Wilo Vardo WEEDLESS-F Instrucciones De Instalación Y Funcionamiento página 245

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Fig. 9: Inserting the union insert
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Fig. 10: Attaching the propeller blades
Installation and operating instructions Wilo-Vardo WEEDLESS-F
Installation and electrical connection
Attaching the propeller blades
1 Flat gasket
2 Hub
3 Union insert
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4 Propeller blade
5 Drilled hole for union insert
6 Threaded pin
7 Washer
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8 Hexagon nut
9 Hexagon counter nut
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The drive unit, with pre-assembled mixer shaft and hub, is firmly affixed to the
support structure.
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Propeller blades and required union inserts are to hand.
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Setting angle defined.
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Direction of thrust defined.
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Torque wrench with width across flats of 55 and 750 Nm (553 ft·lb) is to hand.
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Ensure work is carried out by two persons.
1. Insert the union insert sideways into the drilled hole.
NOTICE! Observe the angle specification engraved on the union insert. The
angle specification must be visible when inserted.
NOTICE! Ensure the propeller blade alignment matches the direction of thrust!
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2. Place flat gasket on threaded pin.
3. Insert propeller blade with threaded pin into the specified attachment on the hub,
and fix in place. NOTICE! The union insert must engage in the specified notch on
the hub.
4. Slide the washer onto the threaded pin.
5. Screw the hexagon nut on the threaded pin until hand-tight.
6. Tighten the hexagon nut with the torque wrench. Tightening torque: 750 Nm
(553 ft·lb).
7. Screw the hexagon counter nut on the threaded pin until hand-tight.
8. Tighten the hexagon counter nut with the torque wrench. Tightening torque:
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750 Nm (553 ft·lb).
9. Repeat these work steps for each propeller blade.
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10.Check that all propeller blades are firmly fixed in place.
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▶ Propeller blades are installed. Mount the cover cap.
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