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How to run an internal and external leak test on the HG BASIC and HG PRO

Leak testing is a basic troubleshooting step that can help identify the cause of a problem.

  1. Ensure the system is in an OFF state:

    1. Scroll left-to-right to access the "H2 Command" screen.
    2. Ensure the system is stopped by pressing "STOP". If it shows "START OPEN" and "START CLOSE", the system is already in the correct state.
  2. Run an internal leak test:
    1. Navigate back to the summary screen and hold the screen for 0.5 sec to access the Menu.
    2. Scroll left-to-right until the "Tests" option appears. Press and hold the screen for 0.5 sec to enter the Tests menu.
    3. Select "Internal Leak" by pressing and holding the screen for 0.5 sec. The test will be performed and report a pass/fail result.
    4. If it passes, continue to the next step. If it fails, try once more and report back to support@uvison.com.
  3. Run an external leak test:
    1. Make sure there is no demand for H2 from any application (GC, etc.) and that the external line is sealed so it can pressurise!
    2. Navigate back to the "Tests" menu and select "External Leak" by pressing the screen for 0.5 sec. The test will be performed and report a pass/fail result.
    3. If it passes, report back to support@uvison.com. If it fails, it is likely an issue unrelated to the generator. Continue to the next step to confirm.
  4. Eliminate any possibility of a generator leak:
    1. Remove the 1/8" fitting from the rear of the generator and fit a blanking nut. Secure it correctly, taking care not to cross-thread or overtighten.
    2. Re-run the external leak test. If it fails, report back to support@uvison.com. If it passes, the leak is on the gas lines that run from the generator and should be resolved.