SECRETS SCIENTIFIC PRO FREEZE DRYER CANADA TOP

Do you have any vacuum gauges at all to test the pump? ( Though I doubt that is the problem based upon your tests )After the 3rd cycle I had hit my 20 cycle oil limit so it was time to change the oil. This time I took the time to add a flush port to my pump. When I replaced the plumbing with larger diameter brass and a cutoff valve I did not think