Reference no: EM131204793
Laboratory Exercise: Motor Control
Procedure
1. Redraw the following motor scatter circuit with either AutoCADD or Visio or other drawing package available to you.
2. Add numbers to the drawing signifying wire numbers.
3. Remove the coil from the starter and find and identify the contactors. If possible, remove one of the contactors and show to the instructor.
4. With sticky-notes, identify each of the following:
power leads
overloads
overload contact
contactor
coil
auxiliary contact (aux contact)
motor leads (T leads)
When complete, have instructor initial here:
5. Re-install the coil and wire the circuit using wire provided. Tag each wire with either a sticky label or other means using the numbers assigned above.
6. Have the circuit checked by the instructor. Do not attempt to hook up to any available voltage. This circuit will be checked without power.
7. When done, have instructor verify the circuit is acceptable by initialing the blank below:
8. Question: Why do contactors become pitted and need to be replaced?
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