How to choose air cooled chiller for 1000W-2000W fiber welding machine

UW company is specializes in precise laser welding equipment. They use S&A air cooled water chiller with dual cooling circuit function to cool 1000W-2000W fiber welding machine.
For 1000W fiber welding machine, they choose S&A chiller CW-6200AT with dual pump & dual temperature, its cooling capacity up to 5.1KW and ±0.5℃ temperature stability; 
CW-6200AT technical parameter:http://www.teyuchiller.com/Products/ChillerCW6200ETfor10.html

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