The NEWS - February 18, 2008 - (Page 18)

FOCUS Cherie R. Preville Of The NEWS Staff AHR EXPO POST-SHOW ISSUE: DRIVES & MOTORS Power of New Drives, Motors Are Seen EW YORK — Motoring down the aisles of the trade show floor at the International AirConditioning, Heating, Refrigerating Exposition (AHR Expo), show attendees couldn’t help but pass by some booths exhibiting new drives, bypasses, and motors. A.O. Smith Electrical Products Co. (www.aosmithmotors.com) debuted the Juggernaut™ inverterduty condenser fan motors for commercial air conditioning and refrigeration applications. There are some features that, according to Warren Doney, product manager, make the motors unique. The Class F insulation system helps motors survive up on a rooftop in a higher ambient condition. The VCM™ voltage change module “makes changing motors from 230 volt to 460 volt really easy, by just unplugging this device and moving it out to change voltages from 230 and 460,” described Doney. Another feature is the “removable rigid base that screws onto the side of the motor, so the service contractor can carry one motor in stock. If then he needs a rigid base, it has it on, if he doesn’t need it, he can unscrew it and take it of,” said Doney. Danfoss Drives (www.danfoss drives.com) brought its new VLT® Advanced Active Filter to the AHR Expo. Ed Smith, regional sales manager, depicted the product by saying, “It looks at the power system, and if its distortion caused by a drive or just distortion in general, it will correct for that distortion, basically producing sinusoidal waveform regardless of what’s going on in your power system. … It’s just like a drive but to the power line instead of the motor.” It has a voltage range of 380-480 vac 50-60Hz, and 500-690 vac 50-60Hz. The VLT Advanced Active Filter can be wall-mounted. Another new product that the company showed off was the Electronically Controlled Bypass (ECB). To illustrate how it works, Smith described the ECB by saying, “What we’ve done is come up with an ECB where the motor’s going to run off the line power, off the drive, right from the keypad. If the drive fails, you can push this N button, and run the motor across the line. And you can say, ‘Well that button is right on the drive.’ This is on the control side. If something happens to the power section of the drive, you can still use the logic of the drive to run the motor even in bypass.” Features include bypass fault logging and time stamping, operation off of any two of the three input phases, and a separate power source for drive logic. It has an advanced firefighter’s override, coordinated with the VLT HVAC drive’s firefighter’s override mode. Eaton Corp. (www.eaton.com) introduced the CFX9000 clean power adjustable-frequency drive. It uses integrated tuned passive fi lters to significantly reduce harmonics at the drive terminals. In addition to reducing harmonic distortion, the drive prevents Once again, we’re revolutionizing whole-home humidification. Our new line delivers more. Extensive customer research revealed that customers wanted more in whole-home humidification. Our new line was designed to help you meet their requests. An upgraded Automatic Digital Control Panel delivers more information about the unit’s operation. And both Automatic Digital and Manual Control are now available at every capacity. Take advantage of the revolutionary profit opportunities our new line delivers. Just what you’d expect from Aprilaire. To learn more, contact your Aprilaire representative or visit AprilaireContractor.com eProduct #39 at achrnews.com 18 http://AprilaireContractor.com http://AprilaireContractor.com http://WWW.ACHRNEWS.COM

Table of Contents Feed for the Digital Edition of The NEWS - February 18, 2008

The NEWS - February 18, 2008 Turnout Contents Newsline FYI Unitary Oil-Fired Products Furnaces Hydronics Ductless Rooftops Drives & Motors Controls Transmitters, Sensors Zoning Valves Refrigerants Condensers & Coils Heat Exchangers Cooling Towers Chillers Duct Products Humidification IAQ Monitors, Instruments Trucks Tools Software Installation, Maintenance of HVAC Coils Munters MCS Dries Up Water Concerns at Hospital Michigan Home Show Brings out Contractors Investigating Furnace Failures Mold/Bacteria Protection of A/C Coil Learning Center Classifieds Advertisers Opinions

The NEWS - February 18, 2008

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