WD34 Service Inspection Report

• Site conducted

  Select

• Turbine Number

• Kirkby Moore Wind Farm

• Client

• Service Type

  6 month

  annual

• Date

  Date

• Authorised Technician

• Competent Technician

• Competent Technician

• Authorised technicians signature that all works have been completed

  Sign

• ALL QUESTIONS ARE PASS/FAIL UNLESS SPECIFIED OTHERWISE!

1. Pre Work checks

• 1a, Are all relevant safety documents in date and present? (COSHH assessments, AWP's, RAMS's and POWRA)?

  Yes

  No

  N/A

• 1b, Are all personnel signed onto the above documentation?

  Yes

  No

  N/A

• 1c, Are all members of the team qualified and fit to climb?

  Yes

  No

  N/A

• 1d, Is all PPE and PFPE in date and fit for use?

  Yes

  No

  N/A

• 1e, Are all lifting bags and accessories in date and fit for use?

  Yes

  No

  N/A

• 1f, Have all statutory inspections been completed and in date on the turbine safety equipment?

  Yes

  No

  N/A

• 1g, Are radios and phones fully charged?

  Yes

  No

  N/A

• 1h, Have you taken control of the turbine?

  Yes

  No

  N/A

• 1i, are calibrated tools being used?

  Yes

  No

  N/A
1j, calibrated tooling

• undefined

  Select Torque Wrench Multimeter Manometer proving unit voltage indicator Hytorc

  • Torque Wrench
  • Multimeter
  • Manometer
  • proving unit
  • voltage indicator
  • Hytorc

• Serial Number

• Calibration date

• Service interval

  6 Month

  Annual

2. Turbine condition.

• 2a, Audible and Visual check of operation of the turbine

  Yes

  No

  N/A

• 2b, Check of access routes

  Yes

  No

  N/A

• 2c, Check of access steps and door

  Yes

  No

  N/A

3. Ground Controller.

• 3a, Change the batteries in the ground processor. The battery box must only be opened when the processor is mounted in the rack and is power supplied. Warning! “Do not open when unpowered Data loss possible”. If the battery box is opened, while the processor is unpowered, the RAM will be reset (production and hour counter, all logs, calibration values and parameters). When a processor is changed you must leave the batteries in the processor.

  Yes

  No

  N/A

• 3c, Check the function of the heating elements in the ground controller.

  Yes

  No

  N/A

• 3d, Check the lamps in the ground controller.

  Yes

  No

  N/A

• 3e, If no data already exists, take down all changed parameters in menu 24.

4. Grounding system cables

• 4a, Check that the connections are properly tightened and that they are undamaged. Pay special attention where the cables are connected to the tower at the ground at the cable loop.

  Yes

  No

  N/A

2. Turbine condition.

• 2a, Audible and Visual check of operation of the turbine

  Yes

  No

  N/A

• 2b, Check of access routes

  Yes

  No

  N/A

• 2c, Check of access steps and door

  Yes

  No

  N/A

3. Ground Controller.

• 3a, Change the batteries in the ground processor. The battery box must only be opened when the processor is mounted in the rack and is power supplied. Warning! “Do not open when unpowered Data loss possible”. If the battery box is opened, while the processor is unpowered, the RAM will be reset (production and hour counter, all logs, calibration values and parameters). When a processor is changed you must leave the batteries in the processor.

  Yes

  No

  N/A

• 3b, Check for loose connections in the ground controller. Special attention must be paid to the connections from the bars to contactors, breakers and generator cables.

  Yes

  No

  N/A

• 3c, Check the function of the heating elements in the ground controller.

  Yes

  No

  N/A

• 3d, Check the lamps in the ground controller.

  Yes

  No

  N/A

• 3e, If no data already exists, take down all changed parameters in menu 24.

4. Grounding system cables

• 4a, Check that the connections are properly tightened and that they are undamaged. Pay special attention where the cables are connected to the tower at the ground at the cable loop.

  Yes

  No

  N/A

5. Electrical function check.

• 5a, Select picture 1 “1:OVERVIEW” and list wind speed.

• 5b, Select picture 6 “6:OVERVIEW” and list ambient temperature.

• 5c, Enter service mode on the computer. Select picture: “11: TEST MENU” Select picture: “11: TEST MENU "In the “11: TEST MENU” picture it is possible to select a test by moving the asterisk “*”. It can be moved by the cursor up and cursor down. A test can also be selected by typing the test number then ENTER. When you are in a test picture: MENU: Returns to TEST MENU”.FUNC: Start test. ESC: Stop test.

