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Door Safety Edges — Frequently Asked Questions
What is the difference between a mechanical safety edge and a light curtain?
A mechanical safety edge is a contact device — it must physically touch an obstruction to trigger the reopening signal. A light curtain projects infrared beams across the door opening and detects intrusions before any contact occurs, offering faster response and no wear from repeated activation. EN 81-20 permits both technologies; light curtains are preferred for high-traffic installations where mechanical edges wear quickly, while mechanical edges remain cost-effective for low-traffic or budget-retrofit applications.
How often should door safety edges be inspected and replaced?
EN 81-20 and TS EN 13015 maintenance protocols require functional testing of door safety devices at every periodic inspection visit, typically every one to three months depending on traffic class. Mechanical rubber edges show visible cracking and compression set after 500 000–1 000 000 door cycles. Light curtains should be cleaned monthly in dusty environments and alignment checked every six months. Component life data from Turkish manufacturers typically indicates 3–5 year replacement intervals under normal use.
Are safety edges available for glass and frameless elevator doors?
Yes. Slimline profiles as thin as 8 mm attach to the edge of glass door panels using adhesive-bonded aluminium extrusions and concealed wiring channels. Wireless light-curtain transmitter/receiver pairs eliminate the need for cable chains on sliding glass doors. Turkish suppliers offer custom-length profiles and OEM private-label manufacturing for door panel manufacturers integrating safety edges at the factory.
What certifications are required for door safety edges in export markets?
CE marking under the Machinery Directive 2006/42/EC is mandatory for EU markets. EAC certification (TR CU 010/2011) is required for Russia, Kazakhstan, and other EAEU member states. Gulf markets generally accept CE-marked products but some projects specify additional UL or SASO certification. Turkish exporters typically maintain CE and EAC in parallel, providing dual-certification packages for international tender specifications.