Periodic Maintenance; Component Replacement - V&T E5-H Series User Manual

8.2 Periodic Maintenance

It needs to perform periodic inspection on the inverter once every three to six months according to the
application environment and work conditions.
Item
Inverter
Motor

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 shall be conducted routine inspection as per the table below. If any fault occurs, please conduct
immediate replacement.
Vulnerable
Components
Fan
Electrolytic
capacitor
Note Note
When the inverter is stored for a long period of time, power connection test shall 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 when power connection is performed.
E5−H High Performance Universal Inverter
Inspection Contents
Main circuit terminal
PE terminal
Control circuit terminal
Reliability of internal
connections and
connectors
Expansion card
connector
Mounting screws
Cleaning the dusts
and powders
Internal foreign
objects
Insulation test
Damage Causes
Bearing wear, blade
aging
Ambient temperature
is relatively high and
electrolyte volatilizes.
Chapter 8 Routine Repair and Maintenance
Inspection Means
Screwdriver/sleeve
Screwdriver/sleeve
Screwdriver
Screwdriver and
hands
Screwdriver and
hands
Screwdriver/sleeve
Cleaner
Visual check
500VDC megameter
Solutions
The fan blade has no cracks and rotates
Change
normally. The screws are tightened.
There are no electrolyte leakage, color
change, crack and shell inflation. The
Change safety valve is normal.
Static capacity is equal to or higher than
the initial value times 0.85.
User Manual
Criteria
The screws are tightened and the
cables are intact.
The screws are tightened and the
cables are intact.
The screws are tightened and the
cables are intact.
Connection is firm and reliable.
Connection is firm and reliable.
The screws are tightened.
There are no dusts and wools.
There are no foreign objects.
Normal
Items for Routine Inspection
113