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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: agartnet on August 15, 2007, 10:27:08 AM

Title: GC-MS INlet Pressure Problem
Post by: agartnet on August 15, 2007, 10:27:08 AM

Hi all,

I have a problem with a 5890 series II GC where the electronic pressure program (EPP) is not working. It had been working fine, but recently it says "EPP not installed", and I was wondering if anyone has any ideas what the problem is and any possible ways to fix it. This also disables the flow reading on the instrument.
Thanks

Title: Re: GC-MS INlet Pressure Problem
Post by: Mr Peanut on August 15, 2007, 05:04:55 PM

Call the 800 number. I have always had good results with this approach. (But, be nice or they may charge you.)

Title: Re: GC-MS INlet Pressure Problem
Post by: agartnet on August 16, 2007, 02:27:58 PM

I did and they were less than helpful...they basically told me that my instrument was old, none of the parts were made or serviced anymore and that I'd have to look second hand to repair it, even though the engineer couldn't even tell me the exact problem

Title: Re: GC-MS INlet Pressure Problem
Post by: Mr Peanut on August 16, 2007, 07:12:14 PM

Sorry

Yea, I’ve heard that myself. Once in a while you get someone helpful.

My approach has always been to take the entire thing apart and then reassemble it. Most of the time this either reveals the problem or it simply, mysteriously fixes it.