• 5d, Select test: “8: Position transmitter voltage test”. Move pitch to -End stop and note value: (0.040V±0.020V ), eventually adjust the value. Move pitch to +End stop and note value: (9.970V ± 0.020V), eventually adjust the value. If this position voltages are not within the tolerance they have to be adjusted to x.xxx ± 0.01V.

• Negative end stop

• Positive end stop

• 5e, Select test: “9: Positive offset test of prop. valve”. Press FUNC to start test. For 6 seconds the control voltage will be 2.000V and the computer measures the pitch velocity. When the measuring is finished, the pitch will move back to 0.0°, and the pitch velocity will be displayed. Every 10th second the computer will perform a new test. List pitch velocity ((0.05°/sec. ± 0.02°/sec.), adjust if necessary.

• (Enter Before/After Adjustment)

• 5f, Select test: “10: Negative offset test of prop. valve”.

• Press FUNC to start test. For 6 seconds the control voltage will be - 2.000V and the computer measures the pitch velocity. When the measuring is finished, the pitch will move back to 10.0°, and the pitch velocity will be displayed. Every 10th second the computer will perform a new test. List pitch velocity, (-0.05°/sec. ± 0.02°/sec.). Adjust if necessary.

• (Enter Before/After Adjustment)

• 5g, Select test: “11: Positive flow test of prop. valve”. Press FUNC to start test. For 6 seconds the control voltage will be 9.000V, and the computer measures the pitch velocity. When the measuring is finished, the pitch will move back to 0.0°, and the pitch velocity will be displayed. Every 10th second the computer will perform a new test. List pitch velocity, (8.5°/sec. ± 0.5°/sec.), adjust if necessary.

• (Enter Before/After Adjustment)

• 5h, Select test: “12: Negative flow test of prop. valve”. Press FUNC to start test. For 6 seconds the control voltage will be -9.000V, and the computer measures the pitch velocity. When the measuring is finished, the pitch will move back to 80.0°, and the pitch velocity will be displayed. Every 10th second the computer will perform a new test. List pitch velocity, (-9.5°/sec. ± 0.5°/sec.), adjust if necessary.

• (Enter Before/After Adjustment)

• 5i, Select test: “13: Sine test of pitch control”. Press FUNC to start test. The pitch reference follows a sine function from -3.0° to 83.0° with a cycle time of 60 seconds. Check that the actual pitch (Pitch-Act) follows the reference pitch. Reference angle ok?

• 5k, Select test: “16: Capacitor battery test”. Wait for 60 seconds to be sure that the capacitors are discharged before connecting the capacitors. Connect capacitors and list currents displayed. The current through the capacitor depends on the line voltage. The current thru a 10 kWAr capacitor can be calculated as follows: 690V : I = 0.0122 • U ±2% 480V : I = 0.0250 • U ±2% The current thru a 12,5 kWAr capacitor can be calculated as follows: 690V : I = 0.0152 • U ±2% 480V : I = 0.0313 • U ±2% If the voltage in the three lines is the same, the currents must be the same. 690v system = 70-75A

• Capacitor 1 current L1/L2/L3

• Capacitor 2 current L1/L2/L3

• Capacitor 1+2 current L1/L2/L3

• 5l, Select test: “18: Yaw turbine upwind”. Yaw the turbine manually upwind using YAW CW, YAW CCW, YAW STOP.

• 5m, Select test: “19: Sine test of speed control”. Press FUNC to start test. The speed reference of the generator follows a sine function from 200 RPM to 1000 RPM with a cycle time of 60 seconds. Check that the actual speed (Gen.RPM, Act) follows the reference speed (Gen.RPM, Ref).

• Sine speed ok?

  Yes

  No

  N/A

• 5n, Select test: “20: Step test of speed control”. Press FUNC to start test. The generator speed reference moves in steps: 250 RPM - 500 RPM - 750 RPM - 1000 RPM 750 RPM - 500 RPM etc. The value will change every 30 second. Check that the actual speed (Gen.RPM, Act) follows the reference speed (Gen.RPM,Ref).

• Step Speed ok?

  Yes

  No

  N/A

• 5o, Select test: “21: Test of generator overspeed”. Press FUNC to start test. List the alarm RPM for the generator speed. ( 1100 ± 20 RPM ) The computer waits 30 seconds until the generator speed has reached 500 RPM. During the next minute the reference speed is increased from 500 RPM to 1100 RPM.

