AS 1735.19:2019 pdf free.Lifts, escalators and moving walks Part 19: Safety rule for the construction and installation of lifts – Lifts for the transport of persons and goods一 Remote alarm on passenger and goods passenger lifts.
4 Safety requirements and/or protective measures
4.1 General
4.1.1 Introduction
Alarm systems shall comply with the safety requirements and/or protective measures of Clause 4. In addition, alarm systems shall be designed according to the principles of EN ISO 12100 for hazards relevant but not significant which are not dealt with by this document.
4.1.2 Alarms
The alarm equipment shall ensure that subject to 4.1.6 alarm filtering, the full alarm information (see 4.1.7) will be emitted until acknowledgement, even during maintenance.
If an emission fails before acknowledgement, the delay between re-emission(s) shall be reduced to the minimum compatible with the communication network.
Where the characteristics of the communication network require (see EN 81-20:2014, 0.4.2 e)) and if the communication is interrupted any re-emission after acknowledgement shall not be impeded by the alarm equipment. The alarm system shall be able to accept communication from the rescue service until the end of the alarm has occurred.
Emission of the alarm information to the transmitter shall not be delayed, except during alarm filtering. Between the acknowledgement and the end of alarm, any alarm filtering shall be bypassed. After acknowledgement, if the communication Is interrupted, the alarm equipment shall stop automatic reemission.
4.1.3 End of alarm
Means shall be provided to enable indication, from the alarm system to the rescue service, that the alarm has been dealt with and no user is trapped in the lift.
The end of alarm shall be initiated from the lift installation to which the alarm belongs. The means to initiate the end of alarm shall be accessible only to competent persons.
Remote resetting of the alarm equipment shall be possible.
4.1.4 Emergency electrical power supply
Any alarm shall not be impeded or lost even in cases of electrical power supply switching or power supply failure.
Where an emergency electrical power supply is used, means shall be provided to automatically inform the rescue service and to indicate at the installation of the failure of the emergency electrical power supply. This is considered to occur whenever the emergency electrical power supply is incapable of holding sufficient capacity to provide one hour of function of the alarm system including 15 minutes voice communication.AS 1735.19 pdf download.