PERFORM PREVENTIVE AND CORRECTIVE MAINTENANCE OF THE UPS ELECTRICAL BACKUP SYSTEM OF THE SECRETARIAT OF RISK MANAGEMENT OF EMERGENCIES AND DISASTERS OF THE SPECIAL DISTRICT OF SANTIAGO DE CALI, ASSIGNED TO THE CAUCA RIVER BENCH PLAN PROJECT, WITHIN THE FRAMEWORK OF THE PROJECT CALLED "PREVENTION OF PHYSICAL AND SOCIAL RISKS FOR THE INHABITANTS OF THE AREAS SURROUNDING THE CAUCA RIVER BENCH AND CHARCO AZUL AND EL PONDAJE LAGOONS CALI" and "DEVELOPMENT OF THE RESETTLEMENT AND PROTECTION STRATEGY OF