The Machine Knob UI for Philip Respironics PR Machines is the small, round knob on top of the Philips Respironics PR System One CPAP and BiPAP Machines. This knob turns the machine on and off and is used in setting the machine.
PR System One 50 Series Knob
Medium gray in color
Clear plastic rim around the edge
Sides are straight up and down
Sides are smooth, they are not ridged for grip
PR System One 60 Series Knob
Dark gray in color
Silver inlay around the rim
Sides are flared out
Sides ridged to offer a grip of the knob
We have found that the metal ring inside of the knob connection can sometimes be separated and left on the knob post of the machine. When installing the new knob on your machine, first check to see if the post has a small metal ring stuck to it. The design can only use one ring. The presence of an extra ring will impact installation and cause difficulties. The best solution is to either remove the ring from the replacement part or remove the ring from the knob, and then attempt installation.
While you may find the information provided on this site helpful, please understand that it is not in any way intended to replace
the advice of a physician or medical professional. If you're concerned about your health or worried about specific symptoms,
please consult a doctor. If you have additional questions about our site, please consult our
for more information.