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Instrument never get ready and always in equilibrating stage

avatar: Zeni
Zeni
3 posts
Replied to Zeni's post on July 5th, 2018

Hi,

I am suing GC varian CP 3800 with an autosampler CP 8400. I am having problem which the isntrument never gets ready and always in equilibrating stage even though there's no fault reported. All the parameter have reached the set points (injector, column oven, and detector temperature, flowrate and pressure), but the GC always says "not ready). Therefore i can't do any injection. Any suggestion for that case?

Thank you very much in advance.

 

avatar: Dan Ste.Marie
Dan Ste.Marie
445 posts
Replied to Zeni's post on July 5th, 2018
Something's not at it's appropriate set point. Press the status button and then scroll through all the setpoints for the GC using the page up and page down buttons the little double arrows. Look for one where it's not at the appropriate set point. The other thing to check is how long is your oven equilibration time. If it is set to be an excessive amount more than 30 seconds it is likely that something is varying slightly and causing it to go continually out of equilibration
avatar: Zeni
Zeni
3 posts
Replied to Dan Ste.Marie's post on July 31st, 2018

I have checked all the status, all seems fine. The temperature, the gas flow etc, even the oven equilibrating time. There must be something not right, but i don't know  which part as the software also saying "no faults". Any further suggestion would be appreciated.

 

Thank you

avatar: Dan Ste.Marie
Dan Ste.Marie
445 posts
Replied to Zeni's post on July 31st, 2018

Zeni,

If you exit the software, does the GC go to a ready state?

 

Dan

avatar: Zeni
Zeni
3 posts
Replied to Dan Ste.Marie's post on August 1st, 2018

Hi Dan,

yes i did that and it's still the same, giving not ready sign. I even reinstalled the software twice.

Zeni

avatar: Dennis Connor
Dennis Connor
4 posts
Replied to Zeni's post on September 27th, 2019

Was there ever a fix for this problem? We started a few days ago to see Not Ready even though everything is at set point.  We had not made any changes just before that.

We have two columns installed with their own injection ports and detectors.  We can use one but not the other because of Not Ready on the flow for the column not in use for that method.

Help!

 

avatar: Dennis Connor
Dennis Connor
4 posts
Replied to Dennis Connor's post on September 27th, 2019

Success!  I tried the Autocalibrate function in Instrument Edit Setup on the GC itself and after 5 to 10 minutes of "Calibrating . . ." according to the screen, it rebooted and worked again with no Not Ready light staying on.