• record speed in RPM (generator)

• 5p, Select test: “22. Test of VOG”. Press FUNC to start test. The computer waits 30 seconds until the generator speed has reached 500 RPM. During the next minute the reference speed is increased from 500 RPM to 1100 RPM. List the alarm RPM, where the VOG (Vestas overspeed guard) disconnects the emergency circuit. (41,5 ± 1 RPM)

• Record Rotor RPM

• 5q, Return to the picture “1: OVERVIEW”. Check that it is not possible to reset the errors and start up the turbine as the VOG can only be reset by a power down. Disconnect auxiliary supply (F32) to reset VOG. Connect auxiliary supply (F32).

• 5r, Select picture: “1A: 10 sec. Max”. Reset 10 sec. Max counters with FUNC and ENTER.

  Yes

  No

  N/A

• 5s, Select picture “6A: Max. temperature”. Check the max. temperature values. Note the max. value of Hydraulic:

• 5t, Reset. “Max. temperature” with FUNC. and ENTER.

  Yes

  No

  N/A

• 5u, Select picture: “5.1 Overview”. Check that the VDF system mode is set to Full - > Recycle. If the mode is not Full - > Recycle, change it by pressing FUNC and selecting Full - > Recycle with 5 and ENTER.

  Yes

  No

  N/A

• Service interval

  6 Month

  Annual

6. Tower / ladder protection.

• 6e, Inspect the anchor point for the scaffold hook wire in top and bottom. Inspect fittings to find cracks and deformations. Check all bolt connections.

  Yes

  No

  N/A

• 6f, Inspect the wires, shackles and shackle lock. Inspect the wire to find defects/failures and deformations. The wire must be replaced if there is pitting on the wire (to be written in the report). Check the wire thimble and wire lock for breaks. Check the shackles and shackle lock for breaks and deformations.

  Yes

  No

  N/A

• 6g, Inspect the wire guide on the ladder.

  Yes

  No

  N/A

• Check that the wire guide fits properly and keeps the wire in place.

  Yes

  No

  N/A

• Inspect all bolt connections.

  Yes

  No

  N/A

8. Hoisting equipment.

• 8a, Inspect the hoisting wire for broken wires or cracks, work is to stop and the service manager informed.

  Yes

  No

  N/A

• 8b, Inspect the ferrule crimps-joining of the hoisting wire in the hook end. The joining can be displaced if the wire is in the top of the snatch block, work is to stop and the service manager informed.

  Yes

  No

  N/A

• 8c, Check anchor point of crane gallows and check the other bolts in the crane gallows.

  Yes

  No

  N/A

• 8d, Check the snatch block and its suspension.

  Yes

  No

  N/A

6. Tower / ladder protection.

• 6a, Check the foundation bolts by random sample and casting of foundation of tower (no water penetration).

  Yes

  No

  N/A

• 6b, Check the bolts in the flange connections.

  Yes

  No

  N/A

• 6c, Check for loose bolts on ladders and platforms.

  Yes

  No

  N/A

• 6d, Check lighting fixture/emergency lighting in the tower.

  Yes

  No

  N/A

• 6e, Inspect the anchor point for the scaffold hook wire in top and bottom. Inspect fittings to find cracks and deformations. Check all bolt connections.

  Yes

  No

  N/A

• 6f, Inspect the wires, shackles and shackle lock. Inspect the wire to find defects/failures and deformations. The wire must be replaced if there is pitting on the wire (to be written in the report). Check the wire thimble and wire lock for breaks. Check the shackles and shackle lock for breaks and deformations.

  Yes

  No

  N/A

• 6g, Inspect the wire guide on the ladder.

  Yes

  No

  N/A

• Check that the wire guide fits properly and keeps the wire in place.

  Yes

  No

  N/A

• Inspect all bolt connections.

  Yes

  No

  N/A

7. Surface Treatment

• 7a, Check the surface protection of the turbine.

  Yes

  No

  N/A

8. Hoisting equipment.

• 8a, Inspect the hoisting wire for broken wires or cracks, work is to stop and the service manager informed.

  Yes

  No

  N/A

• 8b, Inspect the ferrule crimps-joining of the hoisting wire in the hook end. The joining can be displaced if the wire is in the top of the snatch block, work is to stop and the service manager informed.

  Yes

  No

  N/A

• 8c, Check anchor point of crane gallows and check the other bolts in the crane gallows.

  Yes

  No

  N/A

• 8d, Check the snatch block and its suspension.

  Yes

  No

  N/A

9. Visual inspection of cables.

• Warning! The black rubber cables carry HIGH VOLTAGE.

