Degasser Spits out Solvent

[sga]

Hallo Friends,

My 1100 Degasser starts up by make some noises and eventually dies out making sputtering noises and spitting out the solvent from the black colored nozels in the front.

I have tried to completely flush the system with ISO-prop before starting the degasser ( all 4 lines), however no help.

I got this module (not new) a few months back and as far as I remember, I didn't have this issue in the beginning. Has any one faced a similar issue before ?

Any suggestions on how to fix it would be highly appreciated.

I have read other posts on similar issues, but could not find any satisfactory answers.

Regards

SG

[scottythree]

Probably one or more of your four degasser chambers has gone bad. You now have mobile phase in your chamber, running through your tubing, going through the valve and through the internal chambers of you pump. What is the indicator light showing after 10 or so minutes of the degasser being on (green, yellow or red)?

[sga]

red !

[scottythree]

You can still purchase the degasser internals parts from Agilent. Since you have liquid coming out you know the vacuum chamber itself has a leak so I would start there. I would pull off all the black tubing and give it a good washing inside and allow to dry (assuming you have been using buffers. If your degasser is loud for the first 10-15 seconds and then clicks and starts to be quieter then the valve is probably still functional (the click is the valve opening which allows the pump to start pulling the vacuum). On the vacuum pump itself you can unscrew the the pieces on the side where the tubing connects. You can try to clean the inside plastics and rubber flaps. If buffer crystals have built up too much on the inside though this may tear the rubber pieces (may need new pump).

I have successfully pieced together a vacuum chamber from using another leaky one (chances are only one chamber out of four is leaking so if you have more than one degasser that have failed and kept it for parts...) You can probably source the tubing for much cheaper at an autoparts/hardware store.

Things aren't cheap at Agilent. Current Parts and prices from Agilent's site (for the G1322 degasser).
G1322-60003 Solenoid valve, G1322A 503.13 USD
G1322-67300 4/pk Tubing Kit-degasser to Pump 47.25 USD
G1322-60001 Vacuum chamber, G1322A 2,156.58 USD
G1322-60000 Vacuum pump, G1322A 689.97 USD
G1322-60002 Vacuum tube, G1322A 181.22 USD

[bisnettrj2]

You may want to inquire as to whether Agilent still has its "Bench Repair" service available. I've had good luck in the past sending them instruments with problems and getting them fixed for a flat rate. For example, if you know it's a bad vacuum chamber, then that's $2000. The bench repair is likely less than that, so you can send it in, get that fixed, and they'll make sure nothing else is damaged in the process. This, IIRC, also gives you a bit of a warranty period on the repair in case it fails. If you aren't comfortable gutting the degasser and rebuilding it from the ground up, you might try this route.