9. Low Flow Cutoff

     Sets the low flow cutoff function.
     There are two kinds of low flow cutoff.
      -- Low flow cutoff: Shuts off output
         when the flow rate is smaller than
         the set value.
      -- DP cutoff: Shuts off output when
         the PP is smaller than the set value.
         To change the cutoff settings, tap
         [Modify settings].