Toshiba HV6AS - Manual (Page 31)

MAINTENANCE Page 27
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.