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7.5
Commissioning an external fan..............................................................................................66
7.6
Switch on................................................................................................................................67
7.7
Overspeed..............................................................................................................................68
7.8
Switch off................................................................................................................................69
8
Operation....................................................................................................................................................71
8.1
Switching on the machine......................................................................................................72
8.2
Regreasing roller bearings.....................................................................................................73
8.3
Deactivating...........................................................................................................................73
8.4
Switching on again after an emergency switching-off............................................................73
8.5
Stoppages..............................................................................................................................73
8.5.1
Measures in non-operational periods.....................................................................................74
8.5.2
Avoidance of damage to roller bearings during stoppages....................................................75
8.5.3
Measurement of the insulation resistance after an extended stoppage.................................75
8.6
Decommissioning the machine..............................................................................................76
8.7
Re-commissioning the machine.............................................................................................76
8.8
Special operating conditions..................................................................................................76
8.9
Faults ....................................................................................................................................77
8.9.1
Inspections in the event of faults............................................................................................77
8.9.2
Faults in operation..................................................................................................................78
8.9.3
Faults at the external fan........................................................................................................78
8.9.4
Roller bearing faults...............................................................................................................79
8.9.5
Brush faults............................................................................................................................80
8.9.6
Commutator faults..................................................................................................................81
9
Maintenance...............................................................................................................................................83
9.1
Inspection and maintenance..................................................................................................83
9.1.1
Initial inspection......................................................................................................................84
9.1.2
MTTR.....................................................................................................................................86
9.1.3
Main inspection......................................................................................................................86
9.1.4
Regreasing rolling-contact bearings.......................................................................................87
9.1.5
Regreasing intervals and grease types..................................................................................88
9.1.6
Clean the machine.................................................................................................................89
9.1.7
Checking the carbon brushes................................................................................................89
9.1.8
Replacing the carbon brushes...............................................................................................90
9.1.9
Setting the brush rocker and brush holder.............................................................................91
9.1.10
Maintaining the commutator...................................................................................................91
9.1.11
Maintaining terminal boxes....................................................................................................93
9.1.12
Touch up any damaged paintwork.........................................................................................94
9.2
Repair.....................................................................................................................................94
9.2.1
Prepare servicing work...........................................................................................................95
9.2.2
Disassembling the machine...................................................................................................96
9.2.3
Removing rolling-contact bearings.........................................................................................97
9.2.4
Installing the machine............................................................................................................97
9.2.5
Mounting the rolling-contact bearings....................................................................................98
9.2.6
Replacing the speed encoder................................................................................................99
SIMOTICS DC 1HQ7
Operating Instructions 02/2016
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