Greenheck Fan PVE-35, PVE-55, PVE-20, PVE-45 manual Vibration

Wheel Unbalance

Drive Pulley Misalignment Incorrect Belt Tension Bearing Misalignment Mechanical Looseness Faulty Belts

Drive Component Unbalance Poor Inlet/Outlet Conditions Foundation Stiffness

Vibration

Excessive vibration may be experienced during initial start-up. Left unchecked, excessive vibration can cause a multitude of problems, including structural and/or component failure. The most common sources of vibration are listed.

Many of these conditions can be discovered by careful observation. Refer to the Troubleshooting section of this manual for corrective actions. If observation cannot locate the source of vibration, a qualified technician using vibration analysis

equipment should be consulted. If the problem is wheel unbalance, in-place balancing can be done.

Generally, fan vibration and noise is transmitted to other parts of the building by the ductwork. To eliminate this undesirable effect, the use of heavy canvas connectors is recommended.

Model PVe Heat Recovery Unit 21