HRC • HAS • HAR Series Sealless Centrifugal Refrigeration and Absorption Bearing Monitor Features

Bearing wear and Rotation indicators

Panel or Pump body mount

MTH Bearing Monitors take the guess work out of operating a canned motor pump. They continuously monitor the direction of rotation and critical running clearances between the stator and the rotor.

This bearing monitor system not only monitors the running clearance but also indicates bearing condition. This allows the operator to plan in advance for pump maintenance.

The bearing monitor operates on the principle of induced voltage. A magnetic field is created in the monitor coils by the current flowing through the stator winding. When the rotor is perfectly centered in the stator, the magnetic fields are essentially concentric and balanced. When bearing wear or unequal running clearance occurs, and the rotor drifts off center, the flux created by the imbalance in the magnetic fields induces a voltage in the monitor coils. This voltage is displayed on the monitor volt meter as an indication of bearing condition. The meter is mounted on the pump terminal box as standard, but is also available in a remote panel mount package by customer request.