Ventilator repair Drager Pulmolog

[aurelleostean]

Hi to all,
I have a very old drager Pulmolog ventilator that i have for some time in the garage, these days of stay at home. I have some parts that i cannot identify if broken or not. Can someone help me with this? the unit worked just fine a year ago.

[Gyro]

Wow, Spaghetti! I wonder how clean all of those tubes are?

(Edit: Although I suspect that they are all pneumatic control lines rather than patient gas though. Even so, that's an incredible unlabeled tangle!)

[aurelleostean]

one of the square valves is not working, after an hour of taping the valves i got it to work again. i do not know witch one to blame

[Gyro]

Unfortunately my pneumatics skills are limited to an old temperamental pick and place machine, years ago, but I suspect that your diagnosis is correct - most likely a rubber diaphragm became 'stuck' to its seating after a year of disuse.

I'm sorry, but without documentation I don't see how you're going to be able to narrow it down which valve. The only thing I can suggest is repeated 'power' cycling and gentle exercise in the hope that it will settle down again to normal operation.

[daisizhou]

It is recommended that you conduct a POST test(I looked at the picture and found that your ventilator is very old, I think it should be enough to test the performance of the mechanical seal)You need air source (air + oxygen) and piping + simulated lung (can be replaced with balloons)