Submersible deep well water pump installation

The shape of adjustment pad had better be similar to the shape of pump ground feet or motor ground feet. Less than three layers of pads are allowed under the ground bolts. Make sure the pumping unit is installed stably.

We need a soft pipe connector or telescopic tube connector, whether rigid type or flexible type. The connector should be installed at the water inlet and water outlet of the submersible deep well water pump. This can prevent the pump body from bearing the weight of pipeline. It also ensures that the normal operation of the pump will not be impacted if the pipeline inclines or vibrates.

If the submersible deep well water pump is used in a situation that needs suction head, then a bottom valve or vacuum water drawing equipment should be installed at the lower end of the suction pipe. The pipeline should not have too many bends. It should not leak, accumulate air or inhale air. Otherwise, the suction performance of the pump will be affected.

We can install a filter screen 3 to 4 times larger than the cross section of the inlet pipe in front of the inlet pipe. This filter screen will prevent impurities from entering the pipeline. For a large pump, we can set a trash rack or rotary filter screen in front of the pump inlet.

Before installation, you should check if there is any block inside the flow channel of the pump and clean them off so that it will not hinder the normal running of the pumping unit.

When the surface of in-flowing water is higher than the pump, a sluice valve and a pressure meter or vacuum meter should be added to the inlet pipeline of the pump. That is done for the sake of maintenance, repair and safety operation. Meanwhile, we have to install a sluice valve, a pressure meter and a check valve (prevent back flow) on the outlet pipe. They are used to display, control and monitor the normal operation of the pumping unit. The pump has to run under rated flow quantity and head.

Single stage double suction centrifugal pump installation instruction

Single stage double suction centrifugal pump installation requirements

1.1 Foundation
All pumping units are on the same foundation. The function of foundation is to support and immobilize the pumping unit, make it run stably, avoid severe vibration. Therefore, the requirements for the foundation are as follows:
1) The foundation for the whole pumping unit must be concrete. Its size must be same as regulated.
2) Leave some anchoring holes on the foundation. Pour concrete to the holes after the pumping unit has been put on its position. This way may take some trouble, but as the bolts have been put into the anchoring holes on the pump base beforehand during construction, the pumping unit can be installed fluently.
3) The foundation bolts should reach out long enough so as to provide enough room for adjustment of the pumping unit. Reach out length=the length of anchoring hole on pump base+the thickness of washers+the thickness of nuts+15~20 mm
4) Large pumping unit has no integrated pump base, but separate bases for pump motor and pump head. Both the two bases should be horizontal. You can measure it with gradienter or spirit level.
Single stage double suction centrifugal pump installation
1) Before installation, you should check if the pumping unit is damaged during transportation. If the pumping unit has an integrated base, You should check and confirm if there is relative shift between the coupling of pump head and the coupling of pump motor. If so, adjust to make them coaxial.
2) Adjust the pumping unit to make it horizontal and coaxial. You should prepare steel plates of different thickness or iron wedges for adjustment. Make adjustment on condition that the pumping unit is standing stably and the nuts are bearing some pressure. Don't tighten the nut when there is clearance around the foundation bolt between the foundation and the pump base.
3) When adjusting the pumping unit, you should take off the elastic pin (in case of pumping units with integrated pump base). If the coupling of pump head and the coupling of pump motor are independent from each other, you should adjust their relative position.

3 inch submersible deep well pump repair and maintenance

Pump maintenance

1) Check if the 3 inch submersible deep well pump base, pump head and motor are stable.

2) Check the conditions of meters and leading-wires. Check if the pipeline leaks or becomes loose.

3) Replace the lubricating oil for shaft bearing timely.

4) Check the performance and running conditions of the pump regularly and make a detailed record. If you find any problem, maintain it at once.

3 inch submersible deep well pump assembly and disassembly

1) Preparation before disassembly

1. Drain the liquids inside the pump case.
2. Dismantle the associated pipes that will hinder the disassembly.

2) Disassembly steps

1. Screw off the bolts on bearing gland at the discharge side and the nuts that connect the discharge casing, stuffing box and shaft bearing, take down the shaft bearing.
2. Screw off the round nut on the shaft; take down the bearing cone, the bearing gland and the bearing retainer one by one in order. Next, take down the stuffing box, including packing gland, packing ring and the packing, etc.
3. Dismantle and take down the O shaped seal ring, shaft sleeve, balance disk and the key on the shaft one by one in order. Then, take down the discharging casing, including the last stage of guide vane and the balancing sleeve.
4. Having dismantled the last stage of guide vane and the key, next we dismantle the middle section of the pump, including the guide vane. Dismantle the remaining stages of impellers, middle sections and guide vanes in the same way, until the first stage of impeller is dismantled.
5. Screw off the nut that connects the suction section and the shaft bearing, and the bolts on bearing gland; dismantle the shaft bearing (the coupling should have been dismantled beforehand).
6. Take the shaft out of the suction section, screw off the fixing nuts on the shaft. Dismantle the bearing cone, O shaped seal ring, shaft sleeve, bearing retainer and so on one by one in order.

