Maintenance
9.3 Corrective maintenance
1LE7 shaft heights 71 ... 315
Operating Instructions, 04/2022, A5E51689275A-AA
103
Metal fan
•
Shaft heights 71...90: Release the M5 set screw so that the fan can rotate freely on the
shaft.
•
Shaft height 100...315: Remove the locking ring.
•
Use a suitable tool to pull off the fan (puller).
•
Locate the arms of the pulling tool in the openings in the fan in the vicinity of the hub.
•
Alternatively, place the pulling tool at the outer edge of the fan plate.
•
Uniformly withdraw the fan from the shaft by turning the pressure screw of the pulling
tool.
•
Do not apply any hammer blows to avoid damaging the rotor shaft, the fan and the
bearings.
•
Order the appropriate new parts if damaged.
Canopy
Canopies with spacer bolts or with screwed mounting brackets
Forcibly removing or separating can destroy the distance bolts, the connecting elements of
the mounting bracket or the fan cover.
•
Release the fixing screw on the outer surface of the canopy.
•
Under no circumstances remove the spacer bolts or the mounting bracket – or forcibly
separate them from one another or the cover.
Canopies with welded support brackets
•
Release the fixing screws at the contact location (canopy foot - riveting nut) at the outer
surface of the cover mesh.
9.3.4
Canopy, encoder under the canopy
•
For screwed canopies, insert the fastening screws through the holes on the outer surface
of the canopy. Tighten the fastening screws with a torque of 3 Nm ± 10 %.
