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  1.

    Need Help CET x-press 500 - Negative Pressure pump

    After re-reading your post.... Django makes good points. Mine has two pumps also .... one is the MAIN, and the other the BACKUP pump. I just replaced my main...huge difference --- in the Manometer You may still need to re-set your negative pressure (again - your manual should have a walk...
  3.

    Need Help CET x-press 500 - Negative Pressure pump

    I have a similar cet---only one back up pump----would be nice to have two..... if you need your negative pressure set higher--- once you replace the main pump---make sure you set your negative pressure to zero (0) your manual should walk you through it ---best of luck
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