Out Work

Have you replaced any part of the machine?

Do you know perfom leak test to the machine?

Would need more information to help diagnose your problem, but you may have a vent failure. Drager can give you possible problems if you have a vent failure code. A number other than all zero's in the real time values screen. I have seen a common problem with the servo motor (vent piston drive) sensor going bad, but it could be another of several different possible problems. The real time values screen is a good starting point for troubleshooting.