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Suction and leak-stop mode is standard for non-pressurized units. They have heaters of 6 and 9 kw and pumps of 0.7 to 1.5 hp. They heat water to 284 F and oil to to 572 F. Motan brought out Motemp TCUs (built by Regloplas in Switzerland) for hot water, pressurized water, and oil.

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Comet plans to introduce portable chillers later on. Some models operate in pressure or suction mode. Water-or-oil models have 6 or 15 kw and heat water to 194 F and oil to 302 F. Hot-oil units operate at up to 356 F with 6 or 9 kw. Hot-water units have 6 or 9 kw and operate at up to 356 F.

Wetted components are stainless steel, copper, or brass.

Comet Automation introduced its first TCUs, which it assembles from Chinese components as well as corrosion-free pumps from Speck in Germany.

It is very compact (about 12 x 23 in.), heats to 250 F, and has a cast-iron pump of 0.75 to 7.5 hp.

Colortronic entered this field with a brand-new economical water TCU called the ECU Series.

NPE saw three companies begin offering TCUs for the first time: Mokon also claims to be the first supplier of circulating-fluid temperature controls to provide UL-la beled electrical sub-panels as standard on all its equipment.

It also indicates hours of operation and date of last maintenance. Another version has a programmable touchscreen with plain-English alarm messages and instructions for fixing problems.

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One version has LED readout of set and actual temperatures plus built-in capacity control of compressors and condenser fans, and built-in delay functions. Mokon also offers controls from Carel of Italy on its central and portable chillers. Its 1/16 DIN size is smaller, and it has a dual LCD display of set and actual fluid temperatures, plus auto air purge and self-tuning. One is a new Eurotherm controller for its complete line of chillers and TCUs. The company also offers two new controls as standard options. In addition, Mokon now supplies stainless steel as the standard construction (formerly optional) for its pump tanks. They are factory-wired and pre-tested and mounted on frames designed for easy mechanical lifting. They are designed for ambient temperatures of 0В° F to 115 F and come in 10- to 500-ton capacities.

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New from Mokon are outdoor air-cooled central chillers, which free up indoor space. Likewise, color touchscreen control interfaces are becoming more widespread, though not yet to the overwhelming degree seen in other auxiliary equipment. In addition, the industry trend toward increased utilization of stainless steel-at little or no cost increase-was evident in cooling equipment as in other auxiliaries. Some low-cost equipment from Asia, or based on Asian components, also appeared at the show. Three firms brought out their first TCU lines and one made its debut in cooling towers. market, bringing a new concept designed to save energy and maintenance costs. There was also the arrival of a new supplier of chillers and TCUs to the U.S. The biggest news was the proliferation of vendors and models of central chillers utilizing a new type of quiet, energy-saving compressor.

The news in chillers, mold-temperature-control units (TCUs), cooling towers, and related equipment was somewhat sparse at this yearвЂ™s NPE show. It also has a tilting vessel to make annual media changes easier. TowerKleanвЂ™s new TK2 chemical-free water-treatment system is more compact but has double the previous volume.