12.0 Troubleshooting |
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| necessary |
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Parking brake does not | 1. | Control fault | 1. | Clear fault |
release | 2. | Loss of power | 2. | Check grid connection |
| 3. Wiring faulty | 3. | Check leads, connectors | |
| 4. | Solenoid faulty | 4. | Disassemble and check |
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| solenoid |
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Dynamic brake does | 1. | Electrical component | 1. | Check dynamic brake panel, |
not engage |
| failure |
| connections, capacitors and |
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| contractors and fuses |
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Generator not turning | 1. | Transmission failure | 1. | Disassemble and overhaul |
(with rotor rotating) |
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| transmission |
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Generator not | 1. Electrical connections faulty | 1. | Inspect and test connections | |
producing power | 2. | Insulation problem | 2. Meg generator | |
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Gearbox noise | 1. | Loose machine fasteners | 1. | Check and tighten all fasteners |
| 2. | Low oil level | 2. | Check level, add oil, determine |
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| cause of leak and call AOC |
Excessive blade noise | 1. | Insect or ice | 1. | Wash blades |
| 2. | Cuts or scratches in blades | 2. | Repair cuts |
| 3. | Loose tip brake parts | 3. | Check tip brakes |
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Excessive twist in twist | 1. | Too many machine revs. | 1. | Disconnect cable, untwist |
cable |
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Turbine does not yaw | 1. | Yaw lock engaged | 1. | Disengage yaw lock |
| 2. | Yaw bearing needs grease | 2. | Inspect, grease bearing |
| 3. | Yaw bearing failure | 3. | Inspect bearing and attempt |
| 4. | Machine not level (yaw axis not |
| manual yaw |
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| vertical) | 4. | Adjust level at tower feet |
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NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.
DOC012R02 | AOC 15/50 User Manual | Nov 2001 |
