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(HVAC Variable Frequency Drive Solutions running on bypass can waste 56% or more energy for your HVAC air handling system; here’s how to get back to efficient usage)

08/02/2006


(HVAC Variable Frequency Drive Solutions running on bypass can waste 56% or more energy for your HVAC air handling system; here’s how to get back to efficient usage)

NEW BERLIN, WI, March 24, 2006 . . . Despite the economic advantages and significant energy savings available by using AC Variable Frequency Drives in HVAC applications, many building operators do not repair or replace drives when they fail; this is because the motors easily can continue to run through a bypass contactor. While this is a great solution for short-term outages, continued operation in this mode quickly becomes a very expensive way to operate a fan.

The challenge

Budget cuts and competitive pressures have reduced building maintenance staffs in many public and private enterprises. This frequently results in a re-prioritization of activities, forcing concentration on addressing issues which are required to be fixed at the moment. Repair items such as a HVAC drive system operating in bypass mode may be considered only a nuisance, to be dealt with as time permits. And of course, time seldom does so permit.

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