Siemens SIMOTICS TN N-compact 1LH8 - Page 8

8.10.3 Mechanical faults...................................................................................................................89
8.10.4 Cooling system faults.............................................................................................................90
8.10.5 Roller bearing faults...............................................................................................................91
9 Maintenance...............................................................................................................................................93
9.1 Inspection and maintenance..................................................................................................93
9.1.1 Safety instructions for inspection and maintenance...............................................................93
9.1.2 Measurement of the insulation resistance and polarization index in the context of
maintenance work..................................................................................................................95
9.1.3 Inspections in the event of faults............................................................................................95
9.1.4 First inspection after installation or repair..............................................................................95
9.1.5 General inspection.................................................................................................................96
9.1.6 Servicing the roller bearings...................................................................................................97
9.1.7 Servicing the water-jacket cooling..........................................................................................97
9.1.8 Servicing and maintaining the anti-condensation heating......................................................97
9.1.9 Regreasing intervals and types of grease for operating roller bearings.................................97
9.1.10 Sealing the rolling-contact bearings ("Increased degree of protection" option)...................101
9.1.11 Cleaning the cooling water ducts.........................................................................................102
9.1.12 Touch up any damaged paintwork.......................................................................................102
9.1.13 Maintaining terminal boxes..................................................................................................102
9.2 Corrective Maintenance.......................................................................................................103
9.2.1 Prepare servicing work.........................................................................................................103
9.2.2 Seal the motor......................................................................................................................104
9.2.3 Screws with preCOTE coating.............................................................................................104
9.2.4 Roller-contact bearings........................................................................................................105
9.2.4.1 Removing roller bearing.......................................................................................................105
9.2.4.2 Remove V ring.....................................................................................................................106
9.2.4.3 Removing the labyrinth sealing ring.....................................................................................106
9.2.4.4 Assembling the rolling-contact bearings..............................................................................107
9.2.4.5 Install the V ring...................................................................................................................108
9.2.4.6 Installing the V ring ("Increased degree of protection" option).............................................109
9.2.4.7 Installing the labyrinth sealing ring.......................................................................................110
10 Spare parts...............................................................................................................................................113
10.1 Ordering data.......................................................................................................................113
10.2 Using commercially available spare parts............................................................................113
10.3 Ordering spare parts via the Internet...................................................................................113
10.4 Anti-condensation heating....................................................................................................114
10.5 Stator and rotor....................................................................................................................115
10.6 Drive end rolling-contact bearings with bearing housing......................................................116
10.7 Drive end rolling-contact bearings without bearing housing.................................................117
10.8 Roller bearings, DE - end shield with integrated bearing cover...........................................118
10.9 Non-drive end rolling-contact bearings with bearing housing..............................................119
10.10 Non-drive end rolling-contact bearings without bearing housing.........................................120
10.11 Roller bearings, NDE - end shield with integrated bearing cover.........................................121
10.12 Rolling-contact bearings with speed sensor assembly........................................................122
Table of contents
SIMOTICS TN Series N-compact 1LH8
8 Operating Instructions 06/2017