GTX Industrial and Commercial trolley type electric door operator has been developed by Doorlec Corporation to be used in hazardous locations where flammable vapours, combustible dust, or ignitable fibres or flyings may be present in the air in quantities sufficient to produce an explosion. To be used in conjunction with standard lift overhead doors where no sideroom is available.
Explosion Proof Three Button Control:
Momentary contact type for open, close, stop. Operator 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 AC for user protection, Class II. C.S.A. an U.L. approved.
Adjustable Torque Limiter:
Will protect door and operator in case of obstruction. (Optional at extra cost).
Explosion Proof Limit Switches:
Rotary type with oilite bronze cams and precision micro switches for automatic stopping of door in up and down positions (easily adjustable without tools).
Heavy duty type.
Worm gear reducer, single stage, running in an oil bath, 40:1 ratio, C flange design, cast iron alloy housing. Door speed: 8″ (20cm) per second approx.
Cast aluminium alloy chain driven carriage, slides in dual heavy steel angle tracks, with continuous No.40 push and pull roller chain, for smooth and quiet operation. In addition, a roller spreader is provided to support trolley and prevent chain from rubbing.
Quick Release Door Arm:
Quickly disengages operator from door at floor level (without tools) for manual operation in the event of power failure.
Explosion Proof Motor:
3/4 H.P. (560W), 1 H.P. (746W), 1-1/2 H.P. (1119W) or 2 H.P. (1493W), 120V. or 240V. single phase, 208V., 230V., 416V., 460V. or 550V. three phase. 2 H.P. (1493W) not recommended for single phase motors.
Manual Overload Relay:
For overcurrent and under voltage protection (manual reset).
2-1/2″ (6.25cm) minimum from door’s highest arc of travel.
5’0″ (152cm) plus door height.
Primed with rust-proof primer and spray painted in blue hammertone enamel.