 kPa, 0.35 ± 0.20 bar, 5 ± 3 psig
Suction Pressure
410 to 670 kPa, 4.10 to 6.70
bar, 59 to 97 psig
400 to 600 kPa, 4.00 to 6.00
bar, 58 to 87 psig
385 to 425 kPa, 3.85 to 4.25
bar, 56 to 62 psig
345 to 385 kPa, 3.45 to 3.85
bar, 50 to 56 psig
214 to 228 kPa, 2.14 to 2.28
bar, 31 to 33 psig
200 to 215 kPa, 2.00 to 2.15
bar, 29 to 31 psig
145 to 160 kPa, 1.45 to 1.60
bar, 21 to 23 psig
130 to 145 kPa, 1.30 to 1.45
bar, 19 to 21 psig
Specifications
Discharge Pressure
2140 to 2650 kPa, 21.40 to
26.50 bar, 310 to 385 psig
1725 to 2140 kPa, 17.25 to
21.40 bar, 250 to 310 psig
1860 to 2380 kPa, 18.60 to
23.80 bar, 270 to 345 psig
1450 to 1860 kPa, 14.50 to
18.60 bar, 210 to 270 psig**
1515 to 2035 kPa, 15.15 to
20.35 bar, 220 to 295 psig**
1100 to 1515 kPa, 11.00 to
15.15 bar, 160 to 220 psig**
1450 to 1965 kPa, 14.50 to
19.65 bar, 210 to 285 psig**
1035 to 1450 kPa, 10.35 to
14.50 bar, 150 to 210 psig**
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