Disc Anti Reversing Device
Cooling Tower Parts
The Marley external Disc Anti-Reversing Device (ARD) backstop is a custom designed, welded stainless steel assembly that is bolted directly to a Marley Geareducer® with input shaft diameters from 1.125″ up to 2.625″. Specifically designed for all right-angle Geareducer models the Disc ARD prevents reverse rotation of the fan, Geareducer and motor and can be field installed.
Under reverse rotation, the eccentric mass of the Disc ARD pawls extend away from the rotating disc and engages the stop bracket catch point, preventing the mechanical equipment from operating in reverse direction.