150QJB Deep Well Submersible Pump

The motor winding adopts special water-resistant wire for frequency conversion winding, which has excellent characteristics such as high frequency stamping resistance, pulse peak voltage stamping resistance and high temperature aging resistance. The frequency conversion winding design ensures the long-term stable conversion operation of the motor between 1HZ-50HZ, making the frequency conversion deep well pump more energy saving and longer service life.

The product is supplied by three-phase AC 380V (tolerance ± 5%), 50HZ (tolerance ± 1%). Applicable water quality conditions include water temperature not exceeding 20 °C, solid impurities content (mass ratio) is not greater than 0.01%, PH value (pH) is 6.5-8.5, hydrogen sulfide content is not more than 1.5mg/L, chloride ion content is not more than 400mg/L. The motor adopts closed or water-filled wet structure. Before use, the internal chamber needs to be filled with clean water to prevent virtual filling. The pump needs to be completely immersed in water, the penetration depth shall not exceed 70m, and the distance from the bottom of the well shall not be less than 3m. The water inlet of the well shall meet the water output and continuous operation requirements of the pump, and the output of the pump shall be controlled at 0.7-1.2 times of the rated flow. The pump shall be used vertically, and the pump must be matched with the cable according to the requirements and equipped with external overload protection device. It is strictly prohibited to conduct no-load test of the pump, and it is necessary to avoid operation without water.

This well submersible pump is a pump suitable for clean water. It is strictly prohibited to pump sediment and turbid water in new wells. The voltage level of the pump is 380/50HZ. Other voltage levels of the submersible motor need to be customized. Underground cables must be waterproof and must be equipped with starting equipment, such as distribution box, etc. The starting equipment should have common motor comprehensive protection functions, such as short circuit overload protection, phase loss protection, undervoltage protection, grounding protection and idling protection, etc. Under abnormal circumstances, the protection device should be tripped in time. In the process of installation and use, the pump must be reliably grounded. It is prohibited to push and pull the switch when the hands and feet are wet. The power must be cut off before installation and maintenance of the pump. The place where the pump is used must set up a clear "anti-electric shock" mark. Before going down the well or installation, the motor must be filled with distilled water or non-corrosive cool water, and the water inlet and outlet screws must be tightened. When testing the pump, water must be injected into the pump chamber to lubricate the rubber bearings. The instant start shall not exceed one second to check whether the direction is correct. It is necessary to pay attention to the safety of the pump when it is erected to prevent it from toppling and hurting people. Strictly in accordance with the provisions of the pump lift and flow range of use, so as not to have a large flow in the low lift pump or a large pull in the high lift, causing extreme wear of thrust bearings and other components, resulting in motor overload burn. After the pump into the well, the measurement of the motor and ground insulation resistance, not less than 100M. After the start, regular observation of voltage and current, and check whether the motor winding insulation meets the requirements; if the pump storage location temperature is below freezing, storage should discharge the water in the motor cavity, to prevent the water in the motor cavity due to low temperature and freeze damage the motor.

Brief introduction of structure: pump part is mainly composed of pump shaft, impeller, diversion shell, rubber bearing, check valve body (optional parts) and other components. Motor part is mainly composed of base, pressure regulating film, thrust bearing, thrust plate, lower guide bearing seat, stator, rotor, upper guide bearing seat, sand ring, water inlet section, cable and other components.

The main features of the product include:

1.The motor is a water-filled wet submersible three-phase asynchronous motor, the motor cavity is full of clean water, used to cool the motor and lubricate the bearing, the pressure regulating film at the bottom of the motor is used to adjust the expansion and contraction pressure difference of the water inside the body caused by the change of the temperature rise of the motor.

2.In order to prevent the sand in the well water from entering the motor, the upper end of the motor shaft is equipped with two oil seals, and a sand ring is installed to form a sand prevention structure.

3.In order to prevent the pump shaft from running up when starting, the pump shaft and the motor shaft are connected by a coupling, and an upper thrust bearing is installed at the lower part of the motor.

4.The lubrication of the motor and the pump bearing is water lubrication.

5.The motor stator winding is made of high quality submersible motor winding wire, with high insulation performance.

6.The pump is designed by computer CAD, with simple structure and good technical performance.

