175QJP Peep Well Submersible Pump

QJP series fountain pump is a special pump for fountain developed by our factory.The pump motor core is made of high quality cold rolled silicon steel, which makes the pump more efficient, good magnetic conductivity, and frequent start will not fever.Both ends of the motor rotor use water as lubricant alloy copper sleeve.Stainless steel sleeve instead of ball bearings, to avoid the problem of easy rust ball bearings and lack of oil wear and tear the motor.The most suitable for music fountain use, all models can be used.

This product is a three-phase AC 380V (tolerance + / - 5%), 50HZ (tolerance + / - 1%) power supply system. 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 greater than 1.5mg/L, chloride ion content is not greater than 400mg/L. The motor is a closed or water-filled wet structure. Before use, it must be filled with clean water to prevent false filling, and then tighten the water injection and exhaust bolts, otherwise it is not allowed to use. The submersible pump must be completely immersed in water, and the penetration depth shall not exceed 70m. The distance between the submersible pump base and the bottom of the well shall not be less than 3m. The well flow shall be able to meet the water output and continuous operation of the submersible pump. The water output of the submersible pump shall be controlled at 0.7-1.2 times of the rated flow. The well shall be vertical, and the submersible pump can not be used horizontally or upside down, but only vertically. The submersible pump shall be equipped with cables and external overload protection devices as required. The pump is strictly prohibited from no-load test without water.

1, well submersible pump for clean water pump, prohibit the new well, pumping sediment and muddy water,

2, well water pump voltage grade of 380/50HZ, the use of other voltage grades of submersible motors need to be customized. The underground cable must use waterproof cable, must be equipped with starting equipment, such as distribution box, start not ready should have commonly used motor comprehensive protection function, such as short circuit overload protection, phase protection, undervoltage protection, grounding protection, idling protection, in case of abnormal conditions, the protection device should be timely action trip.

3, the installation and use of the pump must be reliably grounded, prohibit the push and pull switch when the hands and feet are wet, the installation and maintenance of the pump must be cut off the power supply, the use of the pump place to set up "to prevent electric shock" obvious signs:

4, down the well or before installation, the motor cavity must be filled with distilled water or non-corrosive clean cold boiling water, tighten the / water bolt, the pump on the ground test run, must be to the pump chamber water lubrication rubber bearings, instant start not more than a second, see whether the steering is the same as the steering instructions. When the pump is upright, pay attention to safety, prevent overturning injury.

5, strictly according to the provisions of the pump lift, flow range of use, to prevent low flow or high lift pumping force, the thrust bearing and other parts of the wear, the motor overload burned

6, after the pump down the well, the measurement of the motor to the ground insulation resistance should not be less than 100M, after the start to observe the voltage and current, check the motor winding insulation, whether in line with the requirements; pump storage location temperature if less than freezing point, should be dry the motor cavity water, prevent the motor cavity water ice damage caused by low temperature.

The pump part is mainly composed of pump shaft, impeller, shunt shell, rubber bearing, check valve body (optional) and other components. The motor part mainly includes base, pressure regulating diaphragm, thrust bearing, thrust plate, lower guide bearing seat, stator, rotor, upper guide bearing seat, sand ring, water inlet section, lead cable and other components. The main features of the product include: the motor is a water immersed wet three-phase asynchronous motor, the motor cavity is full of 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 internal water caused by the change of temperature; in order to prevent the sand particles in the well water from entering the motor, two oil seals are installed on the upper end of the motor shaft extension, and a sand control structure is formed by installing the sand ring; in order to prevent the pump shaft from jumping at startup, the pump shaft is connected with the motor shaft through a coupling, and the thrust bearing is installed under the motor; the lubrication of the motor and the pump bearing is water lubrication; the stator winding of the motor is made of high quality submersible motor winding, with high insulation performance; the pump is designed by computer CAD, with simple structure and excellent 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.After installing the submersible pump, recheck the insulation resistance and the three-phase continuity at the switch, and check whether there are errors in the connection of the instrument and the starting equipment.If there are no problems, you can start to test the machine. After starting, observe whether the indication readings of each instrument are correct. If the rated voltage and current specified on the nameplate are exceeded, observe whether the pump emits any noise or vibration. If everything is normal, it can be put into operation.
• 2. After the pump runs for the first four hours, the thermal insulation resistance of the motor should be closed and tested quickly.Its value should not be less than 0.5 megaohm.After the pump stops, it should be restarted after an interval of five minutes to prevent the water column in the pipeline from completely reversing and burning the motor due to excessive current.
• 3. After the pump is put into normal operation, in order to prolong its service life, it is necessary to check regularly whether the supply voltage, working current and insulation resistance are normal. If the following conditions are found, the machine should be stopped immediately to troubleshoot.
•  
• 1 In the rated working condition, the current exceeds 20%.
• 2 The dynamic water level drops to the water inlet section, causing intermittent water.
• 3 The submersible pump has severe vibration or noise.
• 4 The supply voltage is lower than 340 volts.
• 5 A fuse is burned out.
• 6 The water supply pipe is damaged.
• 7 The motor's insulation resistance to the geothermal state is lower than 0.5 megaohm.
•  
• Unit disassembly:
• 1.untie cable rope, remove the pipeline part, remove the wire plate.
• 2.screw down the water bolt, put the water in the motor chamber.
• 3.remove the filter, loose the fixed screw on the coupling to fix the motor shaft.
• 4.screw down the bolt connecting the inlet junction with the motor, and separate the pump from the motor (pay attention to the unit cushion when separating, to prevent the bending of the pump shaft)
• 5.the disassembly sequence of the pump is: (see figure 1) inlet junction, impeller, diversion shell, impeller...... check valve body, when removing the impeller, use special tools to loosen the conical sleeve of the fixed impeller first, and avoid bending and bruising of the pump shaft in the process of disassembly.
• 6.the disassembly process of the motor is: (see figure 1) place the motor on the platform, and remove the nuts, base, shaft head locking nut, thrust plate, key, lower guide bearing seat and double head bolt from the bottom of the motor in turn, and then take out the rotor (pay attention not to damage the wire package) and finally remove the connecting section and upper guide bearing seat.
• 7.unit assembly: before assembly, the rust and dirt of the parts should be cleaned, and the mating surface and fasteners coated with sealant, and then assembled in the reverse order of disassembly (the motor shaft moves up and down after assembly for about one millimeter), after assembly, the coupling should be flexible, and then the filter screen test machine. Submersible pumps shall be taken out of the well for dismantling and maintenance according to Article 5 after a year of operation, or less than a year of operation but two years of diving time, and the worn parts shall be replaced.

This product adopts advanced design and provides advanced storage suggestions to ensure long-term use effect.First of all, in winter, it is necessary to exhaust all the water to prevent freezing. In addition, the wire rolls should be placed well and tied up.Secondly, when storing, the environment without corrosive action and gas should be selected and the temperature should be kept below 40 °C. Finally, when not used for a long time, attention should be paid to prevent rust of submersible pump.These storage requirements will ensure that the product can maintain its performance status and prolong its service life for a long time.

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