Shrill/High-pitched noise coming from degasser

[Roxanne42]

About a week ago, the degasser on our Agilent 1100 system started making this really shrill noise when going on (I mean, it always produced a noise, but never like this - it's pretty much unbearable at the moment!). Any idea what could be causing it? We primed all the channels manually with isopropanol, followed by their respective solvents...


Thank you,

Roxanne

[Jumpshooter]

Power off the instrument, the pump, the degasser, then re-power it back on. System likely needs to be re-set.

[Roxanne42]

No, that didn't do it.

I had someone take a look this morning and it would appear that the vacuum pump is slowly heading towards failure. :/

We'll drive it until it's gone.

[Jumpshooter]

Well that sounds like my old used car, the mechanic said that the tranny will eventually go out--but it keeps on working (though grudgingly at at times) but since it is paid for --I'll drive it into the ground--do the same for your LC pump. Hopefully you can purch a new pump/degasser unit or find one inexpensively soon.

[bisnettrj2]

The vacuum pump for the 1100-series degassers is part # G1322-60000, and it's $571 on the Agilent site. Alternatively (and since testing an Agilent degasser is a pain in the @$$), you could opt for the Agilent bench repair service for about $1700 (if I remember correctly) if you're not certain of the exact part in the degasser that failed. It beats buying all the innards and gutting it, pricewise, but not time-wise - normally takes a week-and-a-half to 2 weeks to ship it to them and get it back from them.

Here's the parts overview for the G1322 degasser - the pump is the same for the G1379.

http://www.chem.agilent.com/Library/Sup ... A03683.pdf