Kestrel e300i User Manual page 11

e300i User Manual
Approval:
3. 3. 3. 3.9 9 9 9 Blade Assembly Blade Assembly e300
Blade Assembly Blade Assembly
IMPORTANT: The wheels of a car are balanced to allow smooth operation. In the same way, the
propeller rotor must be assembled such that it is balanced. Rotor imbalance will cause vibration,
unstable operation of the turbine and eventual damage. Please follow the steps given below to
assemble a balanced rotor.
GENERAL
NOTE: The blades are fitted on the front of the pitch control hub.
and fit all three blades on to the hub as shown. Each blade carries a serial number and a balance
mark on the front face of the blade. Be sure to fit the blades the correct way round. The blade
root is marked "FRONT" below the serial number on each. The rotation is clockwise viewed at the
balancing requires that the three blade tips be equally spaced when fitted.
a) Support the generator (02) such that the blades can be fitted to the
pitch hub (03).
b) Fit two blade bolts (11) through a blade compression plate (09) such
that they face toward the generator. Now fit the first blade (08) on to
the bolts and offer the blade
two Nylock nuts (13) on to the blade bolts from the rear. Do not tighten
the nuts.
c) Repeat (b) such that all three blades are sandwiched between the
three compression plates (09) and the three blade mounts on the pitch
control hub. Now gently tighten all six blade bolts such that each blade
can still move sideways.
d) Using a tape measure, accurately measure the distance between each
of the three blade tips. Move each blade sideways until all three blade
tips have the same measured distance between them.
e) Now tighten all the blade bolts to the required torque setting (see 3.4
Pg 7). Do not over-tighten the bolts such that any blade is damaged or
crushed.
f) Check the assembly for correctness. Check the blades are fitted
correctly, the bolts are all tightened and that the rotor spins freely and
evenly on the generator. Check the distance between the three blade
tips (or balance marks) to be equal.
g) Now fit the nose cone (10) over the three spokes and fit the three Nylock nuts (16) and
washers (17).
Document #: 0503M01A
Date: March '08
i i i i
e300
e300 e300
front of the turbine. Each blade mount has two bolt holes. Fit
the bolts with the washers provided and through the blade
compression plate with the Nylock nuts behind the pitch
control.
The blades are factory balanced. Note that exact
Please follow the instructions given below.
from the front
Refer to the assembly drawing
to one blade mount. Fit the
REV : 1.3
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