13.4 -
Removing and refitting a fan
■ The removal of a fan is a simple operation, however special care must be taken during handling, in particular:
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Do not pull on the blades.
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Place the fan motor assembly on a safe surface away from areas of activity.
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If the unit is to be shipped, provide the necessary protection and packing materials.
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Do not remove the panel.
■
The fan must be repaired if any of the blades are bent.
Operating procedure for motor types A9A, A9C, A8A, A8B,E9A, E8A, E8B, M9, M8, B9A, B9B, B9C, B8A, B8B, B8C and B8D:
Switch off the power supply using the mains switch or maintenance switch (optional).
■ Disassembly:
1. Remove the cover from the motor's terminal box.
2. Disconnect the wires, marking the terminals to facilitate rewiring.
3. Loosen the cable gland(s) on the terminal box and pull out the cable. Remove the clamps
connecting it to the fan support arm.
4. Remove the 4 M8 bolts mounting the fan on the collar (T40 torx type spanner).
WARNING: do not unscrew the motor mounting bolts.
5. Remove the fan using the lifting lugs.
■ When refitting, position the fan on the 4 collar inserts then carry out the operations in
the reverse order to removal, ensuring only the M8 bolts provided are used (tightening torque 16 Nm).
■ Before turning the unit back on, make sure:
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the ends of the blades do not touch the collar (centring of the blades in their collar): rotate the impeller by hand.
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the wiring is correct and the terminals are properly tightened.
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the motor terminal box seal is correctly in place and that the bolts keeping it closed are torque tightened to 1.5 ± 0.2 Nm (risk of
rainwater ingress).
-
the packing boxes are properly tightened
Operating procedure for motor types A9B, A9D, A8C, E9B and E8C:
Switch off the power supply using the mains switch or maintenance switch (optional).
■ Disassembly:
1. Remove the fan protective grille
2. Remove the cover from the motor's terminal box.
3. Disconnect the wires, marking the terminals to facilitate rewiring.
4. Loosen the cable gland(s) on the terminal box and pull out the cable. Remove the clamps
connecting it to the fan support arm.
5. Remove the 12 bolts mounting the fan on the unit.
6. Remove the fan using lifting hooks in the ø12 mm holes
Ø 12 mm 8 turns to be used
to install the lifting hooks
Do not use the holes in the
shaded areas
IMPORTANT: the handling hooks must be positioned diametrically opposite the widest parts of the fan's
collar edge.
13 - MAINTENANCE
15
Summary of Contents for 09VE
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