Tel: +44 (0)845 652 0396
Skyrrid Farm, Pontrilas, Hereford. HR2 0BW. UK
www.leturbines.com
Page 44 of 47
Issue:
The turbine frequently comes to rest in the same horizontal position, regardless of which direction
the wind is coming from.
Potential Causes:
Turbines require that their towers are vertical. Although the LE-450 is fitted with
counterweights to compensate for the pitching and rolling of a yacht, it is still
recommended in all applications that the turbine tower is set to be perfectly vertical. The
LE-450 is designed to be slightly tail heavy so that when it is fitted to a yacht that is healing
in the wind, the turbine will favour the windward side.
Issue:
The turbine never seems to reach its operating speed and does not give any or very little power
output.
Potential Causes:
You may have installed a 24V turbine on a 12V battery system. This means that the turbine
will reach its cut-in RPM prematurely and this in turn will stall the blades. Ensure that you
have the correct voltage turbine for your application.
Issue:
A slight oscillation can be observed in the turbine tail fin whilst the turbine is rotating at certain
speeds.
Potential Causes:
Due to the nature of small wind turbines, a small level of oscillation is acceptable as the
turbine passes through certain speeds. This oscillation movement can be minimised by
ensuring that the distance between each tip is within tolerance (please see step 4, page 8).
Ensure, also, that the assembled rotor is correctly and concentrically fitted to the drive
bearing housing.
Issue:
When fitted to a yacht, vibration is transmitted through to the hull of the vessel.
Potential Causes:
Small wind turbines are electro-mechanical devices and as a result a small amount of 'hum'
can be present during the operation of the LE-450. Depending on the type and method of
mounting to a yacht, some of the natural hum of the turbine alternator can be transmitted
to the hull of the vessel. In order to limit or avoid this vibration transmission, it is
recommended that appropriate anti-vibration mountings and bushes are used upon the
structure used to support the turbine.
Summary of Contents for GA-LETU-016
Page 47: ......
