Zehnder VDA Série Mode D'emploi page 12

VDA 200 to 560
Disassembly
Before starting disassembly of the mo-
�
tor, isolate the fan from the mains; first
turn off the operating switch, followed
by the mains switch;
Disconnect the connection cable(4)
�
between the motor and external termi-
nal box or mains switch(possibly in the
terminal box);
Loosen the nuts(5) and remove the
�
outer assembly plates(6);
Remove the upper casing(7) and the
�
protective grille(1);
Remove the motor cover(3) by pulling
�
it upwards and pushing the springs(2)
outwards;
Loosen the nuts(8) and remove the inner
�
assembly plates(9);
Remove the motor frame(10) with motor
�
and vane from the fan.
Do not set aside with the vane on the
ground!
Assembly is performed in the reverse
�
order;
Check the free rotation of the vane;
�
Check the rotating direction of the vane
�
(see arrow on fan). Incorrect rotation
may result in the motor burning out;
Switch on the fan; first the mains
�
switch, followed by the operating
switch.
12 - EN
VDA 200 - 560
1a.
Vane disassembly
Remove the catch plate from the vane;
�
Remove the vane from the motor;
�
Assembly is performed in the reverse
�
order;
If an alignment mark is present on the
�
hub plate of the vane, ensure that this
is aligned opposite the key way on the
motor shaft as this is the position in
which the vane was balanced.