• Set the turbine in PAUSE and disconnect the supply voltage to the turbine by turning the circuit breaker to position 0 and wait for 60 seconds.

• 9a, Examine all the cables for damage and wear. If cables are seriously damaged they must be replaced. Try to avoid beginning wear on the cables either by removing the cause of the wear or by rearranging the cables. Pay special attention to the signal cables in the cable loop. If there is grease or oil on the cables it must be removed.

  Yes

  No

  N/A

10. Cable strips.

• 10a, All missing cable strips (cable binders) must be replaced. Cable strips have to be placed with a distance of approx. 1 ft. Special attention must be paid to the cable strips in the cable loop where they are very important.

  Yes

  No

  N/A

• Service interval

  6 Month

  Annual

11. Rotational greasing

• 11a, Lubricate the main bearings: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 11b, Lubricate the generator. Let the generator rotate slowly while lubricating. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 11c, Check the generator bearings for abnormal noise during rotational greasing.

  Yes

  No

  N/A

• 11d, Check gear for unnecessary noise rotational greasing.

  Yes

  No

  N/A

12. Yaw Gear

• 12b, Check oil level on yaw gear. (Dismount sight glass and the oil must be at the edge). (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 12c, Check yaw gear/yaw motor for leakage.

  Yes

  No

  N/A

13. Yaw Bedding

• 13c, Lubricate the tooth ring with a thin layer of grease. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 13d, Check / clean outer grease tray on tower.

  Yes

  No

  N/A

15. main bearing and shaft

• 15e, The v-rings must not be dry (lubricate with SKF LGWM 1).

  Yes

  No

  N/A

11. rotational greasing

• 11a, Lubricate the main bearings: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 11b, Lubricate the generator. Let the generator rotate slowly while lubricating. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 11c, Check the generator bearings for abnormal noise during rotational greasing.

  Yes

  No

  N/A

• 11d, Check gear for unnecessary noise rotational greasing.

  Yes

  No

  N/A

12. Yaw Gear

• 12a, Check the bolt torque between yaw gear and bed frame.

  Yes

  No

  N/A

• 12b, Check oil level on yaw gear. (Dismount sight glass and the oil must be at the edge). (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 12c, Check yaw gear/yaw motor for leakage.

  Yes

  No

  N/A

• 12d, check yaw gear for clearance and uneven operation. Yaw the turbine forward and back.

  Yes

  No

  N/A

• 12e, Check yaw control and fastening of gearwheel on yaw control.

  Yes

  No

  N/A

13. Yaw Bedding

• 13a, Check meshing between yaw gear and yaw ring.

  Yes

  No

  N/A

• 13b, Lubricate the tooth ring with a thin layer of grease. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 13c, Check / clean outer grease tray on tower.

  Yes

  No

  N/A

14. Yaw Brake

• 14a, Check brake ring for unevenness and cracks.

  Yes

  No

  N/A

• 14b, Check brake calipers for leakage and cracks.

  Yes

  No

  N/A

• 14c, Check bracket for brake calipers for cracks.

  Yes

  No

  N/A

• 14d, Check tightening of brake calipers.

  Yes

  No

  N/A

• 14e, Check various bolt connections visually.

  Yes

  No

  N/A

• 14f, Check thickness of brake lining. (Min. 2 mm).

  Yes

  No

  N/A

• 14g, Check clearance in guide bushes for brake pads.

  Yes

  No

  N/A

15. main bearing and shaft

• 15a, Check the bolt connection between main shaft and blade hub for rust and loose bolts visually.

  Yes

  No

  N/A

• 15b, Check the bolt connection between the front and rear main bearing housing for rust and loose bolt visually.

  Yes

  No

  N/A

• 15c, Check the axial clearance in the rear main bearing by means of a dial gauge (pitch forward and back). Max. clearance: 0,70 mm

  Yes

  No

  N/A

• Clearance in mm

• 15d, Check v-rings for cracks and abnormal leakage. If necessary replace.

  Yes

  No

  N/A

• 15e, The v-rings must not be dry (lubricate with SKF LGWM 1).

  Yes

  No

  N/A

• Service interval

  6 Month

  Annual

16. Top Controller.

• 16a, Change the batteries in the ground processor. The battery box must only be opened when the processor is mounted in the rack and is power supplied. Warning! “Do not open when unpowered Data loss possible”. If the battery box is opened, while the processor is unpowered, the RAM will be reset (production and hour counter, all logs, calibration values and parameters). When a processor is changed you must leave the batteries in the processor.

  Yes

  No

  N/A

• 16c, Check the top controller suspension.

