- Insert container with proper amount of mixed compound into the chamber and inspect and install the lid on the chamber. The inspection process requires verifying the lid seal is clean and free of particles as well as the container mating surface is smooth and free of particles. Failure to observe this procedure may result in a damaged seal surface and inability to reach the desired vacuum levels.
- Verify that inlet pressure is at the recommended level of 80PSI, if not adjust supply pressure regulator to achieve the proper setting. Turn ball valve to full open position to supply air to the vacuum pump. Closely watch the mixed compound through the glass window in the chamber cover as it begins the de-aeration process. Product will initially expand rapidly. Properly mixed material in the correct amounts will expand without overflowing container and then settle back to the original volume during the process. If it appears that it is going to expand beyond the container capacity, quickly shut the ball valve, watching until the material settles back into the container, then reopen the ball valve to continue the process. Material will expand a second time, however typically at much lower volume and not overflow the container.
- Continue the process, closely watching both gauges on the pump. The vacuum gauge will indicate the chamber vacuum and the pressure gauge will indicate the air supply to the pump. Maintain the desired maximum vacuum level(26-29 in hg) for 1 to 2 minutes to complete the process.
- Turn off ball valve, when chamber is fully exhausted (vacuum gauge at 0 in hg.), remove lid and container from the chamber.
- It is recommended to let the material stabilize in the container for at least 1 minute before use.
|Vacuum Chamber Instructions (pdf)||132.75 KB|