Omron SYSDRIVE 3G3RV, User Manual

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8
-2
Maintenance and Inspection
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Daily Inspection
Check
the following items with the system in operation.
•
The
motor should not be vibrating or making unusual noises.
• There
should be no abnormal heat generation.
•
The
ambient temperature should not be too high.
•
The
output current value shown on the monitor displays should not be higher than normal.
•
The
cooling fan on the bottom of the Inverter should be operating normally.
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Periodic Inspection
Check
the following items during periodic maintenance.
Always
turn OFF the power supply before beginning inspection. Confirm that the LED indicators on the front
cover
have all turned OFF, and then wait until at least five minutes has elapsed before beginning the inspec-
tion.
Be sure not to touch terminals right after the power has been turned off. Doing so can result in electric
shock.
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Periodic Maintenance of Parts
The
Inverter is configured of many parts, and these parts must be operating properly in order to make full use
of
the Inverter functions.
Among
the electronic components, there are some that require maintenance depending on their usage condi-
tions.
In order to keep the Inverter operating normally over a long period of time, it is necessary to perform
period
inspections and replace parts according to their service life.
Fig 8.1 Periodic Inspections
Item Inspection Corrective Procedure
External
terminals,
mounting
bolts, connec-
tors,
etc.
Are
all screws and bolts tight?
Tighten
loose screws and bolts firmly.
Are
connectors tight?
Reconnect
the loose connectors.
Cooling
fins
Are
the fins dirty or dusty?
Clean
off any dirt and dust with an air gun using
dry
air at a pressure of 39.2 x 10 4 to 58.8 x 10 4 Pa
(4
to 6 kg•cm 2
).
PCBs
Is
there any conductive dirt or oil mist on
the
PCBs?
Clean
off any dirt and dust with an air gun using
dry
air at a pressure of 39.2 x 10 4 to 58.8 x 10 4 Pa
(4
to 6 kg•cm 2
).
Replace
the boards if they cannot be made clean.
Cooling
fan
Is
there any abnormal noise or vibration or
has
the total operating time exceeded
20,000
hours?
Replace
the cooling fan.
Power
elements
Is
there any conductive dirt or oil mist on
the
elements?
Clean
off any dirt and dust with an air gun using
dry
air at a pressure of 39.2 x 10 4 to 58.8 x 10 4 Pa
(4
to 6 kg•cm 2
).
Smoothing
capacitor
Are
there any irregularities, such as dis-
coloration
or odor?
Replace
the capacitor or Inverter.