Yaskawa G5HHP Drive - Manual (Page 327)

10.1 Maintenance and Inspection
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10.1 Maintenance and Inspection
The maintenance period of the Inverter is as follows:
Maintenance Period: Within 18 months of shipping from the factory or within 12 months of being delivered to the
final user, whichever comes first.
10.1.1 Daily Inspection
Check the following items with the system in operation.
D
The motor should not be vibrating or making unusual noises.
D
There should be no abnormal heat generation.
D
The ambient temperature should not be too high.
D
The output current value shown on the monitor display should not be higher than normal.
D
In-panel ventilation fan unit placed at the top of the Inverter Panel should be operating normally.
D
The cooling fan attached to the Module should be operating normally.
Open the door only when checking the cooling fan operation. Do not open the door when not conducting inspec-
tion.
10.1.2 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
door have all turned OFF, and then wait until at least five minutes has elapsed before beginning the inspection.
Be sure not to touch terminals right after the power has been turned off. Doing so can result in electric shock.
Table 10.1 Periodic Inspections
Item Inspection Corrective Procedure
External terminals,
mounting bolts con
Are all screws and bolts tight? Tighten loose screws and bolts firmly.
mounting bolts, con-
nectors, etc. 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 kgScm 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 kgScm 2 ).
Replace the boards if they cannot be made
clean.
Cooling fan, in-panel
ventilation fan unit
Is there any abnormal noise or vibration
or has the total operating time exceeded
20,000 hours?
Replace the cooling fan or in-panel ven-
tilation fan unit.
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 kgScm 2 ).
Smoothing capacitor
Are there any irregularities, such as dis-
coloration or odor?
Replace the capacitor or Inverter Module.
10.1.3 Periodic Maintenance of Parts
The Inverter Panel 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. To keep the Inverter Panel operating normally over a long period of time, it is necessary to perform peri-
od inspections and replace parts according to their service life.
Periodic inspection standards vary depending the Inverter Panel’s installation environment and usage condi-
tions. The Inverter Panel’s maintenance periods are given below. Keep them as reference.
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IMPORTANT