Agricultural submersible pump bearings and bearing lubrication, maintenance precautions

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Response to the submersible pump to do the necessary maintenance to extend its life and ensure the normal use when busy:
Replacement of oil: open the sealed rooms and the moto r inside the hole screw, to seal the interior and motor internal lubricant released and replaced with new oil to ensure the

normal work of the lubrication system.NTN bearig

2, check the wearing parts: the impeller of the submersible pumps, buckles, bushings, bearing, etc. wearing parts. The first pump part removed, check the wearing parts is

intact. Damage and failure of parts is strictly prohibited.

3, the dissolution of the pump shell against rust: spring use should be open to the top level of the pump casing, the rotating impeller and then start closing, to prevent parts

rust does not start while burning motor. The maintenance of water-filled motor is particularly important.double row bearing

, Dry motor: 500 megohm meter to measure the winding of submersible pumps and she ll insulation resistance, if the resistance is less than 0.5 megohm, they should get rid of the

motor water. Drying methods: external drying method, the current drying method and both joint drying method. External drying method is processed using an external heat source,

commonly used measures are: â'´ blowing hot air: use of the heater blower (small agricultural submersible pumps can be used hair dryer) to blow hot air dried in order to achieve

the purpose; â'µ bulb baking: In closed box, the use of a number of about 200 watt light bulb to bake. Note baking temperature is not too high and should be controlled below 125

℃; (3) current dry: depending on the size of the impedance of submersible pumps and power three-phase motor winding in series or parallel, and then access a variable resistor,

adjust the amount of current about 60% of the rated current value, the power dry.angular bearings

5, to ensure sealing: agricultural submersible pumps are very strict requirements on the sealing, replacement of sealed indoor oil, if oil turbidity and high water content, must

be to replace or replace the sealed box or seal ring to ensure that its seal good performance.

Wear and tear or gap is too large, check the bearings: Check the motor part of the lower bearing, if found, shall be promptly replaced with new bearings, is strictly prohibited

"sick" improvise. Check as follows: If the motor is running, a "cracking thump" sound, and is proportional to the cycle and speed, and the hand to rotate the rotor feel

effortless, is the bearing raceway is a bit astringent or have avulsion phenomenon; issued bearing intermittent "sound" choking choking uncertain dead hand of the rotation of

the rotor, general damage to the ball rack, inn er ring rupture or ball broken. Encounter this situation, you must replace the bearings, to avoid greater damage.

7 to ensure that the bearing lubrication should be checked: the water-filled submersible pump to replace the upper and lower end caps bearing chamber skeleton oil seal and

lithium grease. To ensure that the bearing long-term work in a well-oiled state.