7.6 Switch on................................................................................................................................65
7.7 Overspeed..............................................................................................................................66
7.8 Switch off................................................................................................................................67
8 Operation....................................................................................................................................................69
8.1 Switching on the machine......................................................................................................70
8.2 Regreasing roller bearings.....................................................................................................71
8.3 Deactivating...........................................................................................................................71
8.4 Switching on again after an emergency switching-off............................................................71
8.5 Stoppages..............................................................................................................................71
8.5.1 Measures in non-operational periods.....................................................................................72
8.5.2 Avoidance of damage to roller bearings during stoppages....................................................73
8.5.3 Measurement of the insulation resistance after an extended stoppage.................................73
8.6 Decommissioning the machine..............................................................................................74
8.7 Re-commissioning the machine.............................................................................................74
8.8 Special operating conditions..................................................................................................74
8.9 Faults ....................................................................................................................................75
8.9.1 Inspections in the event of faults............................................................................................75
8.9.2 Faults in operation..................................................................................................................76
8.9.3 Faults at the external fan........................................................................................................76
8.9.4 Roller bearing faults...............................................................................................................77
8.9.5 Brush faults............................................................................................................................78
8.9.6 Commutator faults..................................................................................................................79
9 Maintenance...............................................................................................................................................81
9.1 Inspection and maintenance..................................................................................................81
9.1.1 Initial inspection......................................................................................................................82
9.1.2 MTTR.....................................................................................................................................84
9.1.3 Main inspection......................................................................................................................84
9.1.4 Regreasing rolling-contact bearings.......................................................................................85
9.1.5 Regreasing intervals and grease types..................................................................................86
9.1.6 Clean the machine.................................................................................................................87
9.1.7 Checking the carbon brushes................................................................................................87
9.1.8 Replacing the carbon brushes...............................................................................................88
9.1.9 Setting the brush rocker and brush holder.............................................................................89
9.1.10 Maintaining the commutator...................................................................................................89
9.1.11 Maintaining terminal boxes....................................................................................................91
9.1.12 Touch up any damaged paintwork.........................................................................................92
9.2 Repair.....................................................................................................................................92
9.2.1 Prepare servicing work...........................................................................................................93
9.2.2 Disassembling the machine...................................................................................................94
9.2.3 Removing rolling-contact bearings.........................................................................................95
9.2.4 Installing the machine............................................................................................................95
9.2.5 Mounting the rolling-contact bearings....................................................................................96
9.2.6 Replacing the speed encoder................................................................................................97
9.2.6.1 Speed sensor with conical hub..............................................................................................97
Table of contents
SIMOTICS DC 1GG5
Operating Instructions 02/2016 7
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