Lesson 1Hydraulic systems: reservoir level, filter inspection/replacement, pressure tests, leak detection and hydraulic oil analysisCovers hydraulic system checks, including reservoir levels, filter inspection or replacement, pressure tests, leak spotting, hose condition, and oil sampling for cleanliness, water, and wear.
Reservoir level and sight glass inspectionFilter differential pressure and changeoutSystem pressure and relief valve testsHose, fitting, and cylinder leak checksHydraulic oil sampling and lab analysisLesson 2Cooling systems: radiator/heat exchanger cleaning, coolant level and quality checks, fan and thermostat operation testsCovers cooling system routines, including radiator and heat exchanger cleaning, coolant levels and quality, hose and clamp checks, and testing fan, pump, and thermostat under normal loads.
Radiator and heat exchanger cleaning stepsCoolant level, quality, and freeze point checksFan, pump, and thermostat functional testsHose, clamp, and fitting leak inspectionRecording cooling system measurementsLesson 3Yaw system: yaw drive gear and brake inspection, encoder and limit switch checks, lubrication and torque checksDetails yaw system maintenance, including drive and brake checks, gear and bearing lubrication, encoder and limit switch tests, cable condition, and torque checks on key fasteners.
Yaw gear, pinion, and bearing inspectionYaw brake pad, disc, and clearance checksLubrication of yaw gears and bearingsEncoder and limit switch functional testsTorque checks on yaw fastenersLesson 4Rotor and blades: visual blade surface inspection, leading/trailing edge checks, lightning protection continuity, bolt torque at hubCovers rotor and blade checks, including close visual surface inspections, leading and trailing edges, lightning protection continuity, hub bolt torque, and defect photos with severity ratings.
Blade surface and laminate visual checksLeading and trailing edge damage checksLightning protection continuity testingHub and blade bolt torque verificationBlade defect classification and reportingLesson 5Drivetrain—main bearing: axial/radial play checks, lubrication sampling, temperature and vibration monitoringDetails main bearing checks, including axial and radial play measurements, lubrication sampling and analysis, temperature and vibration monitoring, linking to alignment, loads, and early damage signs.
Axial and radial play measurement methodsGrease sampling and contamination checksMain bearing temperature monitoringVibration signatures of bearing defectsCriteria for main bearing maintenanceLesson 6Nacelle interior general: structural inspections, housekeeping, vibration sensor mounts, cable routing and tiesDescribes nacelle interior checks, including frame and cover structural inspections, housekeeping, cable routing and ties, vibration sensor mounts, and checks on lighting, fire detection, and safety gear.
Main frame and cover structural inspectionHousekeeping, spills, and debris removalCable routing, clamping, and strain reliefVibration sensor mount and wiring checksNacelle lighting and safety devicesLesson 7Electrical and control cabinets: visual inspection, busbar torque checks, contactor and relay function tests, SCADA alarms review, firmware/configuration verificationDescribes electrical and control cabinet checks, including visuals, busbar and terminal torque, contactor and relay tests, SCADA alarm reviews, and firmware/configuration against standards.
Cabinet cleanliness and visual damage checksBusbar and terminal torque verificationContactor, relay, and breaker function testsSCADA alarms and event log reviewFirmware and configuration validationLesson 8Braking system: brake pad wear measurement, brake hydraulic/pneumatic pressure checks, functional brake testCovers braking system maintenance, including pad wear measurement, hydraulic or pneumatic pressure checks, accumulator condition, functional tests, and documenting stopping distance and response time.
Brake pad wear and rotor surface checksHydraulic or pneumatic pressure testsAccumulator pre‑charge and leak checksEmergency and service brake function testsRecording brake performance resultsLesson 9Tower and access: visual inspection points, corrosion checks, bolts and torque verification, door/lock and grounding checksCovers tower and access checks, including visuals for deformation, corrosion, coating damage, bolt and flange torque, ladder and platform integrity, door/lock function, and grounding tests.
Tower shell and weld visual inspectionCorrosion, coating, and touch‑up actionsFlange bolt torque and tension checksLadders, platforms, and fall arrest checksGrounding and bonding continuity testsLesson 10Pitch system: actuator operation tests, hydraulic/electrical checks, backlash and torque checks, position sensor verificationExplains pitch system maintenance, including actuator tests, hydraulic or electrical checks, backlash and torque verification, position sensor calibration, and reviewing alarms or faults in the controller.
Pitch actuator stroke and speed testsHydraulic or electrical supply checksBacklash, play, and torque verificationPitch position sensor calibration checksPitch fault and alarm history reviewLesson 11Drivetrain—gearbox: oil level and quality tests (viscosity, particle count), leak detection, gear tooth inspection and vibration analysisFocuses on gearbox health checks, including oil level and quality tests, leak detection, breather and filter checks, gear tooth visuals, and vibration analysis for wear, misalignment, and early damage.
Oil level checks and top‑up proceduresOil sampling, viscosity, and particle countsLeak paths, seals, and breather inspectionGear tooth surface and contact pattern checksGearbox vibration trend evaluationLesson 12Drivetrain—generator: insulation resistance (megger) testing, bearing temperature, vibration, electrical output checksCovers generator drivetrain checks, focusing on insulation resistance tests, bearing temperature and vibration trends, electrical output quality, and criteria showing when to clean, tighten, or replace parts.
Insulation resistance (megger) test procedureGenerator bearing temperature limitsVibration measurement points and alarmsVoltage, current, and power quality checksInterpreting generator test results
