Es-service has designed the project of modernization of emergency (auxiliary) brake of escalators ET-2(M) and ET-3(M) types — replacement of old emergency brake to normal-closed emergency brake Es-service with constant moment. Es-service emergency brakes are installed and successfully operating in Moscow and Saitn-Petersburg metros. The benefits of Es-service emergency brakes are as following:
- Absence of the pair screw-washer (absence of ratchet) — makes easier to produce and to maintenance;
- No screw-washer safety device is necessary;
- Significant decrease of time for escalator operation recovery after emergency stop, auxiliary drive is not necessary for this;
- Emergency brake stays active in the case of power supply failure;
- Very reliable and very simple for service;
- Emergency brake can be replaced in maintenance room without transportation to the factory.