The technician performing the vacuum decay test is often to cause of the failure.
Not knowing or not understanding what where or why or how things are supposed to be assembled what should not be done and understanding results are the biggest problem with technicians trying to get good results.
Reaching a certain minimum number like 500 µm or 200 µm means absolutely nothing.
It’s after you turn off the vacuum it has a hold for example 10 or 15 minutes without going over that number.
If it goes over your set number then you turn it back on and draw vacuum for a longer duration of time until you Have achieved the results.
If not find the problem and correct it
