Siemens 1LA8 Operating & Installation Instructions Manual page 8

Table of contents
8.6 Switching on again after an emergency switching-off............................................................98
8.7 Stoppages..............................................................................................................................98
8.7.1 Avoidance of condensation or formation of condensation within the machine.......................99
8.7.2 Avoidance of damage to roller bearings during stoppages....................................................99
8.7.3 Shaft grounding brushes (option).........................................................................................100
8.7.4 Measurement of the insulation resistance after an extended stoppage...............................100
8.8 Decommissioning the machine............................................................................................101
8.9 Re-commissioning the machine...........................................................................................101
8.10 faults.....................................................................................................................................101
8.10.1 Inspections in the event of faults..........................................................................................101
8.10.2 Electrical faults.....................................................................................................................102
8.10.3 Mechanical faults.................................................................................................................103
8.10.4 Roller bearing faults.............................................................................................................104
9 Maintenance.............................................................................................................................................105
9.1 Inspection and maintenance................................................................................................105
9.1.1 Safety instructions for inspection and maintenance.............................................................105
9.1.2 Measurement of the insulation resistance and polarization index in the context of
maintenance work................................................................................................................107
9.1.3 Inspections in the event of faults..........................................................................................107
9.1.4 First inspection after installation or repair............................................................................108
9.1.5 General inspection...............................................................................................................108
9.1.6 Servicing the roller bearings.................................................................................................109
9.1.7 Servicing and maintaining the anti-condensation heating....................................................109
9.1.8 Regreasing intervals and types of grease for operating roller bearings...............................109
9.1.9 Sealing the rolling-contact bearings ("Increased degree of protection" option)...................113
9.1.10 Keeping the cooling air flow clean........................................................................................114
9.1.11 Touch up any damaged paintwork.......................................................................................114
9.1.12 Repainting............................................................................................................................114
9.1.13 Maintaining terminal boxes..................................................................................................115
9.2 Corrective Maintenance.......................................................................................................116
9.2.1 Prepare servicing work.........................................................................................................116
9.2.2 Seal the motor......................................................................................................................117
9.2.3 Screws with preCOTE coating.............................................................................................118
9.2.4 Fan cowl...............................................................................................................................118
9.2.5 External fan made of metal..................................................................................................119
9.2.6 External fan made of plastic.................................................................................................120
9.2.7 Internal fan...........................................................................................................................121
9.2.8 Roller-contact bearings........................................................................................................122
9.2.8.1 Uninstalling roller-contact bearings......................................................................................122
9.2.8.2 Remove V ring.....................................................................................................................123
9.2.8.3 Removing the labyrinth sealing ring.....................................................................................123
9.2.8.4 Assembling the rolling-contact bearings..............................................................................124
9.2.8.5 Install the V ring...................................................................................................................125
9.2.8.6 Installing the V ring ("Increased degree of protection" option).............................................126
9.2.8.7 Installing the labyrinth sealing ring.......................................................................................127
10 Spare parts...............................................................................................................................................129
10.1 Ordering data.......................................................................................................................129
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SIMOTICS TN Series N-compact 1LA8
Operating Instructions 08/2017