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Agilent 5975C HiVac readings
Posted: Mon Nov 28, 2011 1:38 pm
by LWC
Happy Holidays all,
I have a 5975C that recently has had very poor vacuum readings 0 - 1e10, it used to read 3e-05. The tunes look really good, the tunes pass verification and the GCMS runs look good, so I don't think this is an actual vacuum issue.
Could this be a board, wire or gauge problem? If anyone has ever had this happen let me know so I know which parts to try to replace.
Thank You!
Re: Agilent 5975C HiVac readings
Posted: Mon Nov 28, 2011 3:52 pm
by LCbob
Hi
Not sure what the 0-1e10 is, but if it passes the tune and the air/water is low then it is probably the gauge.
Re: Agilent 5975C HiVac readings
Posted: Mon Nov 28, 2011 6:52 pm
by aldehyde
Yeah run tune evaluation and if that passes your gauge is broken.
Re: Agilent 5975C HiVac readings
Posted: Mon Nov 28, 2011 7:08 pm
by LWC
That's what I thought, just the gauge itself. If someone thinks it's something different please let me know.
Re: Agilent 5975C HiVac readings
Posted: Thu Dec 01, 2011 7:07 pm
by gmlvt
Had the same issue with my 5975C.
Called Agilent and they had me reinitialize the firmware from the key pad.
I do not remember the exact key sequence. Took about 30 seconds.
Give Agilent a call they can talk you through it.
Worth a try before you go any further.
Re: Agilent 5975C HiVac readings
Posted: Mon Dec 05, 2011 1:27 pm
by LWC
I tried reinitializing, not the problem still getting a reading of zero. I'm waiting for some pump oil to come in and I replace the gauge when I complete the PM. If replacing the gauge doesn't turn out to be the problem I'll write back.
Re: Agilent 5975C HiVac readings
Posted: Sat Dec 10, 2011 7:50 pm
by dhan
Check 'LED' color. This should be stable green. If stable 'amber', then you need new gauge.
Dhan