LS Industrial Systems Metasol Series, Технический каталог, Страница: 134 / 156

133
J
Fig 9. Mounting and separation of Cluster
Fig 8. The standard figure for contact replacement
4. Inspection method for moving contact condition
The degree of damage of contact can be checked upon following inspection method periodically.
1) Separate arc chamber.
2) Close the circuit breaker and compare the condition of the moving contact with the below figure to decide
whether it is to be replaced or not.
5. Inspection method for Cluster
1) Inspect the external appearance and check for
following possible damages.
� Check for discolored parts
�
Check for worn-off coating
� Check for damages on the plate spring
�
Check for assembly condition of cluster
� Check for other possible damages on the cluster
2) Inspect the contact part of the cluster and terminal block
and check the followings.
� Check if there is enough conducting grease on the
contacting part.
�
Check if conducting grease has hardened.
� Check for other possible problems on the contacting part.
3) Remove the cluster by hand and replace it with a new
one when damage of the cluster is confirmed. (refer to fig. 9)
4) If grease on the contacting part has been hardened or
foreign body has got into the parts, remove it clean and
apply new grease.
Handling and Maintenance
New Product
Standard Line Standard Line
Standard Line Standard Line
Observation spot
Replacement Needed
3. Inspection and Maintenance
630~
4000A
5000~
6300A