Subscribe to the Technology Toolbox RSS feed | Windblown dust and water pose challenges for some HVAC applications. The new NEMA/UL Type 4X VLT HVAC drives from Danfoss VLT Drives are suitable for HVAC applications subject to harsh conditions, including air handlers, pump stations, and cooling towers. Cast aluminum parts are powder-coated with a durable epoxy, and there is no need for a separate enclosure. The drives can be mounted at the equipment location to minimize install costs and cable runs.
“This design incorporates a unique cooling concept that can accommodate high ambient temperatures without de-rating or external cooling,” says Steve Gmeinder, product manager of HVAC for Danfoss VLT Drives (www.danfossdrives.com).
All of Vortec’s HazLoc Vortex A/C units are designed for use in hazardous locations, including the Dual HazLoc Vortex A/C, which has higher cooling capabilities than the other HazLoc Vortex A/C models. The enclosure cooler solutions operate in environments up to 175 °F and are built to ensure that no ambient, dirty, or humid air enters the cabinet. The units protect against equipment failure due to overheating and minimize noise with 62 dBA operation.
“The unique features incorporated into the line of UL Classified Hazloc Vortex A/C models give them the flexibility to be installed on the top or side of small or large panels in extremely hot locations, where large and expensive explosion-proof Freon air conditioners would not be viable,” says Steve Broerman, Vortec (www.vortec.com) engineering manager.
Warranty service
Reliability is expected in industrial HVAC investments. Denso recently increased the warranty on its MovinCool portable spot air conditioners to cover parts and labor on the entire unit for three years. The MovinCool Office Pro, Classic, and Classic Plus lines are included. Confidence in the product design is the reason for the increase. For instance, the fan motors are fully enclosed in a protective housing to avoid motor build-up, which causes corrosion and electrical shorts.
“We hermetically seal our refrigeration units instead of using service valves, which can leak,” says David Keller, manager of MovinCool/Denso Products and Services Americas (www.movincool.com).
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