GE Fuji Electric MICRO-SAVER AF-300, Руководство для стартапов

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7-2 7-3
Check part Check item How to inspect Evaluation criteria
Structure such as
frame and cover
1) Abnormal noise and excessive vibration
2) Loose bolts
3) Deformation and breakage
4) Discoloration and deformation caused by
overheat
5) Check for dirt and dust.
1) Visual and audible inspec-
tion
2) Retighten.
3), 4), 5)
Visual inspection
1), 2), 3), 4), 5)
No abnormalities
Main cir
cuit
Common 1) Check if bolts and screws are tight and not
missing.
2) Check the devices and insulators for defor-
mation, cracks, breakage and discoloration
caused by overheat and deterioration.
3) Check for dirt and dust.
1) Retighten.
2), 3)
Visual inspection
1), 2), 3)
No abnormalities
Conductor
and wire
1) Check the conductor for discoloration and
distortion caused by overheat.
2) Check the sheath of the cable for cracks and
discoloration.
1), 2)
Visual inspection
1), 2)
No abnormalities
Terminal
block
Check that the terminals are not damaged. Visual inspection No abnormalities
Filtering
capacitor
(Note 1)
1) Check for electrolyte leakage, discoloration,
cracks and swelling of the case.
2) Check if the safety valve does not protrude
remarkably.
3) Measure the capacitance if necessary.
1),2)
Visual inspection
3) Measure discharge time
with capacitance probe.
1),2)
No abnormalities
3) The discharge time is
shorter than time speci-
fied by the replacement
manual.
Resistor 1) Check for odor caused by overheating and
cracked insulator.
2) Check for broken wire.
1) Smelling and visual inspec-
tion
2) Visual inspection or mea-
surement with multimeter
under disconnection of one
lead
1) No abnormalities
2) Within ± 10% of
displayed resistance
Transformer
and reactor
Check for abnormal noise or odor. Hearing, visual and smelling
inspection
No abnormalities
Magnetic
contactor
and relay
1) Check for chattering during operation.
2) Check for rough contacts.
1) Hearing inspection
2) Visual inspection
1),2)
No abnormalities
Contr
ol cir
cuit
Printed
circuit board
(Note 1)
1) Check for loose screws and connectors.
2) Check for odor and discoloration.
3) Check for cracks, breakage, deformation and
corrosion.
4) Check the capacitors for electrolyte leaks
and deformation.
1) Retighten.
2) Smelling and visual inspec-
tion
3),4)
Visual inspection
1),2),3),4)
No abnormalities
Cooling system
Cooling fan
(Note 1)
1) Check for abnormal noise and excessive
vibration.
2) Check for loose bolts.
3) Check for discoloration caused by overheat.
1) Hearing and visual inspec-
tion, or turn manually (be
sure to turn the power off).
2) Retighten.
3) Visual inspection
1) Smooth rotation
2),3)
No abnormalities
Ventilation
path
Check the heat sink, intake and exhaust ports for
clogging and foreign matter.
Visual inspection No abnormalities
(Note 1) The judgement level of part replacement interval with Menu #5 Maintenance information is used as a guide.
Determine the replacement interval on the basis of the standard replacement years. (See page 7-8.)
If the drive is stained, wipe it off with a chemically neutral cloth to remove dust, use a vacuum cleaner.
Table 7.1 List of Periodic Inspections
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