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OPERATION - GROUP CONTROL FOR TWO (2) CARS ( DUPLEX EAST <br />ELEVATORS ) <br /> <br />The building shall be divided into three (3) zones with one car assigned to the lobby zone <br />and the other car assigned to the top zone. Each car shall park in its assigned zone when <br />there are no unanswered calls. <br /> <br />The lobby zone shall include the lobby, basements and adjacent floors above the lobby. The <br />remainder of the floors shall be divided between the top zone and the middle zone. Either <br />car may answer calls in the middle zone but neither ear shall park in that zone. <br /> <br />Response to hall calls shall be achieved by the dispatching software. It dispatches cars by <br />computing response for each registered hall call. The computation of each call shall be <br />based on service to previously assigned car and hall calls, car load, direction of travel, door <br />and car motion slants, coincidence of car and hall calls, etc. <br /> <br />Computations for each hall call are repeated several times a second and the hall call <br />assignment might chang ifa more suitable car is found. <br /> <br />The dispatching soRware shall continuously evaluate the efficiency of its dispatching and <br />shall va~ the value to optimize dispatching efficiency during peak demands. <br /> <br />A car arriving at a floor to park shall not open its doors. Cars shall open their doors only <br />when stopping in response to a car or hall call. <br /> <br />A car without registered car calls, arriving at a floor where both up and down hall calls are <br />registered shall initially respond to the hall call in the dire~on that the car was traveling. If <br />no car call or hall call is registered for further travel in that direction, the car shall close its <br />doors and immediately reopen them in response to the hall call in the opposite direction. <br />Direction lanterns, if furnished, shall indicate the change of direction when the doors reopen. <br /> <br />Direction lanterns, as applicable, shall indicate the change of direction when the doors <br />reopen. <br /> <br />If for any reason the doors are prevented from closing and the car is unable to respond to a <br />call, it shall lose its zone assignment and the call shall be transferred to the other cm. <br /> <br />When a car is filled lo a predetermined load setting, it shall no longer stop for hall calls. <br /> <br />When thc Independent Service switch in the car operating panel is actuated, that elevaWr <br />shall be disconnected from the hall buttons and operate independently from car buttons only. <br /> <br />Page 3 <br /> <br /> <br />