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Post by hungviet on Jul 8, 2024 1:12:57 GMT -5
Hello everyone,
I use model CCS-400H/204. The closed-cycle refrigerator had the vacuum leak. The pressure in the sample space only decreased to 7x10^(-3) torr after I turned on the turbo pump in vacuuming the sample space. My oil pump and turbo pump were ok. I cleaned the rubber o-ring, 4 small window on the vacuum shroud, dust on the mouth of the flexible metal hose but the vacuum leak existed. Can you give me some tips to solve the vacuum leak of CCS-400H/204?
Yours sincerely,
Viet
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Post by Lake Shore Justin on Jul 19, 2024 16:53:02 GMT -5
Good afternoon Viet, and thank you for your inquiry. It seems you have taken several good first steps in diagnosing where the leak is coming from, but I'd like to take a look at the drawings for your specific instrument to see if there are any custom elements or obvious differences between your unit and a standard CCS-400. Could you please provide me the serial number of your cryostat when you get a spare moment? Thanks in advance!
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