ASME A17.1 Firefighter Phase I & II Key Switch Standards for High-Rises
Engineering Overview: Regulatory guide on ASME A17.1 / CSA B44 elevator safety codes mandating standardized cylinder key switches for Phase I and Phase II fire operations.
Technical & Engineering Specifications
| Standard | ASME A17.1 / CSA B44 Safety Code for Elevators |
|---|---|
| Mandate Scope | All Commercial & Multi-Family Elevators |
| Cylinder Format | High-Security Tubular or Profile Switch Core |
| Key Switch Functions | Phase I (Recall) & Phase II (In-Car Fire Operation) |
Elevator Fire Recall Codes
Under ASME A17.1 Section 2.27, all commercial building elevators must feature standardized firefighter key switches.
Phase I & II Key Functions
- Phase I Emergency Recall: Key switch on main lobby panel recalls all elevator cars to ground level.
- Phase II In-Car Operation: Allows firefighters to manually control elevator car travel during high-rise rescue operations.
Frequently Asked Engineering & Selection Questions
Q1: What standard or test protocol is defined here?
Regulatory guide on ASME A17.1 / CSA B44 elevator safety codes mandating standardized cylinder key switches for Phase I and Phase II fire operations.