Machine room-less elevators are also referred to as MRL. With an MRL elevator the drive and controller are located in the hoistway eliminating the need for a separate machine room. This can be ideal if you don’t have the space for a machine room but still want a larger cab that can serve up to 5 landings. MRL’S are available in counterweight electric chain drive and cable drive systems.
The Machine room-less elevator offers:
- Reduced footprint
- Standard cab sizes
- Access for multiple floors 2-5
- Better protection of control equipment in areas prone to flooding
Counterweight electric chain drive with motor and controller at top of the hoistway. Another advantage to this type of elevator is protection from water damage. Ideal for installation at waterfront properties or areas that are under floodplain management regulations the elevator equipment is located high off the ground.
Similar to a traction elevator the weight of the car or cab is balanced by a counterweight system.
With the benefit of a reduced footprint comes a trade-off. In the future when the elevator needs repairs or maintenance it can be difficult for a technician to access the equipment. From this perspective a separate area to house the drive and controller are always recommended. If the space is available a machine room can simplify these processes and also reduce cost on upkeep.