  Yes

  No

  N/A

• 16d, Check the function of the heating elements in the top controller.

  Yes

  No

  N/A

18. Gearbox and gear oil system

• 18a, Check the oil level in the gear after the gearbox has been stopped for min. 2 minutes. The oil level must be at the measuring mark. Refill if necessary.

  Yes

  No

  N/A

• 18b, Check gear for leakage.

  Yes

  No

  N/A

• 18c, Check gear for unnecessary noise during operation.

  Yes

  No

  N/A

• 18g, Check all fittings, various components and pump for leakage. Be especially aware of the electrical pump. If there is a leaking shaft sealing oil will run out of the thread holes beside the two fittings screwed in the pump.

  Yes

  No

  N/A

16. Top Controller.

• 16a, Change the batteries in the ground processor. The battery box must only be opened when the processor is mounted in the rack and is power supplied. Warning! “Do not open when unpowered Data loss possible”. If the battery box is opened, while the processor is unpowered, the RAM will be reset (production and hour counter, all logs, calibration values and parameters). When a processor is changed you must leave the batteries in the processor.

  Yes

  No

  N/A

• 16b, check for lose connections in the top controller

  Yes

  No

  N/A

• 16c, Check the top controller suspension.

  Yes

  No

  N/A

• 16d, Check the function of the heating elements in the top controller.

  Yes

  No

  N/A

17. Generator

• 17a, Check the torque of the cables in the terminal box of the generator and check that they are not damaged.

  Yes

  No

  N/A

• 17b, Check the generator bearings for abnormal noise during operation.

  Yes

  No

  N/A

• 17c, Check placing of air intake.

  Yes

  No

  N/A

• 17d, Lubricate the generator. Let the generator rotate slowly while lubricating. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

18. Gearbox and gear oil system

• 18a, Check the oil level in the gear after the gearbox has been stopped for min. 2 minutes. The oil level must be at the measuring mark. Refill if necessary.

  Yes

  No

  N/A

• 18b, Check gear for leakage.

  Yes

  No

  N/A

• 18c, Take a 100 ml oil sample from the gear, mark the bottle with oil type, turbine no. and date.

  Yes

  No

  N/A

• 18d, Check the gearbox if there is abnormal noise from the gearbox, if there are chips in the oil, or if the oil temperature is unusually high. Use “inspection scheme for 3 steps gearbox” when checking the gearbox.

  Yes

  No

  N/A

• 18e, Oil change on gear. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 18f, Check all fittings, various components and pump for leakage. Be especially aware of the electrical pump. If there is a leaking shaft sealing oil will run out of the thread holes beside the two fittings screwed in the pump.

  Yes

  No

  N/A

• 18g, Check the cooling ribs of the oil cooler for dirt. Clean if necessary

  Yes

  No

  N/A

• 18h, Check the function of the oil cooler by switching the pump “ON” and check if there is flow. NB The oil temperature must be min. 25° C.

  Yes

  No

  N/A

• 18i, Check the function of the ventilator by turning thermostat B333 down under ambient temperature and check that the ventilator motor starts. Check for abnormal noise (lose ventilator blade). Turn the thermostat back again.

  Yes

  No

  N/A

• 18j, Check insulation in exhaust duct.

  Yes

  No

  N/A

• 18k, Replace gear oil filter

  Yes

  No

  N/A

Brake system

• Service interval

  6 Month

  Annual

21. Coupling

• 21a, Check coupling for cracks, unevenness and sediment.

  Yes

  No

  N/A

• 21b, Replacement of coupling element (every 2 years or when needed)

  Yes

  No

  N/A

• 21c, check tightness of bolts in the coupling

  Yes

  No

  N/A

• What brake system is fitted

  Old Type

  New Type

19. Brake (old Type)

• 19a, Check the thickness of the brake lining. (min. 5 mm).

  Yes

  No

  N/A

• Lining thickness

• 19b, Check that the clearance is identical on both sides between brake blocks and brake disk. Adjust screw if necessary.

  Yes

  No

  N/A

• 19c, Check brake caliper for leakage, cracked rubber sleeves and the mobility of the pistons.

  Yes

  No

  N/A

• 19d, Check the preload of the discs springs. There must be 13 mm space between bushing and spring box.

  Yes

  No

  N/A

• Space

• 19e, Visual check of brake disk.

  Yes

  No

  N/A

20. Brake (new type)

• 20a, Check the thickness of the brake lining. (Min. 3 mm).

