1. Electric pump operation should always observe the current, voltage meter and water flow, and strive to pump in the rated conditions of operation.
2. Application of valve to adjust the flow, head, not overload operation. One of the following conditions should be stopped immediately:
(1) when the rated voltage exceeds 20% of the rated current;
(2) supply voltage is too high or too low (more than 400V or less than 360V);
(3) the rated head, the flow is lower than normal under a larger;
(4) insulation resistance less than 0.5 megohm;
(5) moving the water level down to the pump inlet;
(6) electrical equipment and circuit is not in accordance with regulations;
(7) pump has a sudden sound or greater vibration;
(8) protection switch frequent tripping.
3. To constantly observe the instrument, check the electrical equipment every two weeks to measure a motor insulation resistance, the resistance value of not less than 0.5 megohm.
4. Each drainage and irrigation period (2500 hours) for a repair protection, replacement of damaged wearing parts.
5. Electric pump lifting and handling:
(1) disconnect the power supply, open the cable;
(2) with the installation tool to gradually dismantle the outlet pipe, gate valve, elbow, and plywood to lift the pump cover removed, and with another clamp clamping the next section of water pipes, so in turn, section by section to remove the pump hanging out of the well. (In the lifting process, found to be stuck can not be forced to lift, should be up and down about the activities of card points to overcome safety unloading);
(3) Remove the retaining plate, water network and from the lead and three-core cable or flat cable connector cut off the cable;
(4) Remove the coupling lock ring, unscrew the set screws, remove the connecting bolts, the motor, water pump separation;
(5) release the motor filled with water;
(6) Disassembly of the water pump: Remove the water inlet with the disassembly wrench, use the disassembly cylinder to impact the conical sleeve in the lower part of the pump, remove the impeller and conical sleeve after the impeller is loosened, then unload the deflector. Finished impeller, diversion shell, the upper deflector shell, check valve.
(7) motor disassembly: in order to remove the base, thrust bearings, thrust plate, the next guide bearing, connecting seat, rejection of sand, remove the rotor, remove the guide bearing, stator and so on.
6. Pump assembly:
Check the parts before assembly cleaning rust, sludge, with the surface to be coated with butter rust, water pump large threaded connection to lead oil.
(1) the order of assembly of the motor: stator assembly → assembly of the lower bearing assembly → rotor assembly → thrust plate → shaft nut → thrust bearing assembly → base assembly → upper guide bearing assembly → skeleton oil seal → connecting seat. Adjust the stud so that the motor shaft extension in line with the requirements. Then a good regulator film, pressure regulating spring and cover.
(2) pump assembly: the axis and the water section fixed to the mounting seat, with the removable cylinder to the impeller, cone-shaped sleeve fixed on the shaft, and then installed on the diversion shell, impeller ... ... so in turn installed upper shell , Check valves and so on.
Less than eight motor pump assembly, the first in the water section and the guide bearing contact plane evenly distributed, plus the same 3 ~ 3.5 mm gaskets 3 to 4, and then even the upper reinforcement nuts, mounted on the joint The shaft, the pump shaft, the upper fixed bolt and lock ring, with the removable cylinder will be impeller, cone-shaped sleeve fixed to the pump shaft, and then installed on the diversion shell, impeller ... ... so turn up the upper diversion shell and so on. After the pump is installed, loosen the tension nut and remove the gasket. Then tighten the tensioning nut evenly, and then rotate the pump from the coupling. The rotation must be uniform.
7. Save the pump
When the electric pump is not used for a long time, it should release the water in the motor in time, wipe the surface cleanly, and put on antirust oil, place it in a clean, dry place without chemical corrosion. The motor cavity filled with water, is strictly prohibited on the temperature of 0 ℃ and below the environmental conditions, or must be clean water cavity, to prevent cracking motor.
2. Application of valve to adjust the flow, head, not overload operation. One of the following conditions should be stopped immediately:
(1) when the rated voltage exceeds 20% of the rated current;
(2) supply voltage is too high or too low (more than 400V or less than 360V);
(3) the rated head, the flow is lower than normal under a larger;
(4) insulation resistance less than 0.5 megohm;
(5) moving the water level down to the pump inlet;
(6) electrical equipment and circuit is not in accordance with regulations;
(7) pump has a sudden sound or greater vibration;
(8) protection switch frequent tripping.
3. To constantly observe the instrument, check the electrical equipment every two weeks to measure a motor insulation resistance, the resistance value of not less than 0.5 megohm.
4. Each drainage and irrigation period (2500 hours) for a repair protection, replacement of damaged wearing parts.
5. Electric pump lifting and handling:
(1) disconnect the power supply, open the cable;
(2) with the installation tool to gradually dismantle the outlet pipe, gate valve, elbow, and plywood to lift the pump cover removed, and with another clamp clamping the next section of water pipes, so in turn, section by section to remove the pump hanging out of the well. (In the lifting process, found to be stuck can not be forced to lift, should be up and down about the activities of card points to overcome safety unloading);
(3) Remove the retaining plate, water network and from the lead and three-core cable or flat cable connector cut off the cable;
(4) Remove the coupling lock ring, unscrew the set screws, remove the connecting bolts, the motor, water pump separation;
(5) release the motor filled with water;
(6) Disassembly of the water pump: Remove the water inlet with the disassembly wrench, use the disassembly cylinder to impact the conical sleeve in the lower part of the pump, remove the impeller and conical sleeve after the impeller is loosened, then unload the deflector. Finished impeller, diversion shell, the upper deflector shell, check valve.
(7) motor disassembly: in order to remove the base, thrust bearings, thrust plate, the next guide bearing, connecting seat, rejection of sand, remove the rotor, remove the guide bearing, stator and so on.
6. Pump assembly:
Check the parts before assembly cleaning rust, sludge, with the surface to be coated with butter rust, water pump large threaded connection to lead oil.
(1) the order of assembly of the motor: stator assembly → assembly of the lower bearing assembly → rotor assembly → thrust plate → shaft nut → thrust bearing assembly → base assembly → upper guide bearing assembly → skeleton oil seal → connecting seat. Adjust the stud so that the motor shaft extension in line with the requirements. Then a good regulator film, pressure regulating spring and cover.
(2) pump assembly: the axis and the water section fixed to the mounting seat, with the removable cylinder to the impeller, cone-shaped sleeve fixed on the shaft, and then installed on the diversion shell, impeller ... ... so in turn installed upper shell , Check valves and so on.
Less than eight motor pump assembly, the first in the water section and the guide bearing contact plane evenly distributed, plus the same 3 ~ 3.5 mm gaskets 3 to 4, and then even the upper reinforcement nuts, mounted on the joint The shaft, the pump shaft, the upper fixed bolt and lock ring, with the removable cylinder will be impeller, cone-shaped sleeve fixed to the pump shaft, and then installed on the diversion shell, impeller ... ... so turn up the upper diversion shell and so on. After the pump is installed, loosen the tension nut and remove the gasket. Then tighten the tensioning nut evenly, and then rotate the pump from the coupling. The rotation must be uniform.
7. Save the pump
When the electric pump is not used for a long time, it should release the water in the motor in time, wipe the surface cleanly, and put on antirust oil, place it in a clean, dry place without chemical corrosion. The motor cavity filled with water, is strictly prohibited on the temperature of 0 ℃ and below the environmental conditions, or must be clean water cavity, to prevent cracking motor.
Manufacturers recommend: Shenlong stainless steel deep well pump
Keywords:Stainless steel deep well pump, maintenance, preservation
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