GE AF-300 P11 User Manual page 111

Area to Check
Environment 1) Check the ambient temperature, humidity,
vibration, atmosphere (dust, gas, oil mist,
water drops).
2) Is the area surrounding the equipment free of
foreign objects.
Voltage Are the voltages in the main circuit and the
control circuit normal?
Keypad panel 1) Is the display hard to read?
2) Are the characters complete?
Structure 1) Is there abnormal sound or vibration?
(frame or cover) 2) Are nuts or bolts loose?
3) Is there deformation or damage?
4) Is there discoloration as a result of overheat-
ing?
5) Are there stains or dust?
Common 1) Are there loose or missing nuts or bolts?
2) Are there deformations, cracks, damage, or
discoloration due to overheating or deteriora-
tion in the equipment and insulation?
3) Are there stains and dust?
1) Is there discoloration or distortion of a
Conductors
and wiring conductor due to overheating?
2) Are there cracks, crazing or discoloration of
the cable sheath?
Terminal block Is there damage?
Smoothing 1) Is there electrolyte leakage, discoloration,
capacitor crazing, or swelling in the case?
2) Is the safety valve not protruding, or are
valves protruding too far?
3) Measure the capacitance if necessary.
Resistor 1) Is there any unusual odor or damage to the
insulation by overheating?
2) Is there an open circuit?
Transformer Is there abnormal buzzing or an unpleasant
and reactor smell?
Magnetic 1) Is there a rattling noise during operation?
conductor 2) Are the contacts rough?
and relay
Control PC 1) Are there any loose screws or connectors?
board and 2) Is there an unusual odor or discoloration?
connector 3) Are there cracks, damage, deformation, or
excessive rust?
4) Is there electrolyte leakage or damage to the
capacitor?
Cooling fan 1) Is there abnormal sound or vibration?
2) Are nuts or bolts loose?
3) Is there discoloration due to overheating?
Ventilation Is there foreign matter on the heat sink or intake
and exhaust ports?
See additional notes on following page.
Items to Check
8-2
How to inspect
1) Conduct a visual inspection and use
appropriate meters.
2) Visual inspection
Measure with a multi-meter.
1) Visual inspection
2) Visual inspection
1) Visual and aural inspection
2) Tighten
3), 4), 5) Visual inspection
1) Tighten.
2), 3) Visual inspection
1), 2) Visual inspection
Visual inspection
1), 2) Visual inspection
3) *Estimate life expectancy from
maintenance information and from
measurements using capacitance
measuring equipment.
1) Visual and olfactory inspection
2) Conduct a visual inspection or use a
multi-meter by removing the connection
on one side.
Aural, olfactory, and visual inspection
1) Aural inspection.
2) Visual inpection.
1) Aural inspection.
2) Visual and olfactory inspection
3) Visual inspection
4) *Estimate life expectancy by visual
inspection and maintenace information
1) Aural and visual inspection. Turn
manually (confirm the poewr is off).
2) Tighten.
3) Visual inspection
4) *Estimate life expectancy by mainte-
nance information
Visual inspection
Data subject to change without notice 7/07. © 2007 GE Drives
Evaluation Criteria
1) Results comply with all
standard specifications.
2) The area is clear.
Results comply with all
standard specifications.
1), 2) The display can be
easily read and characters
are normal.
1), 2), 3), 4), 5)
No abnormalities
1), 2), 3) No abnormalities
Note: Discolorationof the
bus bar does not
indicate a problem.
1), 2) No abnormalities
No abnormalities
1), 2) No abnormalities
3) Capacitance is within
85% of initial value
1) No abnormalities
2) Less than about ±10%
of the indicated
resistance value
No abnormalities
1), 2) No abnormalities
1), 2), 3), 4)
No abnormalities
1) The fan must rotate
smoothly.
2), 3) No abnormalities
No abnormalities