1, check the submersible pump bearings: check the motor part of the upper and lower bearings, if it is found that the wear or clearance is too large, it is necessary to replace the new bearings in time, is strictly prohibited "sick" make do with. The inspection method is as follows: If the motor is running, a “click†sound is generated, and the cycle is proportional to the rotation speed, and it is laborious to turn the rotor by hand, which is a bit astringent or avulsed on the bearing raceway; if the bearing is intermittent The "click" sound, there is an indeterminate dead point when turning the rotor by hand, generally the ball frame is damaged, the inner ring is broken or the ball is broken. In the above situation, the bearing must be replaced to avoid further damage.
2. Check the wearing parts of the submersible pump: The submersible pump's impellers, retaining rings, bushings, and bearing seats are wearing parts. First, the water pump should be partially removed to check if the wearing parts are intact. Do not use damaged and unqualified spare parts.
Keywords: submersible pump 3, replacement of submersible pumps Lubricating Oil: Open the oil hole screws in the sealed chamber and the motor, respectively, to release all the oil in the sealed chamber and the motor, and replace the new oil to ensure the normal operation of the lubrication system.
4, remove the submersible pump casing anti-rust: spring before use, should open the top of the pump casing, turn the impeller and then switch on and start, to prevent parts from rust can not start properly and burn the motor. This maintenance is particularly important for water-filled motors.
5, to ensure that the submersible pump seal: Agricultural submersible pumps on the seal requirements are very strict, in the replacement of sealed indoor lubricants, if the oily turbidity and high water content, you must replace the entire replacement or replace the seal box or seal ring to ensure Its sealing performance is good.
6. Drying submersible pump motor: Measure the insulation resistance of the submersible pump's windings and housing with a 500 megohmmeter. If the resistance is less than 0.5 megohms, the motor water should be driven off. Drying methods include: external drying method, current drying method, and a combination drying method for both.
External drying method is the use of external heat source for treatment. Common measures include:
(1) Blowing hot air: The blower of the electric heater (a small agricultural submersible pump can be used as a hair dryer) blows hot air to achieve the purpose of drying;
(2) Bulb baking: In a closed box, use a few 200-watt bulbs to bake. Note that baking temperature can not be too high, should be controlled below 125 °C;
(3) Current drying: The three-phase windings of the motor can be connected in series or in parallel according to the impedance of the submersible pump and the size of the power supply, and then a variable resistor is connected to adjust the current amount to about 60% of the rated current value, and the power is dry.
7, to ensure that the submersible pump bearing lubrication: The submersible pump should check the replacement of the upper and lower end cover bearing housing skeleton oil seal and lithium grease. To ensure that the bearings work well under long-term lubrication conditions.
2. Check the wearing parts of the submersible pump: The submersible pump's impellers, retaining rings, bushings, and bearing seats are wearing parts. First, the water pump should be partially removed to check if the wearing parts are intact. Do not use damaged and unqualified spare parts.
Keywords: submersible pump 3, replacement of submersible pumps Lubricating Oil: Open the oil hole screws in the sealed chamber and the motor, respectively, to release all the oil in the sealed chamber and the motor, and replace the new oil to ensure the normal operation of the lubrication system.
4, remove the submersible pump casing anti-rust: spring before use, should open the top of the pump casing, turn the impeller and then switch on and start, to prevent parts from rust can not start properly and burn the motor. This maintenance is particularly important for water-filled motors.
5, to ensure that the submersible pump seal: Agricultural submersible pumps on the seal requirements are very strict, in the replacement of sealed indoor lubricants, if the oily turbidity and high water content, you must replace the entire replacement or replace the seal box or seal ring to ensure Its sealing performance is good.
6. Drying submersible pump motor: Measure the insulation resistance of the submersible pump's windings and housing with a 500 megohmmeter. If the resistance is less than 0.5 megohms, the motor water should be driven off. Drying methods include: external drying method, current drying method, and a combination drying method for both.
External drying method is the use of external heat source for treatment. Common measures include:
(1) Blowing hot air: The blower of the electric heater (a small agricultural submersible pump can be used as a hair dryer) blows hot air to achieve the purpose of drying;
(2) Bulb baking: In a closed box, use a few 200-watt bulbs to bake. Note that baking temperature can not be too high, should be controlled below 125 °C;
(3) Current drying: The three-phase windings of the motor can be connected in series or in parallel according to the impedance of the submersible pump and the size of the power supply, and then a variable resistor is connected to adjust the current amount to about 60% of the rated current value, and the power is dry.
7, to ensure that the submersible pump bearing lubrication: The submersible pump should check the replacement of the upper and lower end cover bearing housing skeleton oil seal and lithium grease. To ensure that the bearings work well under long-term lubrication conditions.
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