  Yes

  No

  N/A

• 20b, Check brake caliper for leakage, worn rubber sleeves and the mobility of the pistons.

  Yes

  No

  N/A

• 20c, Visual check of brake disk.

  Yes

  No

  N/A

• 20d, adjust gap between the disk and pads if required

  Yes

  No

  N/A

21. Coupling

• 21a, Check coupling for cracks, unevenness and sediment.

  Yes

  No

  N/A

• 21b, Replacement of coupling element (every 2 years or when needed)

  Yes

  No

  N/A

• 21c, check tightness of bolts in the coupling

  Yes

  No

  N/A

22. Torque arm system

• 22a, Check Allen bolts in torque arm system, and brackets on the gearbox.

  Yes

  No

  N/A

• 22b, Check clearance, cracks, and wear in torque arm system .

  Yes

  No

  N/A

• 22c, Check rubber dampers for cracks visually.

  Yes

  No

  N/A

• 22d, Check the alignment of gear/generator visually.

  Yes

  No

  N/A

• Service interval

  6 Month

  Annual

23. Hydraulics.

• 23a, Check the hydraulic oil with blades in 85 degree position, with emergency pitch rams fully pitched out, oil should be 6 cm from the bottom of the sight glass. Refill if necessary.

  Yes

  No

  N/A

• 23b, Check that there is no leakage on the hydraulic system.

  Yes

  No

  N/A

• 23d, Replacement of return filter.

  Yes

  No

  N/A

• 23e, Replacement of pressure filter:

  Yes

  No

  N/A

• 23f, Change the hydraulic oil every 5. year or on the service department’s request.

  Yes

  No

  N/A

• 23g, Check of precharge pressure in pitch accumulator: Connect the digital pressure gauge on test nipple 77. Relieve slowly the pressure in the pitch accumulator (pos 39) by opening needle valve (pos 24). Observe when the pressure immediately falls to 0 bar. Correct pressure is 60 bar ± 4 bar at a temperature of 20°C. At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (Enter Before/After charge pressure)

• 23h, Check of precharge pressure in emergency accumulator: Connect the digital pressure gauge on test nipple 78. Relieve slowly the pressure in the emergency accumulator (pos 40) by opening needle valve (pos 23). Observe when the pressure immediately falls to 0 bar. Correct pressure is 60 bar ± 4 bar at a temperature of 20°C. At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (enter before/after charge pressure)

• 23i, Check of yaw brake accumulator: Connect the digital pressure gauge on test nipple 97. Open slowly the bleeding screw on one of the yaw brake calipers (drain down I a canister). Observe when the pressure immediately falls to 0 bar. Correct pressure is 80 bar ± 4 bar at a temperature of 20°C.At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (enter before/after charge pressure)

• The following instructions apply to turbines with VMP controller

• 23j, Check of start/stop pressure: Connect the digital pressure gauge on test nipple 78. Check that the pump starts and stops correctly by opening and closing needle valve pos 23. Start pressure = 100 bar. Stop pressure = 115 bar.

  Yes

  No

  N/A

• (Enter Start Pressure/Stop Pressure)

• 23k, Check of PrsBrk S201: Connect the digital pressure gauge on test nipple 78. Switch the oil pump OFF, thereafter open the needle valve (pos. 23) slowly. In picture “14A: TOP INPUT” PrsBrk S201 must change from + to - when the pressure is on 80 bar ± 3 bar. (Enter pressure before/after adjustment)

  Yes

  No

  N/A

• 23l, Check of PrsAcc S202: Connect the digital pressure gauge on test nipple 78. Open the needle valve (pos. 23) slowly. Picture “14A: TOP INPUT” PrsAcc S202 must change from + to - when the pressure is on 70 bar ± 3 bar. (Enter before/after adjustment)

  Yes

  No

  N/A

• 23m, Check of max pumping pressure: Connect the digital pressure gauge on test nipple 78. Switch the pump ON and check that the pressure on the pressure gauge rises to 120 bar and stabilizes. Stop the pump.

  Yes

  No

  N/A

• (Enter before/after adjustment)

23. Hydraulics.

• 23a, Check the hydraulic oil with blades in 85 degree position, with emergency pitch rams fully pitched out, oil should be 6 cm from the bottom of the sight glass. Refill if necessary.

  Yes

  No

  N/A

• 23b, Check that there is no leakage on the hydraulic system.

  Yes

  No

  N/A

• 23c, Replacement of the air filter must take place every 5. year or when the air filter shows signs of clogging.

  Yes

  No

  N/A

• 23d, Replacement of return filter.

