PS S1.0 1700
001
Version no T-code
F-code Section C-code
Drive Motor
66
Service Manual 1997-07-15
Rapid commutator
wear with bright surface
copper dragging
Foreign material in brush face
Wrong brush grade
Brush vibration
43-45-47-49
61
39-52-58-59
Indications Appearing as Heating
Indications Immediate Causes Primary Faults
Heating in windings Severe load condition
Unbalanced magnetic field
Unbalanced armature
currents
Poorly equalized parallel
operation lack of ventilation
38-41-42-53
18-19-20-21-27-28-29
8-19-22-25-27-28-29-37
7-13-23-24
Heating at commutator Severe load condition
Severe sparking
High friction
Poor commutator surface
Depreciation
High contact resistance
38-41-42
7-8-9-12-20-33-45-57
10-11-36-43-45-49-58-59
See specific surface fault in
evidence
6-24
56
Heating at brushes Severe load condition
Faulty machine adjustment
Severe sparking
Raw streaks on commutator
surface
Embedded copper
Wrong brush grade
38-41-42
7-10-11-12-26
See “Sparking”
See “Streaking or threading of
surface”
See “Copper in brush face”
57-58-59-61-62
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