GE Fuji Electric AF-300 Mini Startup Manual page 96

Check part Check item
Structure such as 1) Abnormal noise and excessive vibration
frame and cover 2) Loose bolts
3) Deformation and breakage
4) Discoloration and deformation caused by
overheat
5) Check for dirt and dust.
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.
Conductor 1) Check the conductor for discoloration and
and wire distortion caused by overheat.
2) Check the sheath of the cable for cracks and
discoloration.
Terminal
Check that the terminals are not damaged.
block
Filtering 1) Check for electrolyte leakage, discoloration,
capacitor cracks and swelling of the case.
(Note 1) 2) Check if the safety valve does not protrude
remarkably.
3) Measure the capacitance if necessary.
Resistor 1) Check for odor caused by overheating and
cracked insulator.
2) Check for broken wire.
Transformer Check for abnormal noise or odor.
and reactor
Magnetic 1) Check for chattering during operation.
contactor 2) Check for rough contacts.
and relay
Printed 1) Check for loose screws and connectors.
circuit board 2) Check for odor and discoloration.
(Note 1) 3) Check for cracks, breakage, deformation and
corrosion.
4) Check the capacitors for electrolyte leaks
and deformation.
Cooling fan 1) Check for abnormal noise and excessive
(Note 1) vibration.
2) Check for loose bolts.
3) Check for discoloration caused by overheat.
Ventilation Check the heat sink, intake and exhaust ports for
path clogging and foreign matter.
(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
How to inspect
1) Visual and audible inspec-
tion
2) Retighten.
3), 4), 5)
Visual inspection
1) Retighten.
2), 3)
Visual inspection
1), 2)
Visual inspection
Visual inspection
1),2)
Visual inspection
3) Measure discharge time
with capacitance probe.
1) Smelling and visual inspec-
tion
2) Visual inspection or mea-
surement with multimeter
under disconnection of one
lead
Hearing, visual and smelling
inspection
1) Hearing inspection
2) Visual inspection
1) Retighten.
2) Smelling and visual inspec-
tion
3),4)
Visual inspection
1) Hearing and visual inspec-
tion, or turn manually (be
sure to turn the power off).
2) Retighten.
3) Visual inspection
Visual inspection
7-2
Evaluation criteria
1), 2), 3), 4), 5)
No abnormalities
1), 2), 3)
No abnormalities
1), 2)
No abnormalities
No abnormalities
1),2)
No abnormalities
3) The discharge time is
shorter than time speci-
fied by the replacement
manual.
1) No abnormalities
2) Within ± 10% of
displayed resistance
No abnormalities
1),2)
No abnormalities
1),2),3),4)
No abnormalities
1) Smooth rotation
2),3)
No abnormalities
No abnormalities