NOTE!

  • Leak stopper is an emergency operation (completing a batch despite slight leakage in the system circuit (e.g. Injection molding tool).
  • The flow rate is reduced compared to normal operation due to the reversal of the pump's direction of rotation.
    → It Process monitoring may be necessary to adjust the limits below.
  • The Leak stopper can only be switched on if all temperatures (Main line, Return line and, if available, external) and the temperature setpoints are lower than the [Temperature Limit Leak Stopper] parameter (default setting 70 °C).
    → At operating temperatures above 70 °C, Leak stopper is no longer useful (possible evaporation in the unit); it is no longer possible above approx. 90 °C.
  • The quality of the leak stop function is highly dependent on the size of the leak and the location of the leak. In the worst case, the leakage cannot be stopped 100%.

In Leak stopper, the pump direction switched over to suction. This function can be used temporarily in the event of leaks in the system water circuit (e.g. In the injection mold). In this way, a batch can be finished despite a leaky system water circuit.

Prerequisites

function

The temperature control is in normal operating mode, only the pump sucks the heat transfer medium through the system water circuit. The pressure conditions are automatically set and regulated so that atmospheric pressure prevails during the leakage and therefore no more water escapes. Depending on the location of the leakage and the nature of the system water circuit, the pressure in the Main line is differently higher than the atmospheric pressure. This determines the highest possible flow rate that can be achieved in Leak stopper.

Clip → HB-100Z61_ZL.mp4/HB-140_160Z61_ZL.mp4

  1. On the home basic screen, tap the menu button
  2. Select [Functions] > [Leak Stopper]
  3. Use the slider (, ) to turn the function on or off.
    → The unit controls during normal operation until the venting process is complete. The Leak stopper is then switched on.

NOTE!

Restrictions during Leak stopper:

  • The temperature setpoints cannot be set higher than the [Temperature Limit Leak Stopper] Parameter.
  • auto-tuning cannot be carried out automatically or manual.

Temperature limit setting

To limit the maximum setting value for the temperature setpoints in Leak stopper.

  1. On the basic screen, tap on the profile button
  2. Select [User Profile] and set it to “Maintenance.”
  3. On the home basic screen, tap the menu button

  4. Select [Service] > [Parameter] > [Leak Stopper] > [Temperature Limit leak stopper]

  5. Set the parameter to the desired value