MRL Elevator

Machine room less elevator

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 hoisting machines are using gearless synchronous motors instead conventional induction motors. This design eliminates the need of a fixed machine room and thus saves much building’s space. Almost all the traction MRL elevators are gearless traction.

  • Travel: Maximum of 50’0″ (minimum 12” between stops)
  • Speed: 40 feet per minute
  • Rated Capacity: 1,000 pounds
  • Pit depth: 6” minimum (8” preferred)
  • Stops: Two
  • Opening: Single
  • Overhead: Minimum of 7’10″ (94 inches) with a 7’0″ interior car height
  • Warranty: Three-year limited parts
  • Modular 6-1/4 pound T-rail structure
  • Car frame assembly
  • 208/230 VAC, 60 Hz, 30 amp, single-phase power supply for motor controller
  • 120 VAC, 60 Hz, 15 amp, single-phase power supply
  • Code-compliant electrical disconnects included*
  • Two 3/8″ 7×19 galvanized aircraft cables (14,400 lbs. breaking strength) with wedge rope shackles
  • 80 mm diameter piston/102 mm diameter cylinder including 3/4 inch reducer bushing
  • 3 HP submersed motor with 2-speed valve assembly
  • Manual down valve for emergency lowering
  • Slack rope safety device
  • Line rupture valve 
  • Motor controller supply disconnects (located in controller)
  • Car light supply disconnects (located in controller)
  • Pit stop switch
  • Car-top stop switch
  • In-car emergency stop switch and alarm
  • Safety switch for car gates/doors
  • Battery backup emergency car lights and alarm
  • Electro-mechanical hoistway door locking devices (doors by others)
  • Enhanced gate/bypass monitor
  • Programmable Logic Controller (PLC)
  • Non-selective collective automatic operation
  • S.M.A.R.T. System (Self-Monitoring Alert Response Technology)*
  • Car Operating Panel (COP) with LED floor position indicator §
  • Hall stations with call button and LED floor position indicator §
  • Recessed phone box (phone jack included) §
  • Automatic car lighting
  • Single floor designated car homing
  • Uninterruptible Power Supply (UPS) for car lowering and automatic car gate/door operation (if provided) in the event of power failure*
  • Car size up to 15 square feet
  • 7’0” interior car height
  • Birch, Oak, or Maple flat veneer interior walls with flat ceiling*
  • Matching wood handrail
  • Matching wood car sill
  • Unfinished plywood floor with sill set for 3/4” (flooring by others)
  • 2 energy-saving recessed LED lights with Black trim rings*
  • Light Oak, Birch or White 7’0” laminate accordion door
  • Up to six stops
  • Single automatic push button operation
  • Custom car size up to 18 square feet**
  • Custom car heights
  • Shaker or Recessed panel car with flat ceiling
  • Shaker, Recessed or Raised panel car with matching ceiling
  • Four recessed LED lights with Black, Polished Brass, Brushed Nickel or Bronze trim rings*
  • Factory-finished car
  • Fixtures including COPs, hall stations, phone boxes and handrails available in:
    • Polished or Blackened Stainless Steel
    • Brushed, Polished or Oil-Rubbed Solid  Brass
    • Powder-Coated Black or Vintage Bronze
  • COP with integrated keypad phone
  • Custom wood interiors
  • Custom factory finish, Distressed*
  • “Green” material alternatives and finishes for car interiors*
  • 3/4 inch finished or unfinished installed hardwood car flooring
  • Factory flooring insert for 1/4 inch flooring by others
  • Buffer springs (requires minimum of 8-1/4 inch pit depth)
  • Key switch for COP and/or hall stations
  • Rated Capacity: 750 and 950 lbs.
  • Light curtain monitoring the car entrance
  • ‡Symmetry Safety 3-Panel car door* 
  • Two or three speed car door or car and landing doors
  • Wrap around car door ‡
  • Enterprise collapsible gate
  • Dark Oak, Chalk, Antique White, Cherry, Walnut or Black laminate accordion door
  • Hardwood veneer accordion door
  • Clear or Smoked acrylic panel accordion door
  • Automatic car gate/door operator (not available on Enterprise collapsible gate)
Symmetry warrants the Roped Hydraulic, Inline Gear Drive, and Winding Drum Residential Elevators to be free from defects in material and workmanship under normal use and service for a period of three (3) years.

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