Alpha 6000S series - Storage and Protection

Chapter 8 Maintenance
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carried out for internal electronic elements of the frequency inverter. The life of these electronic elements varies
with the environment and conditions where the inverters are used. Generally, if the inverter is used continuously,
the elements can be replaced according to the following table, which also depends on the use environment, load
conditions and inverter state, and other specific conditions.
As showed in Table 8-4, the maintenance term is just for reference by the user when it is used.
Table 8-4 Replacement Time for Wearing Elements of Frequency Inverter
Name of Element Standard Years for Replacement
Cooling Fan 2~3 years
Electrolytic Capacitor 4~5 years
Printed Circuit Board 5~8 years
Fuse 10 years
8.2 Storage and Protection
If the frequency inverter is not used immediately after purchased and has to be stored temporarily or permanently,
the following should be done:
 It should be put in the place within the specified temperature & humidity scope, without damp, dust and metal
dust, and with good ventilation.
 If it is unused for over one year, the charging test should be conducted to restore the characteristics of
electrolytic capacitor of the main circuit. During charging, the input voltage of the frequency inverter should
be increased to the rating value slowly with the voltage regulator. The energizing time should be at least 1~2
hours.
 The above test should be conducted at least once a year .
The voltage withstand test cannot be conducted freely, as it will reduce the life of frequency inverter and even
damage the elements. For the insulation test, the 500V mega-ohmmeter whose insulation resistance is not less
than 4 MΩ can be used.