2201Q4JE-MY-C9-N_2018.01.
Chapter 2 Compressor Specifications and Structure
Compound 2-stage Screw Compressor 4032**C
2.3
Compressor Specifications
2-3
2.3.2 Operation Limits
Table 2-3 Operation Limits of 4032**C
Items
Operation Limits
Maximum discharge pressure
MPa
1.96
Minimum suction pressure
MPa
−0.080
Maximum intermediate pressure
MPa
0.588
Minimum intermediate pressure
-
> Suction pressure
Oil supply pressure
･
Maximum journal lubrication pressure
MPa
Discharge pr 0.39
･
Minimum journal lubrication pressure
MPa
Discharge pr0.049 and
Suction pr0.49
･
Minimum oil injection lubrication pressure
MPa
Suction pr0.49
Maximum Suction temperature
°C
85
Minimum suction temperature
°C
−60
Maximum low-stage discharge temperature
°C
90
Maximum high-stage discharge temperature
°C
100
Maximum oil supply temperature
°C
60
Minimum oil supply temperature
°C
30
Maximum male rotor rotation speed
min
-1
3600
Minimum male rotor rotation speed
min-
1
1450
Note: Unless otherwise noted, the pressure unit MPa represents the gauge pressure in this manual.
If operation at partial load, which is not greater than 30 % of the indicated load, is
continued for a long time except when starting up the machine, abnormal noises or
vibration may be generated. So avoid such operation.
Repeated startup and stop in a short period is harmful not for the startup devices
and electric machinery but also for the compressor itself. For information on the
start/stop limitations, refer to each instruction manual. Wait at least 15 minutes
after stopping the compressor before restarting it.
