Yale B827 User Manual

Table 1. Normal Commutator Surfaces
A light brown surface of the commutator where it ro-
tates on the brushes is a normal condition. The surface
of the commutator must be smooth.
Variations between light brown and dark brown colors
are also normal. The surface of the commutator must
be smooth.
A condition called slot bar marking is also normal if the
commutator surface is smooth. The variable color oc-
curs in a pattern according to the number of conductors
per slot.
A very dark surface is also a normal and an acceptable
condition if the commutator surface is smooth.
Brush and Commutator Inspection 0620 YRM 0294
4

Yale B827 Specifications

General

Brand	Yale
Model	B827
Category	Lifting Systems
Language	English