Can’t figure out chiller circulation on DLSB 30L-30C

Hey everyone I have a 20L rotovap set up - I got it with a cracked bottom condenser coil. I’m not sure what I did and I can’t find any instructions. As far as I can tell the machine is working perfectly fine but it just won’t circulate the fluid. It chilled down to -30 just fine. Not sure what the issue is but I need it to circulate

Gotta turn on the recirculating pump.

I have the 5/10 version.

Take a 2’ piece of tubing, connect in and out. Then run. Directions say you need to prime it.

Yea it didn’t come with instructions - I looked up a different models manual.

I’m sitting 1’ from my 5/10 chiller and 10’ frommthe directions. I’ll be on here for a bit more if you need some help.

I bought the smallest model 5 -20 and the circulation pump came on for 5 seconds before it died. Took 2 and a half months to get it repaired and reimburse d by lab1st.

Try looping the in and out with a 2’ piece of tubing. Fill reservoir, turn on and see what happens.


Awesome thanks everyone I got it figured out - I had to flip the breaker and reset the PA value.