This is a pneumatic power transfer – the LCN 4840-460.

Joe Cross of Allegion sent me today’s Fixed-it Friday photo, and I couldn’t believe what I was seeing.  This door serves a gymnasium in an elementary school.  The automatic operator is pneumatic and air is used to open the door instead of electricity.  A pneumatic unit was installed here because the reveal on the door frame (distance from face of frame to face of door) was too large for an electrohydraulic unit.

Normally, a pneumatic power transfer, which looks very similar to an electric power transfer (EPT), would be used to supply air to the pneumatic auto operator.  This piece of hardware would have been concealed in the edge of the door and the frame rabbet, protecting it from damage.

Unfortunately, the installer had other ideas…


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