(1)Preparation before installation:
1. Check whether the submersible pump meets the usage conditions and scope specifed in the manual.
2. Using a heavy obiect with a diameter equal to the maximum outer diameter of the submersible pump, measure whether the inneldiameter of the wellbore can fit the submersible pump, and measure whether the well depth meets the installation requirements.
3. Check whether the wellbore is clean and whether the well water is turbid. Never use a submersible electric pump to wash the welor pump mud and sand water to avoid premature damage to the submersible electric pump.
4. Check whether the position of the welhead installation clamp is suitable and whether it can withstand the qualty of the entire unit
5. Check if the submersible pump components are complete and installed properly according to the assembly diagram in the manualRemove the filter screen and rotate the coupling to see if it rotates flexibly
6. Unscrew the water screw and fillthe motor cavity with clean, non corrosive water (note. be sure to fil it up), then tighten the waterscrew. After 12 hours of water injection, the insulation resistance of the motor should not be less than 150M Q when measured witha 500V shaking table.
7. Cable joint, cut off a 120mm rubber sleeve from one end of the outgoing cable and the matching cable with an electrician's knifethen stagger the length of the three core wires in a stepped shape, peel off a 20mm copper core, scrape of the oxide layer on theoutside of the copper wire with a knife or sand cloth, and insert the two connected wire ends in palirs.After tying the layer tightly with fine copper wire, solder it thoroughly and firmly, and sand of any. burrs on the surface. Then, forthe three joints, use polyvester insulation tape to wrap them in a semi stacked manner for three lavers. Wrap the two ends of thewrapping layer tightywith nyion thread,and then use a semi stacked method to wrap the tape for three layers. Wrap the outellayer with high-pressure insulation tape for three layers. Finally, fold the threestrands together and repeatedly wrap them for fivelayers with high-pressure tape. Each layer must be tightly tied, and the interlayer joints must be tight and fimm to prevent water frompenetrating and damaging the insulation, After wrapping, soak in water at room temperature of 20 ’c for 12 hours, and measurethe insulation resistance with a shaking table, which should not be less than 100M Ω

The attached cable wiring process diagram is as follows:

8. Use a multimeter to check whether the three-phase wires are connected and whether the DC resistance is approximately balanced.
9. Check whether the circuit and transformer capacity are overloaded, and then connect the overload protection switch or starting equipment. See Table 2 for specific models, and thenPour a bucket of water into the water pump from the water pump outlet to lubricate the rubber bearings in the pump, and then place the submersible electric pump upright and steady.Start (no more than one second) and check whether the steering direction is consistent with the steering sign. If not, swap any two connectors of the three-phase cable.Then install the filter and prepare to go down the well. If used in special occasions (such as ditches, ditches, rivers, ponds, ponds, etc.), the electric pump must be reliably grounded.

(2)Installation equipment and tools:
1. One pair of lifting chains for more than two tons.
2. A tripod with a vertical height of no less than four meters.
3. Two hanging ropes (wire ropes) that can bear a weight of more than one ton (can bear the weight of a complete set of water pumps).
4. Install two pairs of clamps (splints).
5. Wrenches, hammers, screwdrivers, electrical tools and instruments, etc.

(3)Electric pump installation:
1. The installation diagram of the submersible electric pump is shown in Figure 2. The specific installation dimensions are shown in Table 3 "List of Installation Dimensions of the Submersible Electric Pump".

2. Submersible electric pumps with a head less than 30 meters can be hoisted directly into the well using hoses and wire ropes or other hemp ropes that can bear the full weight of the entire machine, water pipes, and water in the pipes.

3. Pumps with a head of more than 30 meters use steel pipes, and the installation sequence is as follows:
①Use a clamp to clamp the upper end of the water pump part (the motor and water pump have been connected at this time), lift it with a hanging chain, and slowly tie it into the well untilPut the clamp on the wellhead and remove the hanging chain.
② Use another pair of clamps to clamp a pipe, lift it with a hanging chain 15 cm away from the flange, and lower it slowly. Between pipe flange and pump flangePut the rubber pad in place and tighten the pipe and pump evenly with bolts, nuts and spring washers.
③ Lift the submersible pump slightly, remove the clamp on the upper end of the water pump, tie the cable firmly to the water pipe with a plastic tape, and slowly tie it down until The clamp is placed at the wellhead.
④Use the same method to tie all water pipes into the well.
⑤After the lead-out cable is connected to the control switch, it is connected to the three-phase power supply.

