Apache Junction, Ariz., is one of the harshest and hottest climates in the United States. Last winter Burke Alford, maintenance manager for the Safeway supermarkets, was faced with the dilemma of replacing another evaporative condenser. The company decided to consider a new hybrid condenser technology.

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Highly-efficient AK/AJ condensing units have been added to the Celseon® line of products. Each unit has an ultra-reliable, single-phase, PSC (permanent split-capacitor) motor, which does not require a starter (115V 60Hz and 208-230V 60Hz are available).

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The NEWS reports on new products found by our editors at the recent AHR Expo in Chicago. Products are listed in alphabetical order within each category.

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A heavy hurricane and tropical storm season may bring more corrosion damage to HVACR systems than we normally see. Now, as many contractors start to clean up systems, and others are scheduling preventive maintenance customers, coil care and corrosion prevention should be high on the work list.

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The Electronic Unit Controller is designed for Copeland® condensing units with low-pressure controls. According to the manufacturer, electronic pressure-sensing accuracy maintains a tighter low-pressure control tolerance.

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Many refrigeration systems are installed using an outdoor air-cooled condenser. When these systems are installed in a climate where the outdoor temperature drops below 60°F, some means of preventing the condensing pressure from dropping too low must be incorporated into its design.
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It is one thing to install efficiently running refrigeration equipment. But it also has to be energy efficient - according to a wide range of standards. That’s why Emerson recently issued a white paper called Status of Energy Regulations for Commercial Refrigeration Equipment.
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When a refrigeration system fails, many times the cause can easily be diagnosed. However there are occasions when the cause cannot easily be determined - either the true cause is unclear or the technician is unsure of a problem. How do you work through these jobs? One method used by some techs is to “read and record.”
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It is one thing to install efficiently running refrigeration equipment. But it also has to be energy efficient – according to a wide range of standards. That’s why Emerson recently issued a white paper called Status of Energy Regulations for Commercial Refrigeration Equipment.
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Some years ago it was common for air-cooled condensers to develop leaks, resulting in unpredictable shorter service life. By studying the causes, it’s possible to come up with solutions. It became obvious that vibration was the major culprit, and thermal expansion/contraction creates some specific problems where the hot gas first enters the coil.
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