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HORIZON PIT PROP
General
The purpose of the Pit Prop is to provide 36" of pit in conformance with ASME/ANSI A17.1 Part
XXV, Rule 2500.8b, thereby, providing an area in the pit for maintenance and inspection.
Operation
The Prop is installed so that without complete bodily entry into the pit the prop can be rotated,
lifted and “set” in the UP position. In the UP “set or locked” position, the prop is designed to
physically stop and hold the loaded car at the governor tripping speed. By design, it will
immediately stop the downward movement of the elevator and support the loaded weight of
the elevator car without causing stresses and deflections in the car frame and platform
members.
Storage
During normal operation of the elevator, the Prop is lifted and rotated and lowered to its
storage position flat on the floor of the pit.
Deployment
Position the elevator so that the platform is a minimum of five (5) feet (1524 mm) above the pit
floor level. Use the hoistway access switch, if supplied, or the manual unlocking device and
open the lower landing door. In compliance with the code requirements, the Concord Pit Prop
can be deployed without full bodily entry into the pit area. The handle of the prop can be
reached while leaning into the pit area. Grab the handle and lift the prop UP to the vertical
position, lift and “set”. The Prop will automatically drop into the locked position when released.
Figure # 19 Pit Prop in “Set” (Deployed) Position
Figure # 18 Pit Prop in “Storage Position”
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