Tag Archives: overheatiing

VFD Preventive Maintenance!

Several Variable Frequency Drives (VFDs) were sent into Deltas’ shop for repair. The clients’ complaint for them was that they were failing with an “Overtemp” fault. This is a very common fault/failure on all brands of VFDs. With only a … Continue reading

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Triple Threat Failure

As you can see, this small VFD has failed. Quite spectacularly too!  This small unit had not been properly maintained. It had a blocked and failed cooling fan plus a loose power lead. This caused the unit and terminal to … Continue reading

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Buss Capacitors are a heat related casuality.

These capacitors were removed from a failed VFD. The cooling fans had failed and the unit was running very hot. These capacitors failed violently, as you can see from the photos.  This repair was compounded by the fact that the … Continue reading

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