7693A Autosampler Failure Codes

Question

Lately, an Agilent 7693A autosampler (model G4513a) intermittently shows error codes. Does anyone know where to find a list of error codes / failure codes? I cannot find any Agilent document with these codes and possible corrections. 
 
 Status Screen: ALS Failure State: Preparing Samples ALS Failure Code 245: Autosampler front tower plunger error 
 
 Last time the ALS threw a code, I performed troubleshooting by swapping out cables and towers between our two GC systems. The other GC tower worked on this system, and visa versa. After all the swapping and turning GC system off/on, the code eventually went away. Not sure why. 
 
 The tower intializes the same as the identical one on another GC system. The green Ready light is on. The instruments and computer have all been cycled off/on. 
 
 Any advice will be greatly appreciated.

james_jenkins · Answer

Hi msanders, I havent found a comprehensive list of errors. The plunger error could be a stiff plunger on the syringe, if you have replaced/ eliminated that as a cause, then its possible the plunger motor is at fault on the ALS and needs to be replaced. Regards James

vadfs1 · Answer

We periodically see the plunger error message here as well. Usually, it's a syringe that needs to be cleaned or replaced due to it's action feeling rough or just stuck. Occasionally, we get the same message when the syringe is new/clean and the autosampler tower error continues to occur with multiple "retry" commands. On these instances I first try changing the ASV cap. If this doesn't resolve the issue, I've then swapped out the ASV itself for a new one. Usually that fixes the issue. Unfortunately, I haven't been able to identify the exact problem with the ASV/cap when this happens because it visually appears to be normal. It does seem that this happens most often with ASV's sealed with metal crimp caps, especially those containing glass inserts.

CMZainea · Answer

Hello msanders , 
 
 Unfortunately we don't have a comprehensive list of codes that we can share. 
 For 7693A (G4513A) autosampler errors, we recommend contacting Agilent Technical Support for bench repair of the sampler. 
 
 As for the plunger error, I would assume, due to the age of the post, that this was resolved one way or the other. But, for future reference, a good way to verify if the plunger error is the syringe or the motor do the following: Remove the syringe from the autosampler, close the door and run a sample/sequence as usual. If you still get a plunger error, it's the motor. For that, please follow the process mentioned above.

7693A Autosampler Failure Codes

Top Replies