Check the submersible pump bearings: Check the motor part of the upper and lower bearings, if found to wear or clearance is too large, must be promptly replaced with new bearings, is strictly improper use.
Check as follows:
If the motor is running, the submersible pump produces a “click” sound, and the cycle and the speed is proportional to, and hand rotation of the rotor is laborious, is the bearing raceway a bit astringent or avulsion phenomenon; if the bearing issued intermittent ” Choking choking “sound, hand rotation of the rotor has an uncertain dead point, usually the submersible pump ball rack damage, rupture of the inner ring or ball broken. In such cases, you must replace the bearings, so as to avoid greater damage.
Submersible pumps in the demolition of the front and rear end cover should be marked with the base of the joints. In the demolition of submersible pumps impeller and bushings and other components, it should be noted that, do not hard punch hard, can be used thermal expansion principle, the edge of the heating side of the Tap or use “Rama” and other tools to remove.
Winding burnout should analyze the reasons, such as overload, card pump, lack of phase, leakage leakage short circuit, etc., in the demolition of submersible pump motor windings, do not make silicon steel tilt shift and glitching phenomena, so as not to assemble the new winding knock ” Bell “caused when the ground or short-circuit fault. Rewinding the new coil, the enameled wire and insulating paper must be selected regular manufacturers, because the submersible pump motor heat resistance level is generally E, B-class. Be sure to pay attention to its heat level corresponding. Insulation should be low enough in thickness and be padded in place. Winding off the assembly line, careful not to make the coil wipe the stator core, but also avoid using the crossed line repeatedly.
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