Machine room less elevators do not have a fixed machine room on the top of the hoistway, instead the traction hoisting machine is installed either on the top side wall of the hoistway or on the bottom of the hoistway. The motor is installed using a permanent magnet which “sticks” the motor permanently and work with Variable Voltage Variable Frequency (VVVF) drive. Some of the hosting machines are using gearless synchronous motors instead conventional induction motors. This design eleminates the need of a fixed machine room and thus saves much building`s space. Almost all the traction MRL elevators are gearless traction.
Safety Rules For The Construction and Installation of Lifts
EN 81-1 Europa Standarts
EN 81-20 Europa Standarts
EN 81-28 Remote alarm on passenger and goods passenger lifts
EN 81-70 Accessibility to lifts for persons including persons with disability
EN 81-73 Behaviour of lifts in the event of fire