  Yes

  No

  N/A

• 23e, Replacement of pressure filter:

  Yes

  No

  N/A

• 23f, Change the hydraulic oil every 5. year or on the service department’s request.

  Yes

  No

  N/A

• 23g, Check of precharge pressure in pitch accumulator: Connect the digital pressure gauge on test nipple 77. Relieve slowly the pressure in the pitch accumulator (pos 39) by opening needle valve (pos 24). Observe when the pressure immediately falls to 0 bar. Correct pressure is 60 bar ± 4 bar at a temperature of 20°C. At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (Enter Before/After charge pressure)

• 23h, Check of precharge pressure in emergency accumulator: Connect the digital pressure gauge on test nipple 78. Relieve slowly the pressure in the emergency accumulator (pos 40) by opening needle valve (pos 23). Observe when the pressure immediately falls to 0 bar. Correct pressure is 60 bar ± 4 bar at a temperature of 20°C. At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (enter before/after charge pressure)

• 23i, Check of yaw brake accumulator: Connect the digital pressure gauge on test nipple 97. Open slowly the bleeding screw on one of the yaw brake calipers (drain down I a canister). Observe when the pressure immediately falls to 0 bar. Correct pressure is 80 bar ± 4 bar at a temperature of 20°C.At other temperatures please see WI941918. Refill if necessary.

  Yes

  No

  N/A

• (enter before/after charge pressure)

• The following instructions apply to turbines with VMP controller

• 23j, Check of start/stop pressure: Connect the digital pressure gauge on test nipple 78. Check that the pump starts and stops correctly by opening and closing needle valve pos 23. Start pressure = 100 bar. Stop pressure = 115 bar.

  Yes

  No

  N/A

• (Enter Start Pressure/Stop Pressure)

• 23k, Check of PrsBrk S201: Connect the digital pressure gauge on test nipple 78. Switch the oil pump OFF, thereafter open the needle valve (pos. 23) slowly. In picture “14A: TOP INPUT” PrsBrk S201 must change from + to - when the pressure is on 80 bar ± 3 bar. (Enter pressure before/after adjustment)

  Yes

  No

  N/A

• 23l, Check of PrsAcc S202: Connect the digital pressure gauge on test nipple 78. Open the needle valve (pos. 23) slowly. Picture “14A: TOP INPUT” PrsAcc S202 must change from + to - when the pressure is on 70 bar ± 3 bar. (Enter before/after adjustment)

  Yes

  No

  N/A

• 23m, Check of max pumping pressure: Connect the digital pressure gauge on test nipple 78. Switch the pump ON and check that the pressure on the pressure gauge rises to 120 bar and stabilizes. Stop the pump.

  Yes

  No

  N/A

• (Enter before/after adjustment)

24. Nose Cone

• 24a, Check Nose cone for cracks

  Yes

  No

  N/A

• 24b, check all bolts in the fiberglass are present and tight

  Yes

  No

  N/A

• 24c, check locking device is in a serviceable condition

  Yes

  No

  N/A

• 24d, check locking wire and fixings are in a serviceable condition

  Yes

  No

  N/A

• 24e, check nose cone hinge and fixings are in a serviceable condition

  Yes

  No

  N/A

• 24f, check the r-clip at the hinge is in a serviceable condition

  Yes

  No

  N/A

25. Blade and pitch mechanism

• Service interval

  6 month

  annual

• 25a, Check blades for cracks

  Yes

  No

  N/A

• are blades damage free?

  Yes

  No

  N/A

• 25b, Is blade 1 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25c, Is blade 2 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25d, Is blade 3 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25g, Check bolts and metal surfaces for rust and degradation.

  Yes

  No

  N/A

• 25h, Check hub for surface cracks (contact O&M service manager if cracks are found).

  Yes

  No

  N/A

• 25i, Check blade bearings for smooth operation and clearance, if clearances are present, measure and record findings.

  Yes

  No

  N/A

• 25j, Lubricate blade bearings while blades are in sine test (menu 11.13) (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25k, Check the pitch angle on the blade bearings with pitch angle finder.

  Yes

  No

  N/A

• 25m, Lubricate the link bearings: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25p, Check the clearance in the pitch bearing by dismounting the lubricating nipple and measure bias through the nipple hole. Max. clearance 0.325 mm. Min. clearance 0.225 mm.

  Yes

  No

  N/A

• 25g, Lubricate the pitch bearing. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25h, Check the slide block for clearance around the rotation shaft visually. Turn 90° or replace if necessary. Max. clearance: 0.25 mm.

