Chromatography Forum

Hi,

I encountered some problem when I started a new sample set. We have a e2695-2998 system, and Empower2 as the software station.

To start a sample set, the sequence that I use is 1. wet prime 2. purge injector 3.inject blank sample 4. equlibrate 5. inject actual sample. We have been using this sequence ever since we had our first HPLC.

Recently I found that after wet priming, the system failed to do purge injector, and it shows 'purge suspended' on 2695, but there is no error message in the message centre from Empower or in the log. It would just keep idling and consuming mobile phase after showing the 'purge suspended'. In this case I have to aborted the sample set and restarted.

I am not sure if this is a 2695 problem or an Empower problem. What could cause the injector purge suspended?

Thanks for your time and let me know if more information is needed.

Hi,
this to me sounds like a hplc problem. I had the same issue with a non-ethernet Alliance. Changing the internal button cell battery solved the problem.

Hi Carlo,

Thanks heaps for your reply. Correct me if I am wrong, so do you think that this is a battery problem?

Could it also be an instrument problem?

At first I thought that there could be a bubble trapped in the syringe, which caused the injector purge suspension.

Or might the injector, or the syringe need to be replaced, something like that.

Let me know if this is possible. Thanks again for you reply, I really appreciate.

Hi,

this sounds strange but this is a battery problem! I had tried everything including rebooting the machine, priming, rinsing the injection line, etc... before a service engineer came and told me that is a very weird problem caused by batteries. In any case, it's a very cheap repair that everyone can do by himself, so it should be no problem to just give it a try

Hi Carlo,

Thanks so much for your reply. If this is a battery problem, that would make everything easier. I just have never encountered problem like this before. It is nearly PM time, I will change the battery while doing the PM.

Thanks again for the suggestion, I really appreciate

Luhan

Bad 2695 batteries can cause a wide range of weird symptoms. It's easy to confirm with a volt meter whether this is the source of the problem.