Vertiv Liebert iCOM - Page 38

Figure 3.3 Compressor Control—One Step Capacity
No. Description
1 Single scroll compressor.
2 ½ of proportional band.
3 Deadband.
Two Scroll Compressors without Unloaders
• 70° setpoint
• 8° proportional band
• 2° deadband
In Figure 3.4 on the facing page :
Compressor1 starts at 73° when the cooling requirement is 50% and continues to operate until 71° is reached when cooling
requirement is 0%.
Compressor2 starts at 75° when the cooling requirement is 100% and continues to operate until 73° is reached when cooling
requirement is 50%.
3 Service Operation
30
Vertiv™ Liebert® iCOM™Installer/User Guide