The Conair Group, Cranberry Township, Pa., will show an example from its new EP1 and EP2 Series of portable chillers. EP1 models range from 1 to 3 tons and EP2 from 4 to 43 tons. Both come in air-cooled, water-cooled, and remote-condenser models. The 1-ton EP1 chillers have rotary compressors and all larger models have scroll compressors (dual compressors for larger than 20 tons, allowing compressors to be staged for low loads). All have an insulated polyethylene reservoir with a removable top for easy cleaning.
EP1 models have a 2.5-min anti-cycle timer to prevent excessive compressor cycling, plus a low-load thermostat and noncycling low-pressure switch to protect the compressor from damage and unnecessary wear. Water- and air-cooled EP1 units ship with a full refrigerant charge to save time and money; units with a remote air-cooled condenser ship with a nitrogen charge.
EP2 chillers come standard with microprocessor control and two LED displays for set and actual temperatures, or an optional PLC with touchscreen.
Water-cooled models have cleanable shell-and-tube heat exchangers, while air-cooled versions have condensers with aluminum micro-channels that require less refrigerant while exposing it to a larger surface area for greater energy efficiency.
Moretto S.p.A. of Italy, newly represented here by Advanced Blending Solutions, Menominee, Mich., has expanded its range of hot-water temperature-control units (TCUs). The Teko line now includes pressurized models for higher temperatures.
Meanwhile, Wittmann Battenfeld (U.S. office in Torrington, Conn.) is bringing to the show its new Tempro basic C120 line of direct-cooling water TCUs with reduced footprint and increased capacities (see June Keeping Up). They go up to 10 tons with heating capacity to 18 or 24 kW (46 kW optional), and pump capacities up to 280 l/min.