By far, you have finished dismantling most of the 3 inch submersible deep well pump. But during the above process, there are still some accessories connected together. Usually, you can dismantle those accessories by screwing off their bolts or nuts.

The order of assembly is generally in contrary to the order of disassembly.

Horizontal multistage centrifugal pump installation

1. Preparation before installing horizontal multistage centrifugal pump

1) The foundation for the pump should be strong enough. Its quality should be about 3 to 5 times of the quality of the pumping unit.

2) Inspect the pump head and the motor to see if it is damaged during transportation; inspect if any accessory of the pump is lost.

3) Prepare tools and hoist.

2. Installation sequence

1) Put a steel sizing block and an iron wedge under the pump base. Use the hoisting hooks to hold the four corners of the pump base, pull the base up above the foundation, and then slowly put it down on the foundation, making sure it faces each screw hole correctly.

2) Make the base flat, tighten the foundation bolts, and pour liquid toward the foundation.

3) Adjust the pumping unit. There should be 3mm to 5mm clearance between the coupling of the pump and the coupling of the motor, when the coupling reaches the furthest distance on pump shaft. The axial lines of pump head and motor should coincide. Feeler gauge can be used to measure the evenness of clearance between the cross sections of the two couplings, allowable error 0.06mm. Ruler can be used to measure at any direction around the two couplings. The allowable error for clearance between external surfaces of the two couplings and the ruler should be 0.08mm. If the above requirements are not meet, you can use adjustable pads to adjust it.

4) Connect the outlet pipes, add vacuum meter and pressure meter to the suction pipe and the discharge pipe respectively.

Horizontal multistage centrifugal pump starting, running and stopping

Starting:

1) Before starting the pump, check if the oil level of shaft bearing is normal and then lubricate the bearing with dilute oil.

2) Before starting the pump, you must check if the motor is rotating in the correct direction.

3) Before starting the pump, turn the coupling of the pump with hand to see if the rotating parts rotate flexibly.

4) Check all the meters, gauges, valves and instruments to see if they are normal.

5) Before starting the pump, you should inject water into it or exhaust the air inside and turn off the sluice valves and pressure meter switch on the outlet pipe of the pump.

6) When the pump has been started, turn on the switch of pressure meter and the switch of vacuum meter. Gradually turn on the sluice valves on the outlet pipe of the pump until the pointer of pressure meter moves to the position we need.

Running:

1) When the pump is running, pay attention to detect the temperature of the shaft bearing of the water pump. The temperature should not rise more than 35 degrees centigrade on average. The maximum temperature should not exceed 75 degrees centigrade.

2) Note to add oil frequently to the water pump when it is running.
3) It is normal if the packing chamber leaks water 10 to 20 drops per minute. If the leakage is beyond this range, you should adjust the packing gland.

4) Check the coupling regularly.

5) If the horizontal multistage centrifugal pump goes out of order during the operation, you should stop it at once and repair it with reference to the Trouble-shooting Table.

Stopping:

Slowly turn off the sluice valves and pressure meter switch on the water outlet pipe, and the vacuum meter switch on discharge pipe. After that, cut off the power source for motor.

WFY non-negative pressure water supply equipment installation finished

We have just finished installing WFY non-negative pressure water supply equipment for our client. Flow quantity 32 cubic meters per hour, head 40 m, motor speed 2900 r/min. This water supply equipment is capable of avoiding negative pressure when providing water for high level buildings.

Following the the warranty agreement for this product.

Please bring along the Invoice and Warranty Card when you come to our company or our distributor for free maintenance service. We only offer such service as regulated in this Warranty Agreement.

We offer one year warranty to our products, starting on the day when the product is sold. That is, the date on the Invoice or Warranty Card. If you can provide neither the Invoice nor the Warranty card, we shall refer to the production date on the nameplate of the pump for sure. For failures caused by quality problems of the pump during the warranty period, we offer free maintenance. But this warranty agreement shall not cover vulnerable parts that are worn out normally, such as the impeller, impeller ring, shaft bearing, shaft sheath and rubber shaft bearing, etc.

