SCHABMULLER TSA Series - Carbon brushes (for DC motors); Collector (for DC motors)

Operating and maintenance instructions
Maintenance
Version 1.0 Page 47 of 56
Step
Procedure
9
Carry out inspection and examination in order to detect and eliminate any
faults at an early stage before damage occurs.
10
Adjust the maintenance intervals to the operating conditions and the local
circumstances (dirt accumulation, switch-on frequency, load, brush wear,
insulation resistance).
8.2.1 Carbon brushes (for DC motors)
The abrasion of the carbon brushes must be checked at intervals of half a year or 500
operating hours. The brush chamber must be cleaned of carbon dust and the carbons
checked for ease of movement.
The abrasion must not exceed the value given in the table. This means that the
resulting minimum residual height of the expired carbon brushes must not be
undercut.
If the remaining height of the carbon brushes is undercut, they must be replaced by
original Schabmüller carbon brushes in order to guarantee the same motor
characteristics.
Brush springs with insufficient spring pressure must be replaced by new brush
springs.
Carbon height
17
22
28
30
31
32
40
Max. abrasion
8
12
14
15
16
16
20
Min. remaining
height
9
10
14
15
15
16
20
8.2.2 Collector (for DC motors)
Starting from the new condition, the collector may only be tapered on one side by a
maximum of the machining dimensions specified below. Mica must be sawn to a depth
of at least 0.5 mm. The width of the mica must not be changed. The edges must be
free of burrs.
Carbon barrel diameter
One-sided planing
33 mm
1.0 mm
36 mm up to and including 64 mm
1.5 mm
67 mm up to and including 100 mm
2.0 mm
107 mm
2.5 mm
126 mm
5.0 mm