1, the replacement of lubricating oil: open the sealed chamber and the motor inside the oil hole screw, the sealed indoor and motor lubricating oil all the internal release, the replacement of new oil to ensure that the lubrication system to work properly.
2, check the wearing parts: submersible pump impeller, ring, bushings, housings, etc. are wearing parts. First part of the pump should be removed, check the wearing parts are intact. Do not use damaged or unqualified spare parts.
3, remove the pump shell anti-rust: before the use of spring, should be opened on top of the pump shell, turn the impeller and then close the start, to prevent the parts rust can not start and burn the motor. The maintenance of water-filled motor is particularly important.
4, the drying motor: 500 megohm meter with submersible pump winding and the insulation resistance of the shell, if the resistance is less than 0.5 megohms, you should get rid of motor moisture.
Drying methods are: external drying method, current drying method and the two at the same time the joint drying method. External drying method is the use of external heat source for processing,
Commonly used measures are:
⑴ blowing hot air: the use of electric heaters blower (agricultural small submersible pumps can be used hair dryer) blowing hot air in order to achieve the purpose of drying;
⑵ bulb baking: in the closed box, the use of a number of 200-watt bulb for baking. Note that baking temperature can not be too high, should be controlled below 125 ℃;
⑶ current drying: According to the submersible pump impedance and the size of the power of three-phase motor in series or parallel, and then access to a variable resistor to adjust the current rating of the rated current of about 60%, power dry.
5, to ensure that the seal: agricultural submersible pump on the sealing requirements are very strict, replace the sealed indoor lubricants, if the oil is turbid and high water content, you must replace or replace the whole seal box or seal ring to ensure its seal Performance is good.
6, check the 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, prohibited "sick" improvise.
Check the method is as follows: If the motor is running, resulting in "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 intermittent Of the "choking choke" sound, hand rotation of the rotor when the uncertainty of the dead, the ball is generally damaged frame, broken inner ring or ball. In such cases, you must replace the bearings, so as to avoid greater damage.
7, to ensure that bearing lubrication: water-filled submersible pumps should be checked to replace the upper and lower end caps bearing the skeleton oil seal and lithium-based grease. To ensure long-term lubrication of the bearing in good condition to work.
2, check the wearing parts: submersible pump impeller, ring, bushings, housings, etc. are wearing parts. First part of the pump should be removed, check the wearing parts are intact. Do not use damaged or unqualified spare parts.
3, remove the pump shell anti-rust: before the use of spring, should be opened on top of the pump shell, turn the impeller and then close the start, to prevent the parts rust can not start and burn the motor. The maintenance of water-filled motor is particularly important.
4, the drying motor: 500 megohm meter with submersible pump winding and the insulation resistance of the shell, if the resistance is less than 0.5 megohms, you should get rid of motor moisture.
Drying methods are: external drying method, current drying method and the two at the same time the joint drying method. External drying method is the use of external heat source for processing,
Commonly used measures are:
⑴ blowing hot air: the use of electric heaters blower (agricultural small submersible pumps can be used hair dryer) blowing hot air in order to achieve the purpose of drying;
⑵ bulb baking: in the closed box, the use of a number of 200-watt bulb for baking. Note that baking temperature can not be too high, should be controlled below 125 ℃;
⑶ current drying: According to the submersible pump impedance and the size of the power of three-phase motor in series or parallel, and then access to a variable resistor to adjust the current rating of the rated current of about 60%, power dry.
5, to ensure that the seal: agricultural submersible pump on the sealing requirements are very strict, replace the sealed indoor lubricants, if the oil is turbid and high water content, you must replace or replace the whole seal box or seal ring to ensure its seal Performance is good.
6, check the 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, prohibited "sick" improvise.
Check the method is as follows: If the motor is running, resulting in "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 intermittent Of the "choking choke" sound, hand rotation of the rotor when the uncertainty of the dead, the ball is generally damaged frame, broken inner ring or ball. In such cases, you must replace the bearings, so as to avoid greater damage.
7, to ensure that bearing lubrication: water-filled submersible pumps should be checked to replace the upper and lower end caps bearing the skeleton oil seal and lithium-based grease. To ensure long-term lubrication of the bearing in good condition to work.
Manufacturers recommend: Shenlong stainless steel fountain submersible pump
Keywords:Agricultural submersible pumps, maintenance precautions
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