Frenic 5000VG7S Series, Инструкция по эксплуатации

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8-2
Table 8-2-1 Periodical inspection list
Check parts Check items How to inspect Evaluation Criteria
Environment 1) Check the ambient temperature,
humidity, vibration, atmosphere (dust,
gas, oil mist, water drops).
2) Is the area surrounding the equipment
clear of foreign objects.
1) Conduct visual inspection
and use the meter.
2) Visual inspection
1) The specified standard
value must be satisfied.
2) The area is clear.
KEYPAD panel 1) Is the display hard to read?
2) Are the characters complete? 1),2) Visual inspection 1),2) The display can be
read and is not
abnormal.
Structure such as a
frame or cover 1) Is there abnormal sound or vibration?
2) Are nuts or bolts loose?
3) Is there deformation or damage?
4) Is there discoloration as a result of
overheating?
5) Are there stains or dust?
1) Visual and aural
inspection
2) Tighten.
3),4),5) Visual inspection
1),2),3),4),5) Not abnormal
Common 1) Are there loose or missing nuts or
bolts?
2) Are there deformation, cracks,
damage, anddiscoloration due to
overheating or deterioration in the
equipment and insulation?
3) Are there stains and dust?
1) Tighten.
2),3) Visual inspection 1),2),3) Not abnormal
Note: Discoloration
of the bus bar
does not indicate a
problem.
Conductor and
wire 1) Is there discoloration or distortion of a
conductor due to overheating?
2) Are there cracks, crazing or
discoloration of the cable sheath?
1),2) Visual inspection 1),2) Not abnormal
Terminal block Is there damage? Visual inspection Not abnormal
Smoothing
capacitor 1) Is there electrolyte leakage,
discoloration, crazing, or swelling of
the case?
2) Is the safety valve not protruding or
are valves protruding too far?
3) Measure the capacitance if
necessary.
1),2) Visual inspection
3) * Estimate life expectancy
from maintenance
information and from
measurements using
capacitance measuring
equipment.
1),2) Not abnormal
3) Capacitance
³
initial
value x 0.85
Resistor 1) Is there unusual odor or damage to
the insulation by overheating?
2) Is there an open circuit?
1) Visual and olfactory
inspection
2) Conduct a visual
Inspection or use a
multimeter by removing
the connection on one
side.
1) Not abnormal
2) Less than about
±
10%
of the indicated
resistance value
Transformer and
reactor Is there abnormal buzzing or an
unpleasant smell? Aural, olfactory, and visual
inspection Not abnormal
Main
cir
cu
it
Magnetic
conductor and
relay 1) Is there rattling during operation?
2) Are the contacts rough? 1) Aural inspection
2) Visual inspection 1),2)Not abnormal
C
ontrol cir
cui
t
Control PC board
and connector 1) Are there any loose screws or
connectors?
2) Is there an unusual odor or
discoloration?
3) Are there cracks, damage,
deformation, or excessive rust?
4) Is there electrolyte leakage or damage
to the capacitor?
1) Tighten.
2) Visual and olfactory
inspection
3) Visual inspection
4) * Estimate life expectancy
by visual inspection and
maintenance information
1),2),3),4) Not abnormal
Cooling fan 1) Is there abnormal sound or vibration?
2) Are nuts or bolts loose?
3) Is there discoloration due to
overheating?
1) Aural and visual
inspection. Turn
manually (confirm the
power is off).
2) Tighten.
3) Visual inspection
4) * Estimate life expectancy
by maintenance
information
1) The fan must rotate
smoothly.
2),3) Not abnormal
C
oolin
g s
ys
tem
Ventilation Is there foreign matter on the heat sink
or intake and exhaust ports? Visual inspection Not abnormal
Note:
If equipment is stained, wipe with a clean cloth. Vacuum the dust.