To adjust the start pressure of the ramp on your Z1:

1. With the Z1 is in standby mode, press and hold the Down Arrow Button for approximately

3 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 3 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.