Comparison of decibel levels from a hypothetical wind turbine
(from 250 m away) with other sources of noise.
Maintenance
A wind turbine requires periodic maintenance such as oiling and greasing, and regular
safety inspections. Check bolts and electrical connections annually; tighten if
necessary. Once a year check wind turbines and towers for corrosion or cracks and
check the guy wires supporting the tower for proper tension on a monthly basis.
If the turbine blades are wood, paint to protect from the elements. Apply a durable
leading edge tape to protect the blades from abrasion due to dust and insects in the air.
If the paint cracks or the leading edge tape tears away, the exposed wood will quickly
erode. Moisture penetrating into the wood causes the rotor become unbalanced,
stressing the wind generator. Inspect wooden blades annually, and do any repairs
immediately.
After 10 years, blades and bearings may need to be completely replaced. With proper
installation and maintenance, your turbine can last 20-30 years or longer. Proper
maintenance will also minimize the amount of mechanical noise produced by your
wind turbine.
