Chapter 9 Maintenance and Inspections | VP3000
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⚫ Main Circuit - Terminal and wiring
Check for any loose or missing screws
If there is any deformed, cracked, or damaged
machinery / insulation, or any color changed due
to overheating and aging.
Check for any dust or dirt
Check for wiring insulation damage or color
changed
⚫ Main Circuit - Filter Capacity
Check for any leakage of liquid, color changed,
cracking or deformation
Check if the safety valve is not removed or is
obviously expanded
Measure the static capacity when required
Measure with equipment with
standard specifications
⚫ Main Circuit - Transformer and Reactor
Check for any abnormal vibrations or peculiar
odors
Visual and auditory inspection
⚫ Main Circuit - Electromagnetic Contactor and Relay
Check for any vibration sounds
If the contact works correctly
⚫ Control Circuit - PCB and Connector
Check for any loose screws and connectors
Check for any peculiar odors or color changed
Visual inspection and smell
Check for any cracking, damage, deformation or
corrosion
Check for any leakage of liquid or deformation in
the capacitors
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