102 Maintenance
Additional fan
There is an additional cooling fan in all IP55 units and most IP21 units. However,
there is no additional fan in the following IP21 units: -0003-3, -0004-3, -0005-3,
-0004-5, -0005-5 and -0006-5. The following IP55 units have two additional fans:
-0205-3 and -0255-5.
Replacement (R2, R3)
Remove the front cover. To remove the fan, release the retaining clip (1). Disconnect
the cable (2, detachable terminal). Install the new fan in reverse order.
Replacement (R4, R5)
Remove the front cover. The fan is located on the lower right-hand side of the unit
(R4) or on the right-hand side of the control panel (R5). Lift the fan out and
disconnect the cable. Install the fan in reverse order.
Replacement (R6)
Remove the top cover by lifting it by the rear edge. To remove the fan, release the
retaining clips by pulling the back edge (1) of the fan upwards. Disconnect the cable
(2, detachable terminal). Install the new fan in reverse order.
1
View from above when front
cover is removed
Air flow upwards
Rotation direction
2
View from above when top
cover is removed
1
2
Air flow upwards
Rotation direction
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