00001: Ensure complete emptying of air
|Step||Step description||Expected result||Result|
|precondition||system is off|
|Switch On the system||turn on the pump||95% vacuum||negative|
|Having a leak||leakage in places: welding-flanges.||Seal the leakage places||positive|
|Switch Off the system||turn Off the pump||the pump stops pulling out the air||positive|
|Silicon use||Put silicon in places where air leaks||Stop leakage and get 95% vacuum when we restart the pump.||positive|
|Postcondition||System is off|
Analysis of the test results:
at first, we cleaned the stainless tube with special and precise tools;
after cleaning, we noticed a small hole due to a welding error.
In order to find out if there is still air leakage, we will re-test the application of soapy water on the surface of the device and the air pressure in the device.
When we find bubbles that appear, this indicates an air leak in this place.
these flanges had a leak:
what we have to do
we will add silicone around the flanges