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Job Description:

  • 1) Tests armatures and field assemblies for motors to locate short, open, or grounded circuits, using electrical test apparatus that shows defects on panel meters or oscillograph patterns: Places armature in fixture equipped with brush contactors or touches test prods to commutator bars to make bar-to-bar and similar tests.

  • 2) Compares meter readings with fixed calibration on meter to determine shorts, opens, and grounds.

  • 3) Connects master unit, such as armature or field assembly, to terminals of winding tester.

  • 4) Looks into oscilloscope to compare test pattern of each unit tested with master unit.

  • 5) Turns dials to create different test situations and recognizes differences from master pattern.

  • 6) Inspects unit for mechanical defects.

  • 7) Scrapes chips and dirt from commutator slots, using brush and pick.

  • 8) Records quantity and classification of rejects and total number tested.

  • 9) May replace and revarnish string bands, reconnect leads, and resolder connections to repair armatures.




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End Of Job Description for: "ARMATURE TESTER I"
DOT:   724.384-010

Job Number: 232