TIP

If leakage is observed around the purge valve knob (when the purge valve is open) or on the purge outlet (when the purge valve is closed), the purge valve knob may be defective (see Replacing the Purge Valve Knob).

When

The leak sensor is wet. The leak sensor reports leakage.

If leakage is not resolved after 3 minutes, the pump stops the flow.

Parts and additional items required

  • Replacement part as required

  • Cloth or tissue

Preparations

When resolving leakage, observe the safety guidelines and general rules for maintenance and service as presented in Maintenance and Service.

Follow these steps

  1. Locate the source of the leak.

    As leakage usually occurs at a connection, visually inspect all components and connections in the flow path.

    The following tests can help you to identify the source:

    After taking remedial action as required, proceed with the next steps.

  1. With a cloth or tissue, thoroughly absorb all liquid that has collected in the leak tray and under the leak sensor. Be careful not to bend the sensor.

  2. Allow the sensor to adjust to the ambient temperature for a few minutes.

  3. If leakage is no longer reported, you can resume operation.