While holding those two buttons down hit the power button to enter the setup mode. If you can show me such a law, I'll give you a one-year free membership on Apnea Board. Supply power to the device: first, plug the socket end of the AC power cord into the power supply. For a detailed explanation of how to determine the optimum pressure on your CPAP machine, click here. Before changing your pressure settings on your Respironics CPAP machine, ask your doctor or sleep clinician to try a different type of mask. The plus and minus buttons adjust the increments. (note: the right dial, not the left). Take control of your Sleep Apnea, and be safe. LIMIT: Two (2) Clinician Manuals per individual. Location: Ohio, USA, Machine: Resmed Aircurve 10 VAuto Press up arrow for setup. I recommend you try using the machine with ramp off and see if the pressure is a problem or not for starting out. Puritan Bennett GoodKnight 420 Series: Make sure the CPAP machine is plugged in, then find the secret button beneath the "Go" in the word GoodKnight which appears just above the LCD screen.