Single-phase motor maintenance methods and processes

Update:24 Jan 2018
Summary:

   Single-phase motor generally refers to the single-ph […]

   Single-phase motor generally refers to the single-phase AC power supply (AC220V) power supply of small-power single-phase asynchronous motor. How to maintain single-phase motor to extend the service life?
    1, the use of the environment should always be kept dry, the motor surface should be kept clean, the inlet should not be obstructed by dust, fibers and so on.
    2, when the motor thermal protection continuous action, should identify the fault from the motor or overload or protection device setting value is too low, eliminate the fault, before being put into operation.
    3, should ensure that the motor in the process of running a good lubrication. General motor running 5000 hours or so, that should be added or replaced grease, found running overheating or lubrication deterioration, the hydraulic grease in time. When replacing the grease, remove the old lubricating oil and wash the groove of the bearing and the bearing cap with petrol, then fill the ZL-3 lithium grease with 1/2 of the cavity between inner and outer rings of the bearing (pair 2 poles) And 2/3 (for 4,6,8 pole).
    4, when the end of the bearing life, the motor vibration and noise will be significantly increased, check the radial clearance of the bearing the following values, the bearings should be replaced.
    5, remove the motor, remove the rotor from the shaft end or non-stretch can be. If it is not necessary to remove the fan, it is more convenient to remove the rotor from the non-shaft extension. When withdrawing the rotor from the stator, the stator windings or insulation should be protected from damage.
    6, the replacement of the winding must note the form of the original winding, size and number of turns, wire gauge, etc., when the loss of these data should be obtained from the manufacturer, free to change the original design of the winding, the motor often one or several performance Worse, or even unusable.
    Single-phase motor maintenance process: cleaning rotor - to replace the carbon brush or other parts - vacuum F-pressure impregnation - drying - school balance.

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