Operating Irregularities
As with any equipment, the proper functioning of the appa
ratus will depend on the adjustment and care which it receives.
Certain irregularities in operation and their possible causes are
listed:
Pole Units failing to close
1. Dirt around the closing magnet plunger.
2. Poor connections to the closing coil.
3. Closing coil burned out.
Fig.
8.
Renewal Parts
1.
Overload Relay
2. Moving Contact/Assembly
3. Moving Contact/Stationary
4. Arcing Contact/Stationary
5. ARC Chambers
6. Auxiliary Switch
7. Closing Coil
8.
Holding/Trip Coil
9.
Shunt Trip Coil
10. Finger Clusters
I.B.
201
Holding armature fails to hold
1.
Dirt under the armature.
2. Armature or holding magnet surface is not flat.
3. Poor connection in the holding coil current.
Breaker slams open when closing
1. Improper adjustment of toggle links.
2. Faulty holding magnet or armature.
10
When communicating with Westinghouse regarding the
product covered by this Instruction Book, include all data
contained on the nameplate attached to the equipment.* Also,
to facilitate replies when particular information is desired, be
sure to state fully and clearly the problem and attendant
conditions giving the figure showing parts in question and
using names for the parts as given.
Address all communications to the nearest Westinghouse
Sales Office.
For a permanent record, it 1s suggested that all nameplate data be duplicated and retained
m
a conven1ent location
7
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