1. With the Z1 is in standby mode, press and hold the Down Arrow Button for approximately three seconds until the 4.0 (or another pressure reading) begins to flash.
  2. While the start pressure value is flashing, repeatedly press either of the Up/Down buttons to increase or decrease the start pressure.
  3. When the desired ramp start pressure is reached, press and hold the Start/Stop Button for approximately three seconds to save your setting (this setting will be saved even when the Z1 is not powered). The Z1 will return to standby mode.

NOTE: To return to standby mode without saving the new setting, press and release the start/Stop button momentarily instead of holding it down.

You can also easily change the ramp pressure of your Z1 Auto via the Nitelog app.