EBME Forums Forums Maintenance Technical Assistance Anesthesia machine- Drager Primus

I just want to get any idea from all my member. My GA machine modeled, Drager Primus. The problem is the oxygen sensor for this type of model frequently need to be changed. Normally it can withstand until 6 months, but for my asset every month need to be change for it's oxygen sensor.

is it because of the environment or the design itself? I hope anybody can help me to figure out this problems. Thanks

Hi Mammad there are a few reasons I can think of! I am In Saudi Arabia and yes the climate can affect them! First thing is the amount of time they are lying around in transit i.e. sitting in some freight terminal sweltering away! We have found that storing them in a refrigerator on receipt helps maintain their shelf life! Another factor is "exposure to O2 time" It is always wise to purge the Primus (or any other AWS) with air after use! Constant exposure to O2 rapidly deteriorates the cell!

Hope this helps

Eddie

actually eddie, I quite new with this machine. So i am not understand the operation of the machine. can you give me a details on how the machine works. It will be help me a lot...

Thanks I

Hi Mammad, are you unfamiliar with this particular machine or Anesthetic machines in general?

Eddie

Anesthetic machine in general. I was asking to do a report for this machine, so that is why I quite blur about all this thing..

Hi Mammad, I will dig out some stuff and email it to you! Believe it or not these machines are VERY basic! Meanwhile there is a ton of material on the web! I am sure other members will post a link or two! Try studying a block (System) diagram whilst identifying the various parts on the actual machine!

Regards

Eddie

thank you so much... this is my e-mail, muhammadraszeman@yahoo.com

thanks once again...

Your welcome Mammad!

Eddie

You need to check the sensor voltage readings against the service software.
There is also a warranty date stamped on the underneath of these cells if it fails inside the warranty date send it back, you may get free replacement if its a genuine failure.

Hi Karl, The problem we face here! Sensors shipped from Germany and left standing in a crate in the hot sun for weeks before being processed! Drager have replaced them for us in the past but its just a continuous loop! We have the same problem for batteries too!

Hows tricks? All the best for 09!

Ed