The most predominant reason for costly elevator service calls is related to elevator hoistway doors. SmarTork™ Elevator Hoistway Door Reel Closer saves money, energy, eliminates noise and increases profits for building owners and elevator supply companies. SmarTork™ spirator's revolutionary design works on door openings up to 60 inches and overcomes wind velocities on elevator hoistway doors by an increase of up to 20% tension at last 2 inches of closing and decreasing tension in opening cycle reducing force and amps to the elevator door operator. Over 1,000,000 cycles (Testing By Columbia Elevator) show no significant deviation from torque and tension ratios.
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