Page 287 - CITS - Electrician - Trade Practical
P. 287

ELECTRICIAN - CITS





               Components                                Test                                  Results
            Noise filter        1  Unplug microwave oven or disconnect power.           Nmomal:
                                2  Remove wire                                          L(1)-L(2)(coil):Less
                                                                                        than 1 ohm N(1)-N(2)
                                3  Measure resistance (ohmmeter scale:Rx1).
                                                                                        (coil):Less than
                                                                                        1 ohm
                                                                                        Abnormal:infinite

                                                                                        Normal:
                                                                                        L(1) or L(2)-N(1) or N(2)
                                                                                        (resistor:
                                                                                        1.5M ohms

                                                                                        Abnormal: 0 ohms
            High voltage fuse   1  Depart from other components.                        Normal: under 100hm
                                2  Measure Resistance. (ohm meter scale Rx1)            Abnormal: infinite.



























































                                                           270

                                    CITS : Power - Electrician & Wireman - Exercise 103
   282   283   284   285   286   287   288   289   290   291   292