Contract Comprehensive, Preventive And Corrective Maintenance, Including The Supply Of Spare Parts For The Different Pumping Systems, Plants, Equipment And An Electrical Substation That Are Part Of The Engineering Plant Of The Tequendama International Center, At An Exhaustable Amount By Lots Defined As Follows: Lot 1 Pumping Systems (Drinking Water, Rain And/Or Black Water And Fire Pumps). Lot 2: Plants, Generators And Electrical Substation. Lot 3: Calibration Of Scales.