V&T E5 Series, Руководство пользователя

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E5 Series High Performance Universal Inverter User’s Manual
132 Chapter 8 Maintenance and Inspection
8.T Periodic Maintenance
It needs to perform periodic maintenance every three to six months according to the application
environment and work conditions.
Item Inspection Contents Inspection Means Criteria
Inverter
Main circuit terminal ScrewdriverTsleeve
The screws are tightened and the
cables are kept well
PE terminal ScrewdriverTsleeve
The screws are tightened and the
cables are kept well
Control circuit terminal Screwdriver
The screws are tightened and the
cables are kept well
Reliability of internal
connections and
connectors
Screwdriver and
hands
Connection is firm and reliable
Expansion card
connector Screwdriver and
hands
Connection is firm and reliable
Mounting screws ScrewdriverTsleeve The screws are tightened
Cleaning the dusts
and powders
Cleaner There are no dusts and wool
Internal foreign matter Visual check There are no foreign matter
Motor Insulation test 500VDC megger Normal
8.3 Component Replacement
Different types of components have different service lives. The service lives of the components are
subject to the environment and application conditions. Better working environment may prolong the
service lives of the components. The cooling fan and electrolytic capacitor are vulnerable components
and should be periodic maintenance. If any fault occurs, the component should be replaced.
Vulnerable
Components
Damage Causes Solutions Items for Routine Inspection
Fan Bearing worn, blade aging Replace
The fan blade has no cracks and rotates
normally. The screws are tightened
Electrolytic
capacitor
High ambient temperature
and electrolyte volatilizes.
Replace
There are no electrolyte leakage, color
change, crack and shell inflation. The
safety valve is normal
Static capacity is equal to or higher than
the initial value *0.85
Note Note
When the inverter is stored for a long time, power connection test should be conducted once within
two years and last at least five hours. It can use voltage regulator to gradually increase the value to
the rated value after power connection is performed.