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3)
Rotor Blade Assembly -
Take the three rotor blades and rotor hub plate. Be careful when
handling the blades, they have
VERY SHARP EDGES
. Use a 13 mm A/F socket and hexagon
key and three M8 x 60mm long set screws to attach each blade to the hub plate - see Fig-5.
Ensure that the cap head end of the screw is on the rotor hub plate side (thus allowing the
washers and nuts to locate inside of the blades. The blades should all be fixed to the hub
plate on the same side, with the blades in the same orientation. It is important that a
washer is used underneath the anti-vibration nuts. 3 set-screws, 3 washers and 3
anti-vibration nuts should be used on each blade. Tighten the fixings until the blades are
safely secured. Do not over-tighten the nuts as this may damage the blades and fixings.
Fig 5: Attaching the 3 rotor blades to the hub plate
4)
Check the Tip Spacing -
Although the turbine blades are fitted with location 'keyways', it is
important to check the tip spacing. Lay the assembled rotor blade on a flat surface. Using
a tape measure or long steel rule ensure that the spacing between each tip is equal to
within a tolerance of +/-1.5 mm. Adjust the blades as required. Output performance may
suffer if the blades are inaccurately set - see Fig-6.
Fig 6: Checking tip spacing
Summary of Contents for LE-600
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