SHENZHEN INVT ELECTRIC CO., LTD. CHV160 Operation Manual
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8. Maintenance
Maintenance must be performed according to designated
maintenance methods.
Maintenance must be performed by qualified people.
Prior to maintenance, the power supply of inverter must be
cut off for ten minutes.
DO NOT directly touch components or devices on PCB board,
otherwise inverter can be damaged by electrostatic.
After maintenance, all screws must be tightened.
8.1 Daily Maintenance
It is necessary to do daily maintenance to avoid inverter fault, ensure failure free operation
and extend the inverter’s service life. The following table shows daily maintenance contents,
Check Item
Content
Temperature/Humidity
Ensure the environmental temperature is between 0
50
, and
humidity is between 20
90%
Oil mist and dust
Ensure there are no oil mist and dust in the inverter.
Inverter
Inspect the inverter to ensure whether there are abnormity heat and
vibration.
Fan
Ensure the fan is running well, there is nothing inside to block it.
Input Power
Ensure the input power voltage and frequency are in allowed range.
Motor
Inspect the motor to ensure whether there are abnormity vibration and
heat or not, whether there are abnormity noise and phase failure or not.
8.2 Schedule Maintenance
User must inspect the inverter periodically (within half year) to ensure it can be operated
for a long time and avoid any failure. Following table indicates the inspection content,
Inspection Item
Inspection Content
Solution
Screw of external
terminal
The screws are loose or not.
Tighten up
PC Board
Dust, Dirty object
Clean it by dry compressed air
Fan
Abnormity noise and vibration,
cumulative time is over 20,000
hours or not.
Clean it.
Replace the fan.
Electrolytic
Capacitor
color changed or not, is there any
peculiar smell.
Replace electrolytic capacitor.
Heat Sink
Dust, dirty object
Clean it by dry compressed air.
Power Components
Dust, dirty object
Clean them by dry compressed air.
8.3 Replacement of wearing parts
The fans and electrolytic capacitors are wearing parts, please make periodic replacement
to ensure long term, safety and failure-free operation. The replacement periods are as follows,
Fan: must be replaced when using up to 20,000 hours
Electrolytic Capacitor: must be replaced when using up to 30,000
40, 000 hours.
WARNING
