Item
Motor Brushes
Measure,
Cushion Rubber
Contactor
Contacts
Pendant
Function
(switches)
Pendant (wiring)
Pendant
(housing)
Pendant (labels)
Pendant (cord)
Electrical
Continuity
Warning Labels
Hoist Capacity
Label
*Be sure to replace carbon brush on top of hoist (pictured above) as well on the bottom/opposite of above
Model
OZ500EC
OZ1000EC, OZ2000EC, OZ4000EC
Table 8-1 Hoist Inspection Methods and Criteria
Method
The "B" dimension should not be less than minimum value
Visual
Visual
Should be free of significant deformation.
Visual
Contacts should be free of significant pitting or deterioration.
Depressing and releasing push buttons should make and
break contacts in switch contact block and result in cor-
responding electrical continuity or open circuit. Push buttons
should be interlocked either mechanically or electrically to
prevent simultaneous energization of circuits for opposing
Visual
Wire connections to switches in pendant should not be loose
Visual
Labels denoting functions should be legible.
Visual
Pendant housing should be free of cracks and mating sur-
faces of parts should seal without gaps.
Visual,
Surface of cord should be free from nicks, gouges and abra-
sions. Each conductor in cord should have I 00% electrical
continuity even when cord is flexed back and forth. Pendant
cord strain relief cable should absorb the entire load associ-
ated with forces applied to the pendant.
Visual
Warning labels should be affixed to the hoist and they should
Visual
The label that indicates the capacity of the hoist should be
legible and securely attached to the hoist.
Table 8-2 Motor Brush Dimensions
Criteria
listed in Table 8-2.
motions. Example: Up and Down
or damaged.
be legible.
"A" Dimension (inches)
Standard
0.60
0.67
EN pg.15
B
A
"B" Dimension (inches)
Discard
Action
Replace
Replace
Replace
Repair or replace as
necessary
Tighten or repair
Replace
Replace
Replace
Replace
Replace
0.30
0.30