(4)Things to note during installation:
1. If a jamming phenomenon is found during the pumping process, turn or pull the water pipe to overcome the jamming point. If various measures still do not work, pleaseDo not force the pump down to avoid damage to the submersible electric pump and the well.
2. During installation, a rubber pad should be placed at the flange of each pipe and tightened evenly.
3. When the water pump is lowered into the well, it should be placed in the middle of the well pipe to prevent the pump from running against the well wall for a long time, causing the pump to vibrate and the motor to sweep and burn.
4. Determine the depth of the water pump to the bottom of the well according to the flowing sand and silt conditions of the well. Do not bury the pump in the mud. The distance from the water pump to the bottom of the well is generally not less than 3 meters (see Figure 2).
5. The water entry depth of the water pump should be no less than 1-1.5 meters from the dynamic water level to the water inlet node (see Figure 2). Otherwise, the water pump bearings may be easily damaged.
6. The lift of the water pump cannot be too low. Otherwise, a gate valve needs to be installed on the wellhead water pipeline to control the pump flow at the rated flow point to prevent the motor from being overloaded and burned out due to large flow rates.
7. When the water pump is running, the water output should be continuous and even, the current should be stable (under rated working conditions, generally no more than 10% of the rated current), and there should be no vibration or noise. If there is any abnormality, the machine should be stopped to find out the cause and eliminate it.
8. When installing, pay attention to the setting of the motor grounding wire (see Figure 2). When the water pipe is a steel pipe, lead it from the wellhead clamp; when the water pipe is a plastic pipe, lead it from the grounding mark of the electric pump.

 1.submersible pump installation is complete, re-check the insulation resistance and three-phase conduction from the switch, check the instrument and start the equipment connection error, if there is no problem, can start the trial, after the start of the instrument indicating readings whether more than the nameplate stipulated rated voltage and current, observe the pump noise and vibration phenomenon, everything is normal can be put into operation.

 2.pump operation for the first four hours, should be shut down quickly test the thermal insulation resistance of the motor, the value should not be less than 0.5 megaohm.

 3.pump shutdown, should be started after an interval of five minutes, to prevent the water column in the pipe has not completely reflux caused by excessive motor current and burnout.

 4.pump into normal operation, in order to prolong its service life, to check the supply voltage, working current and insulation resistance is normal, if found the following situation, should immediately shut down troubleshooting.

 1.in the rated condition, the current is more than20%.

 2.dynamic water level to the water inlet section, causing intermittent water.

 3.submersible pump severe vibration or noise.

 4.supply voltage is lower than 340 volts.

 5.fuse burned out a phase.

 6.water pipe damage.

 7.motor to the thermal insulation resistance is less than 0.5 megaohm. 5. The product is a pump unit with easy disassembly function, with simple steps of disassembly, so that users can easily maintain and clean. The disassembly steps include unraveling the cable rope, taking down the pipeline part and the line protection plate, unloosening the water discharge bolt, excluding all the water in the motor chamber, removing the filter and loosening the coupling fixing screw fixing the motor shaft, unscrewing the bolt connecting the water inlet section and the motor, separating the pump and the motor (note that the unit should be leveled when separating to prevent the bending of the pump shaft), the disassembly sequence of the pump is: water inlet section, impeller, shunt shell, impeller, and cleaning the valve body. When disassembling the impeller, use special tools to loosen the conical sleeve fixing the impeller. In the whole disassembly process, avoid bending the pump shaft and damaging various parts. The disassembly process of the motor is: put the motor on the platform, and remove the nuts, base, shaft head lock nut, thrust plate, key, and lower guide rail from the bottom of the motor in order. Bearing seat, tie rod bolt, and then take out the rotor (be careful not to damage the wiring harness) and finally remove the connecting section and the upper guide bearing seat. Before assembling the unit, the rust and dirt of each part should be cleaned, and the sealant should be coated on each mating surface and fastener, and then the assembly should be carried out in reverse order according to the disassembly (the movement of the motor shaft after assembly is about 1 mm). After the assembly is completed, the coupling should be flexibly rotated, and then the filter should be put on for machine test. This pump unit is not only convenient and easy to use, but also has detailed instructions, which provides users with convenient maintenance experience. 6. Submersible electric pump every operation for one year, or less than one year but the diving time has reached two years, should be put out of the well according to Article 5 for disassembly and maintenance, and replace the worn parts.

1, put out the water in the motor cavity (especially in winter to prevent the motor from freezing), and tie the cable well.

2, store in an indoor room without corrosive substances and gases, with a temperature below 40 °C.

3, long-term use should pay attention to the rust prevention of submersible pumps.

01 Deep well water intake

02 High-rise water supply

03 mountain water supply

04 tower water

05 Agricultural irrigation

06 garden irrigation

07 river water intake  

08 domestic water