8-55 
 
8.  Repeat step 5 and step 6 each time you move the test fixture of the vaporizer support. If 
the negative pressure ball is completed expanded within 30s, the rubber flat washer or 
the lower surface in contact with the mechanical face is damaged. Handle this issue 
according to the fault locating table. If all test items are passed, continue the following 
test: 
9.  Place back the seal ring. Fix the vaporizer and enable it.   
 
10.  Repeat step 5 and step 6 each time you move the test fixture of the vaporizer support. If 
the negative pressure ball is completed expanded within 30s, the seal ring is damaged. If 
these two test items are passed, the vaporizer support assembly and four sealing parts are 
in good conditions.