Machine Room Less Elevators: Rail Supported

MRL – Rail Supported

MRL Car Type Summary

The group one “Machine Room Less” is an engineered package design that utilizes an efficient gearless permanent magnet machine. This machine, with all the related traction components, is installed inside the hoistway eliminating the need for a machine room.

Engineering support and service
Shop drawings and group one installation drawings
Consolidated shipment when complete package is ordered

Advantages for the building owner:

Saving on valuable floor space
No contamination to the ground like on hydraulic applications.
Greater power efficiency
Superior performance and ride quality
Reduction on the elevator power feeder

Equipment Included:

Gearless MRL PM Torin machine
Governor and tail sheave
Factory pre-assembled overhead machine frame
Counterweight frame and weights
Car & cwt roller guides with mounting plates
Sling including: Crosshead, stiles, bolsters, brace rods, strike plates
Platform with toe guard
Buffer stands, spring or oil buffers
Safeties
Underslung assembly with deflector sheaves
Guide rails, rail brackets with spreader plates, clips and fasteners
Car & cwt ropes and wedge sockets
Limit switches, mounting brackets & cam
All hardware included in labeled bags

Equipment Capabilities:

Passenger & service cars
Capacities from 2,100 lbs up to 3,500 lbs
Speeds from 100 FPM up to 350 FPM
Travel up to 50’-0”

Please contact DEM EE on all for drawings.

MRL Front Opening Dimensions

CAPACITY (LBS.)	PLATFORM W X D	HOISTWAY W X D	CLEAR OPENING	CLEAR INSIDE W X D	SSSO DOOR	SSCO DOOR
P2100-FO	6’-0” x 5’-1”	7’-8” x 5’-10”	3’-0”	5’-8” x 4’-3”	X
P2500-FO	7’-0” x 5’-1”	8’-8” x 5’-10”	3’-6”	6’-8” x 4’-3”	X	X
P3000-FO	7’-0” x 5’-6”	8’-8” x 6’-3”	3’-6”	6’-8” x 4’-8”	X	X
P3500-FO	7’-0” x 6’-3”	8’-8” x 7’-0”	3’-6”	6’-8” x 5’-5”	X	X

MRL Front & Rear Opening Dimensions

CAPACITY (LBS.)	PLATFORM W X D	HOISTWAY W X D	CLEAR OPENING	CLEAR INSIDE W X D	SSSO DOOR	SSCO DOOR
P2100-FR	6’-0” x 5’-8”	7’-8” x 6’-8 ½”	3’-0”	5’-8” x 4’-4”	X
P2500-FR	7’-0” x 5’-8”	8’-8” x 6’-8 ½”	3’-6”	6’-8” x 4’-4”	X	X
P3000-FR	7’-0” x 5’-11”	8’-8” x 6’-11 ½”	3’-6”	6’-8” x 4’-7”	X	X
P3500-FR	7’-0” x 6’-9”	8’-8” x 7’-9 ½”	3’-6”	6’-8” x 5’-5”	X	X

Hoistway dimensions are minimum clear inside requirements. Shorter installation times can be obtained by increasing these dimensions by up to 2”. For seismic zone 2 and up, add 4” to hoistway width to comply with Code requirements.

Use of 8mm and 10mm ropes for traction elevator was approved by A17.6-2010 effective 1st July 2010.

Pit and Overhead Requirements For Cars With 8’-0 Cab Height

SPEED	P2100, P2500, P3000, P3500
FPM	Pit	O.H.
100*	5’-0”	14’-6”/14'-0"
150*	5’-0”	14-7”/14'-0"
200*	5’-0”	14’-9”/14'-1"
250*	5’-6”	15’-0”/14'-6"
300*	5’-6”	15’-1”/14'-7"
350*	5’-6”	15’-4”/14'-10"

DEM EE can provide not only standard sizes as outlined above but also non-standard or custom sizes. Please consult DEM EE for details.