Your therapy system is most likely made up of a mask, tubing, therapy device and humidifier.
Take a look at your therapy system to see if you can identify all the parts.
Knowing what to do (and what not to do) when setting up your equipment can make all the difference to your treatment.
Here are some tips from ResMed.
Your care provider or equipment supplier should have shown you how to connect your device and mask. If you’re having any problems, see your product User Guide, which has clear instructions on setting up.
You can also contact your equipment provider for advice.