Florida Door Lock Monitoring
Door Lock Monitoring (DLM)
- Code Reference:
ASME A17.3-2020, Part 3.10.12. - Requirement:
All elevators must have a system that prevents movement if door contact circuits are faulty. This ensures the elevator cannot operate unless doors are fully closed and locked. - Compliance Deadline:
August 1, 2025 (extended from December 31, 2023). - Implementation:
- Pre-2000 elevators: Likely require hardware upgrades (e.g., new controllers).
- 2000–2009 installations: May need software updates or minor hardware modifications.
- Post-2009 installations: Typically compliant but require verification (some systems may need activation).
- Modernization: Upgrading the entire system is recommended for older elevators to ensure compliance and future-proofing.
Secondary Brakes (Unintended Car Movement Protection)
- Code Reference:
ASME A17.1-2019, Section 2.19.2. - Requirement:
Traction elevators with single-plunger brakes must install dual-plunger brakes or unintended car movement (UCM) protection (e.g., rope grippers) to prevent uncontrolled movement during brake failure. - Compliance Deadline:
August 1, 2028. - Options:
- Dual-Plunger Brakes: A complete brake system overhaul for enhanced safety (higher cost, longer installation).
- Rope Grippers: Cost-effective solution that clamps hoisting ropes during unexpected movement.
Additional Details
- Phase II Firefighter Operation:
Elevators must be tested to ensure they exit emergency mode only when the fire switch is off, doors are open, and the car is at the designated level. - Cost Estimates:
- Contact Solucore to obtain a DLM compliance budget cost per elevator for your site.
- Modernization may be more cost-effective long-term and Solcuore can assist with budget estimates. - Permitting:
Allow 6+ weeks for permits due to high demand as deadlines approach for DLM retrofits.
Contact us:
(561) 900-3622
Email us at info@solucore.com
