Maintenance; Daily Maintenance; Periodic Maintenance - INVT Goodrive3000 Series Operation Manual

Goodrive3000 series medium voltage VFD
● Maintenance must be carried out in specified methods.
● Only qualified electricians are allowed to perform the maintenance.
● Disconnect all power supplies to the VFD before maintenance. After 25 minutes, ensure the
CHARGE LEDs of all modules are off and the DC bus voltage of the VFD detected by multimeter
is lower than 25V.
● Do not touch the components on the PCB board, otherwise electrostatic discharge may cause
damage to the VFD.
● After maintenance, ensure all screws have been tightened securely.

7.1 Daily maintenance

Daily maintenance of the VFD shall be conducted to avoid faults, ensure normal running and prolong its service life.
Item
Thermometer/hu
midity
Oil fog and dust No oil fog, dust or condensation inside the VFD
VFD
Fan
Input power
Motor

7.2 Periodic maintenance

To avoid faults and ensure the VFD runs smoothly in high performance for a long time, users must inspect the VFD
regularly.
Item
Ambient
environment
Voltage
Display
Casing, cover and
other structural
parts

7 Maintenance

Ambient temperature: -10° C–40° C, humidity: 5%–95%
No abnormal overheat or vibration to the VFD
The fan runs normally and no blockage
The voltage and frequency of input power in allowed range
No abnormal vibration, overheat, noise or phase loss to the motor
Content
1. Check the ambient temperature, humidity,
vibration and atmosphere (including dust, oil
fog and water drops)
2. Ensure there are no tools or other foreign
or dangerous objects
Check the AC voltage and DC voltage are
normal
1. Ensure the display is clear enough
2. Ensure the characters are displayed totally
1. No abnormal noise and vibration
2. No loose fasteners
3. No distortion or crackles
4. No color-changing caused by overheat
5. No dust or other surface adhesive
materials
Content
Method
1. Visual
examination and
instrument test
2. Visual
examination
Multimeter or
other
instruments
Visual
examination
1. Visual
examination
2. Tighten up
again
3. Visual
examination
4. Visual
examination
5. Visual
examination
-190-
Maintenance
Criterion
1. Conform to the
standards
2. There are no tools
or dangerous objects
Conform to the
standards
The characters are
displayed normally
All exceptions are
eliminated