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Table 2 Check Points for Periodic Inspection
Check Point Check Item Check Method Criteria Disposition
Operating
Mechanism
Loose bolts,
nuts or screws
Tighten using
screwdriver or
wrench.
Make sure all bolts, nuts
and screws are tight.
Tighten if loose.
See
Table 1 for
tightening torques.
Dust or foreign
matter inside
Visual
inspection.
The circuit breaker
should be clean and
contain no foreign matter.
Wipe with a clean
dry cloth.
Indicator
operation
Visual
inspection.
Make sure the number of
operations is correctly
displayed.
Check the cause
and repair.
Warpage Visual
inspection.
There should be no
warpage or missing
parts.
Check the cause
and repair.
Smooth
operation
Manual
operation.
Visual
inspection or
touch. Check
lubrication.
Make sure moving parts
operate smoothly.
Apply a small
amount of
lubrication.
Main Circuit Discoloration
due to heat
from conducting
parts
Visual
inspection.
Make sure there is no
discoloration.
Check the cause
and repair. Tighten
connections to circuit
breaker. See
Table 1 for
tightening torques.
Loose bolts,
nuts or screws
Tighten using a
wrench.
Make sure all bolts, nuts
and screws are tight.
See
Table 1 for
tightening torques.
Dust on surface
of vacuum
interrupter
Visual
inspection.
Make sure there is no
dust on the surface.
Wipe with a clean,
dry cloth.
Insulator Dust, foreign
matter or
damage
Visual
inspection.
Make sure there is no
dust, foreign matter or
breakage.
Wipe with a clean,
dry cloth. If
damaged, contact
Toshiba.
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net