The EarthWiseâ„¢ purge system removes air, moisture, and other noncondensables from low-pressure chillers that use R-11, -113, or -123. The company says the system has an advanced touch-control screen display, which allows more information to be viewed, in a simple, easy-to-read format. It is ARI-rated at 0.02 pounds of refrigerant per pound of air emissions, without the need of an external carbon emission collection canister. The purger has a self-re-generating carbon tank that eliminates the service cost and refrigerant loss associated with separate carbon tanks, the company says. It has a free-flow design that returns refrigerant to the chiller condenser and eliminates the need for tank float valves and control switches, states the manufacturer.

Trane, an American Standard Co., 3600 Pammel Creek Rd., La Crosse, WI 54601-7599; 888-872-6310; 608-787-2996 (fax);

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