WEEK #11 TOPICS 
 
  1. Checking refrigerant charge using superheat & subcool methods (EPA study guide pg. 17, textbook pgs. 166-167, and video; see additional resources #21 ).
  2. Checking refrigerant charge ⁄ A⁄C lab:
  3. Make the following changes to your notes ⁄ invoice: the unit has a TXV, dry bulb temperature = 55 degrees, condensing pressure = 158 degrees, liquid line temperature = 74 degrees.What is the subcool?  Is it OK?
  4. A⁄C inspection⁄test tasks
  5. Ferris State exam (Type II and III) OR Mainstream Engineering Type I Open Book exam retake
  6. On the label of a capactior you find the following:  45 uf ⁄ 5 uf  6%.  What do these numbers mean? You measure the capacitor and get the following readings:  41 uf and 5.2 uf.  Is the capacitor good?  Why or why not?
  7. Service calls lecture and practice (old textbook page 97+; new textbook page 43+)
 

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