Siemens 1LA8 Operating Instructions Manual page 8

Table of contents
8.11.2 Electrical faults............................................................................................................................97
8.11.3 Mechanical faults.........................................................................................................................98
8.11.4 Roller bearing faults....................................................................................................................99
9 Maintenance.............................................................................................................................................101
9.1 Inspection and maintenance.....................................................................................................101
9.1.1 Safety instructions for inspection and maintenance..................................................................101
9.1.2 Risk of explosion when cleaning with compressed air..............................................................103
9.1.3 Measurement of the insulation resistance and polarization index in the context of
maintenance work.....................................................................................................................103
9.1.4 Inspections in the event of faults...............................................................................................104
9.1.5 First service after installation or repair......................................................................................104
9.1.6 General inspection....................................................................................................................105
9.1.7 Servicing the roller bearings......................................................................................................105
9.1.8 Servicing and maintaining the anti-condensation heating.........................................................105
9.1.9 Regreasing intervals and types of grease for operating roller bearings....................................106
9.1.10 Sealing the rolling-contact bearings ("Increased degree of protection" option).........................110
9.1.11 Keeping the cooling air flow clean.............................................................................................110
9.1.12 Touch up any damaged paintwork............................................................................................110
9.1.13 Repainting.................................................................................................................................110
9.1.14 Maintaining terminal boxes........................................................................................................111
9.2 Corrective Maintenance............................................................................................................112
9.2.1 Prepare servicing work..............................................................................................................112
9.2.2 Seal the motor...........................................................................................................................114
9.2.3 Anti-condensation heating.........................................................................................................115
9.2.4 Fan cowl....................................................................................................................................115
9.2.5 External fan made of metal.......................................................................................................115
9.2.6 External fan made of plastic......................................................................................................117
9.2.7 Internal fan................................................................................................................................117
9.2.8 Roller-contact bearings.............................................................................................................118
9.2.8.1 Uninstalling roller-contact bearings...........................................................................................118
9.2.8.2 Remove V ring...........................................................................................................................119
9.2.8.3 Removing the labyrinth sealing ring..........................................................................................119
9.2.8.4 Assembling the rolling-contact bearings....................................................................................120
9.2.8.5 Install the V ring.........................................................................................................................121
9.2.8.6 Installing the V ring ("Increased degree of protection" option)..................................................122
9.2.8.7 Installing the labyrinth sealing ring............................................................................................123
10 Spare parts...............................................................................................................................................125
10.1 Ordering data............................................................................................................................125
10.2 Anti-condensation heating.........................................................................................................126
10.3 Stator and rotor.........................................................................................................................127
10.4 Ventilation..................................................................................................................................128
10.5 Drive end rolling-contact bearings with bearing housing...........................................................129
10.6 Drive end rolling-contact bearings without bearing housing......................................................130
10.7 Roller bearings, DE - end shield with integrated bearing cover................................................131
10.8 Non-drive end rolling-contact bearings with bearing housing....................................................132
10.9 Non-drive end rolling-contact bearings without bearing housing..............................................133
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SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014