M. Servation and grooving of commutator or slipring
  Possible Causes Remedies
2 Vibration from external causes, i.e. forge hammer Remove causes - mount machine on shock absorbers
3 Vibration from internal causes, i.e. out of balance Balance armature and check for bearing wear
10 Oil or dirt on common commutator or slipring Clean
11 Grains of abrasive in the brush contact face Rebed and clean brush face
18 Commutator or slipring excentric Turning and grinding at near rated speed
20 Spring pressure too low Adjust to brush grade
21 Spring pressure too high Adjust to brush grade
28 Sparking Check pressure, grade, holders, brush alignment, remove burns
29 Radial brush holders not in correct position Adjust holder to radial position, distance from commutator 2-3mm
30 Reaction type holder mounted trailing Reverse holders or direction of rotation
34 Brush holder mounted too far from commutator or slipring Adjust holder to be 2mm from commutator
37 Humidity too low Humidify air  possibly change brush grade
38 Humidity too high Enclose machine or draw cooling air from humidity object
39 Dusty atmosphere Remove cause, install filter
40 Gas or acid fumes in atmosphere Arrange for clean air cooling
41 Long periods at low or steady load Change brush grade - ask for our recommendation

Where we Are

Unit 1, 120 Shad Road,
Wadeville Ext2
South Africa

Mail Us

P.O. Box 673
South Africa

Contact Us

Tel: +27 11 824-1168
Fax: +27 11 824-1356

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