Code and Regulatory Updates
Code Compliance Deadline
ASME A17.3-2002, Appendix K, Chapter K3, Section 3.8.4.1 Single plunger brakes. (a) All existing traction elevators with single plunger breaks must comply with either of the following by January 1 2027: (1) Alteration of single plunger assemblies to dual-plunger type, or (2) Compliance with Unintended Car Movement Protection as specified by Section 2.19.2 of ASME A17.1.
Effective: January 2015
Deadline for compliance: January 2027
TEI installs and services the Hollister-Whitney Rope Gripper Elevator Brake, which is a code compliant, unintended car movement system.
The Hollister-Whitney Rope Gripper, was developed for the purpose of gripping elevator suspension ropes to stop an elevator in the event of a mechanical or electrical failure. It is an imperative safety device in the event an elevator overspeeds in the up direction or if the elevator leaves the door unintended with the doors opened.
The Hollister-Whitney Rope Gripper, was developed for the purpose of gripping elevator suspension ropes to stop an elevator in the event of a mechanical or electrical failure. It is an imperative safety device in the event an elevator overspeeds in the up direction or if the elevator leaves the door unintended with the doors opened.
- Protects against Ascending Car Overspeed (ACO) and Unintentional Car Movement (UCM)
- Auto Reset on simple power loss
- Manual Reset required to clear actual fault
- Includes the necessary encoder
- Prevents unintentional motion with the door open caused by brake, control, or drive failure
- Protects against descending car overspeed-less severe stop than safeties