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Publications of NA 031-02-06-01 AK

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DIN 14677-1 2025-09 Draft standard Maintenance of electrically controlled hold-open systems for fire and smoke door assemblies as well as for electrically controlled hold-open systems for fire barriers in the course of ground-bound conveying systems - Part 1: Maintenance measures More 
DIN 14677-2 2025-09 Draft standard Maintenance of electrically controlled hold-open systems for fire and smoke door assemblies as well as for electrically controlled hold-open systems for fire barriers in the course of ground-bound conveying systems - Part 2: Minimum qualification and proof of competence of maintenance personnel More 

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