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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
SIMOTICS DC 1GG7
Operating Instructions 02/2016
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