لینک دانلود و خرید پایین توضیحات دسته بندی : پاورپوینت نوع فایل : .ppt ( قابل ویرایش و آماده پرینت ) تعداد اسلاید : 14 اسلاید قسمتی از متن .ppt : Safe Use and Operation of Vacuum Lines Outline Starting Up Shutting Down Cleaning Manifold Changing Pump Oil Dealing with Liquid O2 Starting Up PPE Needed: Lab Coat, Gloves, Safety Goggles/Glasses 1. Ensure that the manifold stopcocks, as well as all seals, are properly greased. 2. Check to see that the vacuum trap is dry and clean. 3. Make sure that there is enough Liquid N2 on hand to fill the dewar. 4. Insert traps into empty dewars. 5. Ensure that all valves are closed, and start or open line to the vacuum pump. 6. Fill the dewar with liquid nitrogen. Wrap the top with a towel, cotton, glass wool, or aluminum foil. 7. Watch the gauge to ensure that the pressure is dropping. Notes for Starting Up Depending on whether you have one or two traps, you will have to refill the dewar(s) every 6-8 or 12 ...
⏬ دانلود مستقیم فایل در ادامه مطلب ⏬