  Yes

  No

  N/A

• 25s, Check center tube for damage.

  Yes

  No

  N/A

• 25t, Lubricate center tube and rotation fuse: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25u, Check pitch/emergency position cylinders, hydraulic tube and hoses for leakage.

  Yes

  No

  N/A

• 25v, Check the piston rods for damage.

  Yes

  No

  N/A

• 25w, check the clearance between the yoke on the pitch cylinder and the end flanges on the emergency position cylinders. The clearance must be identical.

  Yes

  No

  N/A

• 25x, Check the tightening of the locking screws in the end flanges and the yoke. If they are loose, dismount them, lock with Loctite and retighten.

  Yes

  No

  N/A

• 25a, Check blades for cracks

  Yes

  No

  N/A

• are blades damage free?

  Yes

  No

  N/A

• 25b, Is blade 1 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25c, Is blade 2 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25d, Is blade 3 free from damage and cracks?

  Yes

  No

  N/A

• Damage:

• Damage:

  Media

• 25e, are blade bearing seals free from damaged or showing signs of leakage.

  Yes

  No

  N/A

• Which Blade seals are damaged or leaking?

  Select Blade 1 inner Blade 1 outer Blade 2 inner Blade 2 outer Blade 3 inner Blade 3 outer

  • Blade 1 inner
  • Blade 1 outer
  • Blade 2 inner
  • Blade 2 outer
  • Blade 3 inner
  • Blade 3 outer

• Which Blade seals have been replaced?

  Select Blade 1 inner Blade 1 outer Blade 2 inner Blade 2 outer Blade 3 inner Blade 3 outer

  • Blade 1 inner
  • Blade 1 outer
  • Blade 2 inner
  • Blade 2 outer
  • Blade 3 inner
  • Blade 3 outer

• 25f, Check Blade - bearing and bearing - hub torque

  Yes

  No

  N/A

• 25g, Check bolts and metal surfaces for rust and degradation.

  Yes

  No

  N/A

• 25h, Check hub for surface cracks (contact O&M service manager if cracks are found).

  Yes

  No

  N/A

• 25i, Check blade bearings for smooth operation and clearance, if clearances are present, measure and record findings.

  Yes

  No

  N/A

• 25j, Lubricate blade bearings while blades are in sine test (menu 11.13) (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25k, Check the pitch angle on the blade bearings with pitch angle finder.

  Yes

  No

  N/A

• 25l, Check the clearance in the link bearings by pitching a little forward and back.

  Yes

  No

  N/A

• 25m, Lubricate the link bearings: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25n, Check bolts in the Turnbuckle

  Yes

  No

  N/A

• 25o, Check bolts/locking device at slide ring.

  Yes

  No

  N/A

• 25p, Check the clearance in the pitch bearing by dismounting the lubricating nipple and measure bias through the nipple hole. Max. clearance 0.325 mm. Min. clearance 0.225 mm.

  Yes

  No

  N/A

• 25q, Lubricate the pitch bearing. (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25r, Check the slide block for clearance around the rotation shaft visually. Turn 90° or replace if necessary. Max. clearance: 0.25 mm.

  Yes

  No

  N/A

• 25s, Check center tube for damage.

  Yes

  No

  N/A

• 25t, Lubricate center tube and rotation fuse: (use WD34,GB lubrication chart document no 945262_a)

  Yes

  No

  N/A

• 25u, Check pitch/emergency position cylinders, hydraulic tube and hoses for leakage.

  Yes

  No

  N/A

• 25v, Check the piston rods for damage.

  Yes

  No

  N/A

• 25w, check the clearance between the yoke on the pitch cylinder and the end flanges on the emergency position cylinders. The clearance must be identical.

  Yes

  No

  N/A

• 25x, Check the tightening of the locking screws in the end flanges and the yoke. If they are loose, dismount them, lock with Loctite and retighten.

  Yes

  No

  N/A

26. Wind vane and Anemometer

• 26a, Check that the vane turns easily and without problems.

  Yes

  No

  N/A

• 26b, Check that all cups on the anemometer are in order.

  Yes

  No

  N/A

• 26c, Check that the anemometer turns easily and without problems.

  Yes

  No

  N/A

• 26d, Visual check of fittings for wind vane/anemometer.

  Yes

  No

  N/A

• 26e, Check heating element on wind vane and anemometer if fitted.

  Yes

  No

  N/A

• 26f, Cleaning of the nacelle

  Yes

  No

  N/A

• 26f, Cleaning of the yaw section, tower and towerbase

  Yes

  No

  N/A