New Elevator Technology: The Machine Room-Less Elevator

Instructions

• Read the article "New Elevator Technology: The Machine Room-Less Elevator"
• Complete the questions below, then fill in your answers.
• Fill out and submit the AIA/CES education reporting form in the magazine, securely online, or print the form to receive one AIA learning unit.

Questions:

Program Code: 097SPONA
LU: 1

1. Traditional passenger elevators generally employ the following two different hoist mechanisms:
a. Hydraulic and traction
b. Geared traction and machine room-less
c. In-ground piston and above ground piston
d. Machine room-less and gearless traction

2. An in-ground hydraulic elevator typically requires a
a. pair of hydraulic jacks.
b. machine room.
c. counter weights.
d. a hole below the bottom landing.

3. A gearless traction elevator operates by
a. hydraulic fluid powering a piston.
b. a motor rotating the sheaves directly.
c. a rotating sheave driven by a counterweight.
d. a machine mounted on guide rails.

4. The drawbacks of the traditional hydraulic elevator include:
a. cannot operate above three floors.
b. high installation costs.
c. requiring an overhead machine room.
d. limited speed and performance.

5. Safety requirements for Machine Room-Less elevators are
a. not yet covered by a national code.
b. adopted by all local and state code authorities.
c. covered by ASME A17.1/CSA B44-2007.
d. exist only in the United States.

6. Elevators powered by a permanent magnet synchronous motor (PMSM)
a. require a separate machine room.
b. have higher energy consumption than traditional motors.
c. require less energy to start than traditional motors.
d. use oil.

7. Machine Room-Less elevators
a. are rarely found in Europe and Asia.
b. require the same space as traction elevators.
c. always have the machine mounted on the rails.
d. use 40 percent to 60 percent less energy than hydraulic or geared
traction elevators.

8. When installing a Machine Room-Less elevator architects should be aware that:
a. there are no weight limits on interior cab design.
b. all product lines have similar attributes and dimensions.
c. the high-horsepower machine requires heavy-duty wiring.
d. building requirements differ for different product manufacturers.

9. MRL control rooms
a. may be 400 wire feet from the machine.
b. may be 100 wire feet from the machine.
c. must have their own adjacent room.
d. must be integrated in the hoistway on the top landing.

10. MRL machines can be
a. supported by beams at the top of the hoistway.
b. mounted on guide rails.
c. mounted in the overhead space.
d. all of the above