Has anyone had experience with commissioning acceptance tests with automatic sliding doors. The last set of sliding doors I witnessed being tested created a major problem for the installer, a major player. Apparently there is a problem with failing the power to the door and getting the door to automatically retract. As I understand it, several installations do not fail open but remain secure until the built in sliding door battery backup loses its charge when it then become unsecure and the doors can be manually prised apart. That arrangement does not comply with C/AS2 3.15.7 b) (and all the previous versions of C/ASx).
I am interested in the experience of other fire engineers having to sign PS4’s for these installations. As I understand it, the auto sliding door needs a separate UPS to maintain door security in the event of a power cut and the door controller is programmed to automatically open on failure of the power supply - the UPS.