Elevator Maintenance Warnings | APAC

Safety requirements to use light and sound to warn workers of car movement has been implemented
During elevator maintenance, a maintenance worker works inside the pit located at the bottom of the hoist way, and other workers control the car movement outside the elevator. In such situations, the worker outside the elevator, without knowing that there is a person left in the pit, might mistakenly operates the car to run. In worst cases, the car might be descended to nearly the bottom, resulting in the collision between the worker and the car/counterweight. In order to minimize such risks, the new safety standard EN81-20 implemented in Europe in 2014 requires the following two points in car operation during maintenance: 1) Audible signal at the car and flashing light signals under the car to be activated during car movement, 2) Sound level to be minimum 55dB at 1 meter below the car. As the new safety requirements will likely be implemented in Japan in the future, system designers of elevator must be studying how to meet the new requirements.

Ensure safety during car movement easily
The most general, yet the most complicated method to meet such requirements would be: use a pilot light, a buzzer and a cable, and add a flicker circuit to the control system to turn ON/OFF at certain intervals. Adopting this complicated method to all elevators will increase the manufacturing cost considerably.

Enter IDEC’s HW1Z illuminated buzzer. It emits light and alarm sound, and is equipped with a flicker circuit. All you have to do is to add a o22mm mounting hole under the car, install the HW1Z, and the new safety requirement is now satisfied. HW1Z can be also installed in emergency elevators where waterproof performance is required, because it is IP65 waterproof. Cost and time can be minimized to ensure the safety of elevator with the new innovative illuminated buzzer.
 

Switches, pilot lights, and other products available to meet the new safety standard requirements
IDEC, a leading company in switches and pilot lights, has a broad range of switches and pilot lights in addition to the HW1Z illuminated buzzer. Consult with us if you have any issues or concerns regarding the new safety standard requirements such as, “What should we do?,” or “We have come up with possible solutions, but not sure if they are in compliant with the standards,” etc. IDEC has long helped varied industries achieving safety measures. Now let us work with you.