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9902900050 Bi-Annual Preventive And/Or Corrective Maintenance Service (Two Per Generator), With Replacement Of Parts For Groups Of 8 (Eight) Power Generators.: Estimated Preventive Maintenance Services: Diesel Engine: Check For Leaks; Check The Radiator Cap Seal And, If Necessary, Replace It; Check And Top Up Water, Additive And Change Levels; Check And Top Up Oil Levels And Change; Check The Tension And Condition Of The Belts And Replace Them; Check Hoses And Fixing Clamps And Replace; Check And Make Corrections To The Engine Acceleration And Stopping System; Check The Starter Motor And Replace It; Check The Condition Of The Radiator Core And Replace It; Testing Control Instruments; Test And Adjust The Preheating System. Alternator: Check Voltage Regulator; Check Electrical And Electronic Components, As Well As Connections; Replace Defective Brushes; Lubricate Bearings; Lubricate Bearings. Battery: Check Battery Attachment And Cable Connections And Replace; Complete Water Level; Measure Temperature Of Elements; Measure Electrolyte Density; Measure Voltage Per Element; Clean Terminals And Connections. Power Supply, Control, Protection And Synchronization Board: Retighten Connections; Replace Blown Fuses; Replace Burnt Light Bulbs; Check The Performance Of The Relays And Sensors And Replace Them; Correct Timing Panel Performance. Operation Tests: Put The Group Into Operation, With At Least 50% Load, For 30 Minutes Or More, Checking And Noting: Oil Pressure, Block Temperature, Frequency, Generator Voltage, Generator Current; Simulate Network Failure With The Equipment On Automatic And Note: Group Entry Time, Transfer Time; Simulate Network Return And Note: Transfer/Supervision Time, Cooling Time; Record Unit Work Hours; Check Pump And Fan Inlet

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