Chapter 9 Maintenance and Inspections | VP3000 
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9-1 Maintenance and Inspections 
Stop the drive operation, turn off the power and remove the cover before the maintenance. Even if the 
power has been turned off, a charge may still remain in the filter capacitors with hazardous voltages 
which takes a certain time to discharge. To avoid danger, strictly follow the waiting time mentioned in the 
precautions after the drive is powered off before performing the inspection. 
⚫  Ambient Environment 
Check the ambient temperature, humidity, 
vibration and if there is any dust, gas, oil or water 
drops. 
Visual inspection and 
measurement with equipment 
with standard specifications 
Check for any dangerous objects in the 
surroundings 
If the voltage of the main circuit and control 
circuit are correct 
Measure with multi-meter with 
standard specifications 
If the display is clear for reading 
If there is any missing characters on the display 
Check for any abnormal sounds or vibrations 
Visual and auditory inspection 
Check for any loose screws 
Check for deformed or damaged parts 
Check for any color changed due to overheating 
Check for any dust or dirt