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Which meter is used to bench check a motor for shorts or open windings?
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If the fuse of the secondary side of the transformer blows what are the test to be conducted to check if the transformer is defective or not?
1st make sure the power is turned offDisconnect one lead on primary side of transformer and using an ohm meter check for continuity. You will probably get a low ohm reading if you get no reading the windings are broken and transformer is no good2nd test using ohm meter again check for winding to ground you should get no reading. If you get a ohm value the transformer is shorted to groundRepeat these tests on secondary sideWith power on and fuse removed with a voltage meter check for power on secondary sideIf it is okay turn off power and install fuseIf fuse blows again check for shorts in circuitRemember to be careful when power is turned on
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What meter is used to bench check a motor for short or open winding?
Ohmmeter
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If you are talking about the compressor clutch coil windings then connect one wire to from the coil to ground and the other wire to a 12-volt source, the coil will become magnetized and will be able to put up a heavy piece of metal or you can use a ohm meter as well..........
If the fuse of the secondary side of the transformer blows what are the test to be conducted to check if the transformer is defective or not?
1st make sure the power is turned offDisconnect one lead on primary side of transformer and using an ohm meter check for continuity. You will probably get a low ohm reading if you get no reading the windings are broken and transformer is no good2nd test using ohm meter again check for winding to ground you should get no reading. If you get a ohm value the transformer is shorted to groundRepeat these tests on secondary sideWith power on and fuse removed with a voltage meter check for power on secondary sideIf it is okay turn off power and install fuseIf fuse blows again check for shorts in circuitRemember to be careful when power is turned on
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First, see if the each coil is getting the required voltage from the ignition switch (probably 12V). If they are, you can check the resistance of the coil with a simple volt meter. Should read minimal resistance. If the meter reads OL then the coil windings are open (defective/bad).
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