
Goodrive350-19 series VFD for crane
Maintenance
-401-
9.3 Cooling fan
The service life of the cooling fan of the VFD is more than 25,000 hours. The actual service life of the
cooling fan is related to the use of the VFD and the temperature in the ambient environment.
You can view the running duration of the VFD through P07.14 (Accumulated running time).
The increase of the bearing noise indicates a fan fault. If the VFD is applied in a key position, replace
the fan once the fan starts to generate unusual noise. You can purchase spares of fans from INVT.
Cooling fan replacement:
Read Safety precautions carefully and follow the instructions to perform
operations. Ignoring these safety precautions may lead to physical injury or
death, or device damage.
1. Stop the VFD, disconnect the AC power supply, and wait for a time no shorter than the waiting
time designated on the VFD.
2. Open the cable clamp to loose the fan cable (for the 380V 1.5
–30 kW VFD models, the middle
casing needs to be removed).
3. Disconnect the fan cable.
4. Remove the fan with a screwdriver.
5. Install a new fan in the VFD in the reverse steps. Assemble the VFD. Ensure that the air direction
of the fan is consistent with that of the VFD, as shown in the following figure.
Rotating direction
Air direction
Air
direction
Figure 9-1 Fan maintenance for 7.5 kW and higher
6.
Power on the VFD.