VB5N series inverter
87
6 Maintenance
6-1. Maintenance
Environment effections such as ambient temperature, humidity, fog, internal component aging and other factors will give
rise to the occurrence of potential faults. Therefore, it is necessary to daily check and routine maintain the inverters.
6-1-1. Routine maintenance
Please confirm the following items when start the inverter.
(1) If there is abnormal noise and vibration with the motor.
(2) If the inverter and motor heat unusually.
(3) If the environment temperature is too high.
(4) If the value of load amperometer is as usual.
(5) If the fan of inverter can operate normally.
6-2. Periodical care and maintenance
6-2-1.Periodical care
Before checking and maintaining the inverter, please make sure that the inverter is power off, monitor has no display con-
tent and the indication lamp of main circuit power is off.The checking contents are shown in Tabel 6-1.
Table 6-1 periodical maintenance
The screw of main circuit terminals,
control circuit terminals
Tighten the screws with screw drivers
Use dry compressed air with 4~6kgcm
2
pressure
Use dry compressed air with 4~6kgcm
2
pressure
There is abnormal noise, vibration, or if it has run for
more than 20 000 hours.
Use dry compressed air with 4~6kgcm
2
pressure
Aluminium electrolytic capacitor
If it has changed color, particular smell or bubble
Change aluminium electrolytic capacitor
6-2-2. Periodical maintenance
To make the inverter work normally for long time, periodical care and maintenance for inverter’s internal electronic com-
ponent should be done. The electronic component’s lifetime depends on their application environment and preservation.
The reference lifetime are shown in table 6-2:
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