Cooling Fan - Kruger Ecowatt K320 Series Operation Manual

Ecowatt Drive K320 series
®

8.3 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 spare parts of
fans from Kruger.
Cooling fan replacement
 Read the safety precautions carefully and follow the instructions to perform
operations. Otherwise, physical injuries or damage to the device may be
caused.
1. Stop the device, 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 loosen the fan cable (for 1.5–30kW VFD models, the middle casing
needs to be removed).
3. Remove 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 Figure 8-1.
6. Power on the VFD.
Air
direction
Figure 8-1 Fan maintenance for 011P and higher models
Rotating direction
-273-
Maintenance
Air direction