ONE LAY IN ONE HOIST ROPE ON THE OTIS ELEVATOR SERPARATED AND BECAME ENTANGLED IN A ROPE GUARD. THIS CAUSED THE ELEVATOR TO STOP BEFORE REACHING THE BOTTOM. NO PERSONS WERE RIDING THE ELEVATOR. ALL ELEVATOR HOIST ROPES WERE REPLACED BY KONE ELEVATOR PERSONNEL. KONE ELEVATOR PERSONNEL PERFORMANCE TESTED THE ELEVATOR AND FOUND IT TO BE OPERATING PROPERLY.