Document No. 1112M001 Revision 1.8 Date: June 2013
34
8.0 Questions and Answers
1
The tail is swinging from side
to side or moving up and
down.
The blade rotor is unbalanced. There
is blade damage.
2
The turbine fails to track light
winds / always comes to rest
in one direction.
The tower is not vertical and so the
turbine is not horizontal.
3
I can hear a rattle or unusual
noise.
There is a defect on the turbine or the
tower. This requires urgent attention.
4
The turbine does not stop
when I apply the electric brake
switch.
The blades are extremely powerful.
Switch the brake on and off a few
times. The turbine will stop when the
wind reduces down a little.
5
The turbine starts but only
rotates very slowly.
The brake switch is on. There is a
cable short. The generator is shorted
(unlikely).
6
What maintenance must be
done and how often?
Consult the maintenance schedule in
this manual.
7
The tower vibrates at certain
wind speeds.
The turbine is out of balance. The
tower is resonating with natural
vibration.
8
The turbine sounds different
from when it was installed.
See (3). A blade is damaged. The
blade leading edge tape is defective
9
Should I lower the turbine in
high wind?
In general, No. Lowering is
recommended before incident winds
greater than the survival wind speed.
Consult the technical data. Lower the
turbine if flying debris is possible.
10
Will the turbine remain in
control when disconnected?
Yes. The pitch control will always limit
the rotor speed. The voltage on the
wires will however be a danger!
11
I can hear a slight hum/whine
from the turbine.
This is a normal sound from any
generator and depends on loading.
12
The tower deflects slightly
downwind and then returns to
vertical as the wind speed
increases.
The tower withstands the lateral
thrust from the turbine. This bending
force reduces as the pitch control
operates.
13
Can I replace one damaged
blade?
No. Blades are balanced in a set of
three. All three blades must be
replaced.
14
Can I adjust the pitch control
to alter the machine
performance?
No. The pitch control is factory
assembled and calibrated. Do not
tamper in any way.
