Agilent 5975C HiVac readings

[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!

[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.

[aldehyde]

Yeah run tune evaluation and if that passes your gauge is broken.

[LWC]

That's what I thought, just the gauge itself. If someone thinks it's something different please let me know.

[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.

[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.

[dhan]

Check 'LED' color. This should be stable green. If stable 'amber', then you need new gauge.

Dhan