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Green chilling


A green portable chilling line from Sterling (New Berlin, WI) claims to be the first in the industry to use R410a refrigerant designed to meet new regulatory requirements that will take effect in 2010. The GP Series controls fluid temperature to within 0.1 deg F. Electronic sensors with digital readout include leaving and entering fluid temperatures, compressor suction pressure, compressor discharge pressure, condenser inlet temperature, superheat, subcool, pump pressure, and tank level. Monitoring the conditions of the chiller provides adaptive control, where the operator can adjust the operation of certain components when the chiller approaches an alarm condition in an effort to keep the chiller running with minimal to no downtime.

A magnetic connection on the control interface allows it to be mounted anywhere on the unit, and the processor can fit the chiller anywhere since there is no front or back to the unit. The control’s cable can also be extended to have the control unit mounted anywhere on the process line. All GP Series chillers, available in air- and water-cooled models, offer a leaving coolant temperature range of 20-80°F.

Optional Web access to the control allows Sterling or other qualified technicians to remotely diagnose alarms and see real-time data. The control includes alarm history and capacity profile information. [email protected]

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