Air-cooled heat exchanger (ACHE) drives can spin backwards when fans
are off but subjected to air movement across the fan blades. This is known as
back-drafting or wind-milling and can be dangerous. Technicians are often in
close contact with the drive, and in extreme situations bodily damage occurs
due to back-drafting. DraftguardTM anti-rotation device secures the drive from
spinning backwards during maintenance operations. Draftguard also protects the
entire system from extreme shock load which causes unnecessary wear of the
motor components and which can lead to belt breakage. Often design engineers don't consider the effect a drive which rotates
the opposite direction causes. Draftguard protects the drive from damage, or
other unsatisfactory events from occurring, when units back draft. The design of the flange plate allows
Draftguard to mount on nearly any bushing or shaft which eliminates the need of
retrofitting drive components. Gates Draftguard can be mounted to prevent
rotation in either the clockwise or counter clockwise direction. It can easily
be mounted on either vertical or horizontal shafts and typically fits within
the existing fan cage.
Being in an incubator can be analogous to shopping in a “big box retailer.” You can find many things you need under one roof along with moral support to sustain and move your startup to a successful launch.
Scientists at four major universities in Europe have released a joint paper describing the use of light to put active materials into motion and to control that motion, producing lifelike mechanisms that may or may not contain living organisms, but can produce useful work.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.