10.1.20. Possible malfunctions of electric motors and ways of their elimination
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Possible malfunctions of electric motors and ways of their elimination
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Cause of defect
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Way of elimination
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At inclusion the electric motor of a heater does not work
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There is no contact in connecting blocks
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To check reliability of connections and to eliminate malfunction
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The switch does not work
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To check and repair it
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Lag of brushes, oiling or pollution by electric motor anchor collector dust
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To disassemble the electric motor, to eliminate lag of brushes. To wipe a collector with the rag moistened in gasoline. To clear grooves between collector plates
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Oxidation of contacts of a fusible insert and its nest
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To clear contacts of a nest of a fusible insert
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The safety lock fused
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To find a cause of defect, to eliminate it and to replace a safety lock
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The electric motor works only at one speed
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To check reliability of connection on conclusions of the resistor and its integrity. Damaged to replace
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At inclusion the electric fan works with the increased noise or is in the slowed-down state
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Weakening of the screw of fastening of rotors on an electric motor shaft
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Before an inhaling of fastening of a rotor to provide a gap of 2 mm between a rotor and overlays of the electric motor of a heater
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The anchor rotates with a small speed or absolutely stops
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Short circuit between collector plates
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To clean intervals between collector plates a wooden stick and to blow compressed air. To oil felt washers of plugs turbine
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The electric motor works, but air does not come on a windshield and to a body
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Fans rotate in other party
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To connect the electric motor according to the electrical circuitry
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