Multiple problems can affect centrifugal blowers, but vibrations are one of the more common concerns. While mild vibrations may be not affect the system, larger ones can indicate a serious problem and lead to the need to shut down the machine and make repairs right away. Luckily, there are accepted vibration levels for various speeds, so you can tell whether the system is still safe. If there are excessive vibrations, our centrifugal blower repair experts are likely to find that it is one of the following issues:
- Misalignment of the Shaft- Whenever a new blower assembly is installed or replaced, you need to ensure that the drive motor shaft and fan shaft are aligned correctly. If this doesn’t happen, you will notice harmonic and possibly axial vibration. You are unlikely to notice the axial vibration since most centrifugal blowers don’t have probes in this direction. Misalignment can happen during installation if a bearing is improperly sealed or if a shaft is bent.
- Cracked Rotors and Shafts- A cracked rotor or shaft can cause vibrations, and generally speaking, these can present a serious problem. If you don’t take care of this with centrifugal blower repair, it can lead to a complete failure of the machine and expensive repairs.
- Loose Connections- Sometimes, the mechanical connections will be loose, leading to vibrations and the need for centrifugal blower repair. These loose connections may be in the foundations, bearing pedestals, or bearing caps. They can cause a vibration issue or worsen an existing one.