Invacare Platinum Mobile Oxygen Concentrator
Powers up and states "Warming Up"
Indicates 725 total hours of use
One Battery pack
As far as I can see, its all original in its original box with accessories please see all pictures.
According to the manual "Warming Up" indicates:
Concentrator is producing less than 87% O2 after warm up state. The standard warmup state has a maximum duration of 120 seconds before it becomes a prolonged warm up alarm state. a. Unit running with out cannula connected-or b. Inlet airflow blockage -or c. Outlet filter perforated -or d. Sieve bed has been compromised -or e. Oxygen sensor is not properly calibrated.