The user shall not enjoy free maintenance stated in this agreement under the following conditions:

1. The user used to dismantle the product by voluntarily within the warranty period.
2. The users uses the product in conditions not conforming to the regulations in User Manual, or uses it for liquids not allowed in the Contract.
3. Failures caused by the user not operating or installing the product according to the User Manual.
4. Damages caused by corrosion from liquid or gas, etc.
5. The motor runs in short of water inside or with default phase. The motor sinks into mud during installation, leading to the burning of stator windings.
6. Warranty has expired.

We take it for granted that the user understands and accepts this agreement since the day he starts to use the water supply equipment he purchased.

ISGB easy-disassembly pipeline vertical centrifugal pump

Product overview

ISGB vertical centrifugal pump is successfully developed on the basis of ISG pump. It has novel structure, manufactured with advanced technology.

This vertical pump is bravely designed with ground-breaking overall structure in particular. It has independent shaft bearing.

This pump has impellers made with excellent hydraulic mode, diminishing the disadvantage of large axial force in previous vertical pumps. It adopts Y series standards general motor, solving the difficulty in exchanging motor of former vertical pumps with lengthened shafts. Meanwhile, it has 100% easy-disassembly structure, solving the difficulty in exchanging shaft bearings, mechanical seals, impellers and pump shafts of large-power water pumps.

This pump runs more stable, has a longer service life. It is easier to maintain than similar products in domestic markets. These advantages are irreplaceable. It ranks in front among vertical pumps in China, with domestic leading technologies. It is the most ideal substitute for all kinds of regular centrifugal pumps, including ISG type vertical centrifugal pump, IS type centrifugal pump, S type double suction pump, etc.

Product features

1. Vertical structure, easy for installation and debugging. Its motor is specially designed to be connected with pump head via a connector, ensuring concentricity. The floor area needed for it has been greatly reduced in size, thus saving 30%~60% of investment on pump house construction. It stands stable on feet. Its compact structure, exquisite casting and precise treatment on appearance give this vertical centrifugal pump a new sense of beauty, endowing it artistic charm and making it comparable with vertical centrifugal pump from renowned factories abroad.
2. It has Y series standards general motor manufactured by famous factories in China. It runs stably and noiseless.
3. with precision shaft bearing of famous international brand, high precision, good reliability and long service life.
4. Its impellers adopt the most excellent hydraulic mode in the 1990s that balances axial force by itself, profoundly prolonging the service life of pump shaft bearing and mechanical seal.
5. The shaft bearing inside the bearing seat of the motor has oil inlet hole and oil outlet hole. The holes make it convenient to maintain the shaft bearing.
6. Disassemble hard coupling in the middle makes the pump start with no vibration or noise.
7. The material for its mechanical seal are stainless steel, tungsten carbide, fluororubber, etc. This seal resists high temperature and high pressure, has long service life, prevents leakage, causes no wearing to shaft, and ensures clean working environment.
8. The pump lid has a special structure. This enables you to easily take out the bearing seat, pump lid, pump shaft, impellers and other assembling units only by dismantling the hard medium coupling and the screws on pump lid. You don’t need to dismantle the motor, pump body and pipeline, making the pump easy and convenient to maintain.

Submersible sewage pump model selection

Most of the submersible sewage pumps we see on markets today call themselves non-clogging sewage pumps. But are they really non-clogging? That depends. Clients usually find their sewage pumps get clogged soon after being put into use in the sewage pool. As a result, the motor of the pump burns out.

Reliability is of key importance for sewage pump model selection. We need the sewage pump to deliver fluids that contain solid materials. That calls for higher standards for submersible sewage pump in terms of mechanical seal, motor capacity, shaft arrangement and selection, than common pumps.

To prolong the service life of submersible sewage pumps, most manufacturers at home and abroad are trying to find a solution with protective system.

It is necessary to add protective system to the submersible sewage pump. But this is not the key to the problem.

To solve the problem thoroughly, we should work on the mechanical seal and overload of the motor.

Notes for submersible sewage pump model selection

The flow quantity of submersible sewage pump should be counted by seconds. If you need to adjust the flow quantity, you can choose according to the max rated value.

We should decide the head of the pump according to the lifting height and loss in pipeline. If you need to deliver mixed fluids containing solid materials, such as sands, generally you should choose self-priming submersible sewage pump. Before placing the order, you had better get a good knowledge about the seal performance and load capacity of the pump.

Submersible sewage pumps used in buildings include submerged sewage pump, vertical submersible sewage pump and horizontal submersible sewage pump. For the last two types, we need to set a shock insulation base, which would take some ground space. For that reason, these two types are rarely used in buildings.