Kestrel e300i User Manual page 20

e300i User Manual
Approval:
The following schedule is designed to avoid machine failure. Component life will be
First post installation visual check
Visual Inspection, listen for abnormal noise and
vibrations.
Close inspection, check for any loose bolts, blade
damage. Check the integrity of the pitch control (see
tips below). Touch up paint.
Dismount the machine and check for transfer brush
wear. Check for wear on pitch control parts. Replace as
required. Treat any corrosion and touch up paint.
Dismount the machine and replace all bearings
(generator, yaw shaft and pitch control)
Other Auxiliary Inspections Other Auxiliary Inspections Other Auxiliary Inspections Other Auxiliary Inspections
Inspections should also be done with regard to all other site equipment. Specific procedures
are contained within the relevant user manuals. The following list illustrates typical topics.
a) Inspection of the tower including all bolts/fasteners ground anchors and guy wires.
b) Inspection of the e300
c) Check all electrical connections for tightness and corrosion.
d) Functionality and general checks on all other electrical equipment.
Maintenance Tips Maintenance Tips Maintenance Tips Maintenance Tips
The pitch control hub should be checked in the following way. Visually inspect the unit. Check
for any stress cracks, broken or cracked springs and/or corrosion. Use gentle pressure to
twist the blade in both directions. There should be virtually no movement or slackness. Push
and pull the blade along its length. There should be no movement of the blade. If any wear
or defect is detected, consult your dealer or the Kestrel factory. Do not under any
circumstances strip the assembly down without the required knowledge.
The generator produces a slight humming sound. This is quite normal. Any other grinding,
clicking or scraping noises are abnormal and must be investigated.
Good rotor balance is very important for long and reliable operation. The wind turbine must
not be allowed to continue in operation if any unbalance is observed. The most common
symptom of imbalance is observed when the turbine swings slightly from side to side as it
speeds up. The swinging action will be worse at a particular rotor speed and may well
disappear at higher speeds.
The rotor blades can suffer chips and erosion, mainly on their leading edge. Small chips can
be repaired with glass fibre filling compound. All cracks must be carefully examined.
Surface cracks can be repaired but any structural cracks must render the blade inoperative.
If there is any doubt, the blade set must be replaced for safety. All blade damage can
allow water to enter. This will cause the blade set to become unbalanced which will cause
other mechanical failures and shortened bearing life.
Document #: 0503M01A
Date: March '08
reduced on sites that exhibit high turbulence.
Wind Power Class
i i i i tower securing bolts.
REV : 1.3
Page 20 of 25
1 2 3 4
All sites 1 month after installation
After extreme After extreme
weather and every weather and
3 months every 2 months
12 monthly intervals
Every 5 years Every 3 years
Every 4 – 5
Every 8 – 10 years
5 6 7
Six monthly
intervals
years
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