Hi, we have the same problem with the same system =) We'll have a maintenance of the spray dryer, so I'll try not to forget to let you know if that helped!

I posted this question on this forum quite some time ago and no one else seems to have the same problem except us. It would be much appreciated if you could share your experience with the maintanence of the system.

Cheers

Hello Alen, so we had our spray dryer checked last week and it seems that it helped (but I didn't try so far anything else than water). We had problem with the most inner part of the nozzle and with the cap that you put on as first when you assemle the whole nozzle. Thus the nozzle's inner part was not symetrically positioned in the cap where it comes into conntact with the atomizing gas. Regards, Katerina

The pressure at the nozzle is too low, and it makes it spit. Need to increase it by- Increase delta T, Feed pump setting or change the nozzle and swirl chamber. 

I know it is too late but just to help others searching for the same problem. 

This seems to me that either something is wrong with the nozzle or the feed rate or atomizing pressure is too low. Trying to play around with these two factors. There may be also the chance of clogging in the nozzle. If you have an spare nozzle check it with the same operating conditions and compare the outcome. 

At the end if none of these worked for you, check with Buchi there may be something more serious than operational conditions.