Model RDO is a newly developed, electric door operator with compact, cylindrical, state-of-the-art design, suitable for rolling curtain doors, rolling grilles and rolling rubber doors. Universal mounting right or left, can be installed horizontally in front of door, curtain or grille, eliminating the need for any sideroom. Ideally suited for installation in underground mine tunnels, subway stations, shopping malls, etc., because of its unique concept and noiseless operation.
Three Button Control:
Momentary contact type for open, close, stop. May be stopped in any position and door moved up or down from that position. Close button can be wired for constant pressure when specified. Control circuit: 24V. A.C. for user’s protection, Class II.
Limit Switches:
Rotary type, friction free, oilite bronze cams and precision micro switches, for automatic stopping of door in open or close positions. Easily adjustable externally without tools.
Reversing Contactor:
Heavy duty type.
Reduction:
Planetary gear reducer 40:1 ratio, lubricated and sealed for life. Cast iron alloy housing 1″ (2.54cm) output shaft. Door speed: 8″ (20cm) per second approx.
Motor:
3/4 H.P. (560W), 110V. or 220V. single phase, 1 H.P. (746W) 208V., 460V., 550V three phase.
Manual Overload Relay:
For overcurrent and under voltage protection. (Manual reset).
Brake:
Disc type to prevent door from coasting and locking it in any position.
Chain Hoist:
Equipped with a built-in disconnect device which allows a person to open or close door by hand, from the floor, in the event of power failure, without having to remove the drive roller chain.
Sideroom Required:
See key plan page 16. For position 1 and 3: not required. For position 2 and 4: 21″ (53cm).
Finish:
Primed with rust-proof primer and spray painted in blue hammertone baked enamel.
Leader in door and gate operator
