Low water submersible pump JDP-250Low

The water pump pressure controller is an economical intelligent pressure switch that integrates pressure measurement, display and control. It has the characteristics of high cost performance, delay start, anti-vibration, high control accuracy and long service life. The upper and lower limit alarm points can be set, and it has multiple functions such as one-key error clearing and three display unit switching. Working principle of water pump pressure controller The working medium (oil, gas, water) of the water pump pressure controller directly acts on the metal diaphragm. The deformation of the metal diaphragm reflects the pressure of the working medium, and at the same time outputs a detection signal or a control signal. The pump pressure controller is generally a metal 316L diaphragm sensor, which can be used for neutral oil, gas medium and water. The setting value of the controller is adjustable, and the adjustment range is -0.1 ~ 40MPa, and the range is optional. The water pump pressure controller needs to be adjusted. There is an adjustment screw on it. If you want the water pressure in the pressure tank to reach 0.3MPa, turn on the pump to fill the pressure tank and watch the pointer of the pressure gauge. When it reaches 0.3, adjust the pressure control. The screw should be counterclockwise. When the sound is heard, the pump stops working, that is, the pressure is adjusted. The lower pressure difference is fixed and cannot be adjusted. Generally, the pump will start automatically when the pressure drops to 0.15MP. When adjusting pressure, it depends on how high the rated pressure of the pump is. The set pressure cannot exceed the pressure of the pump. When filling the tank for the first time, the tank should be filled with air, that is, do not exhaust when the pump fills the tank. The water is not filling the tank, there must be air in it, otherwise the pump will start and damage the pump frequently. The usage setting of each brand may be different, but the principle is the same. Correction methods of water pump pressure controller First, Adjust the pressure limit to 1.5MPa (up switch value), send out the contact signal, and its operation steps: 1. Open the cover and loosen the lock. 2. Turn the setting value adjusting screw clockwise to make the setting value change from large to small until the switch contact is switched at 1.5MPa. 3. Tighten the lock. Second, Adjust the lower pressure limit to 0.5MPa (lower switching value) to send out the contact signal, and its operation steps: 1. Open the cover and loosen the lock. 2. Turn the setting value adjustment screw counterclockwise to increase the setting value from small to large, until the switch contact is switched at 0.5MPa. 3. Tighten the lock.  The adjustment methods of the water pump pressure controller are as follow 1. The method of setting the control pressure (1) Short press the operation key, turn off the operation indicator, and close the pressure control system. (2) Set control upper limit/lower limit: Short press SET key once to enter the lower limit setting state (corresponding to the lower limit indicator light), set the value by (▲)(▼), after setting the lower limit, short press SET key to enter the upper limit setting, The setting method is the same as above. (3) After the setting is completed, press the SET key to automatically save the set value to the computer chip (after parameter modification, no key operation within 5 seconds will automatically save the current parameter setting). (4) Press the operation key again (corresponding to the operation indicator light), and the motor starts to work. 2. Unit switching method: Turn off the running key, and short press the increase key (▲) to switch the unit between MPa, Kg/cm2, and PSI. After setting, turn on the running indicator. 3. Zero reset function: Turn off the running key, long press the decrease key (▼) for 5 seconds to clear the current pressure value and correct the zero error. After setting, turn on the running indicator. (The pressure switch must not apply pressure when using this function. water pump pressure controller circuit diagram Some of them are stand for: configuration of empty switch (QF), contactor (KM), overload relay (FH), fuse (FU), auxiliary contact (FH), button (SB2), indicator light (RD), relay (KA1), relay (KA2), fault indicator (YE), stop button (SB1). water pump pressure controller installation wiring method Please check the back of the product, first connect the cable lead marked "Motor" (with 220 electricity between the output lines) to the 226 power supply end of the pump, and then connect the cable lead marked "Power" to the power supply. So as not to cause electric shock.As one of J&T INDUSTRY's multiple product series, automatic water pump controller series enjoy a relatively high recognition in the market. It manufactured based on high-quality materials and advanced technology, has reasonable structure, excellent performance, stable quality, and long-lasting durability. It is a reliable product which is widely recognized in the market. J&T INDUSTRY has a number of professional dust-free production workshops and multiple advanced automated production lines. We could meet customers' large-quantity orders and guarantee timely delivery. Other related automatic pressure controller for water pump are as below:Automatic Electronic Water Pump Pressure Switch Controller JTDS-1Automatic Electronic Switch Water Pump Control with Pressure Gauge JTDS-8Automatic Water Pump Electronic Switch Control Pressure Controller JTDS-9A 

The swimming pool makes our life more enjoyable, and also has the function of strengthening the body. In our lives, swimming pools can be seen everywhere. I believe everyone has a lot of fun in the swimming pool. So what equipment does a seemingly ordinary swimming pool have? Following the editor will introduce the relevant knowledge of swimming pool circulation pump for everyone. Swimming Pool Pump Working Principle  Working principle of swimming pool pump: The pool circulation pump is composed of a water pump impeller, a water pump volute, a motor and a pump shaft connecting the center of the impeller and the motor. The impeller of a swimming pool pump is generally composed of two circular cover plates. There are several curved blades between the cover plates. The channel between the blades is the over-water blade groove. There is a round hole in the center of the front cover plate of the impeller , This is the water inlet of the impeller. When it working, first open the water inlet valve of the pump to fill the pump casing with water. Then, turn on the power of the motor, and the motor drives the pump impeller to rotate at high speed (usually 1450/2900 rpm). At this time, the water is thrown out of the impeller by centrifugal force, and is pressed toward the outlet of the pool circulation pump through the volute cover in the volute casing. At the same time, the center of the pump impeller is vacuumed due to the water being thrown out. Under the effect of atmospheric pressure, the water in the pool is continuously drawn into the center of the impeller along the pool circulation pump suction line (return line) of the pump. The function of rotating the impeller at high speed is thrown out of the impeller and input into the pressure pipe connected to the outlet of the water pump, thus forming a continuous water delivery from the swimming pool pump.                Swimming pool pump Circulation for SUA200-Ⅰ                Swimming pool pump Circulation for SCP200                Swimming pool pump Circulation for 48SUP0753C-I Swimming Pool Pump-Construction And Installation Points 1. The construction and installation of the circulating water pump should comply with "Code for Construction and Acceptance of Compressor, Fan and Pump Installation Engineering" GB50275-98. 2. The swimming pool pump foundation is constructed according to the design drawing. The anchor bolts of the stable motor should be firmly integrated with the concrete foundation. The pre-embedded holes should be cleaned before pouring, the bolts should not be skewed, and the mechanical strength should meet the requirements. 3. The pool circulation pump base should have shock-absorbing rubber pads. The pads are in tight contact with the base surface, and the housing has separation bolts, hot-dip electroplating. 4. The water pump is connected to the motor drive shaft, and the axial and radial allowable error does not exceed the specified value. 5. Pressure gauges and valves should be installed at the inlet and outlet of the pump. 6. Pipeline connection: connect the reducing pipe/telescopic pipe directly to the pump, and install the piping of the pump after the pump is leveled and stabilized. The pump equipment must not bear the weight of the pipeline. The installation sequence is that the flexible shock absorber joints and valves are tightly connected with the water pump in turn. 7. The piping flange should be consistent with the flange of the pump and valve, the direction of the valve mounting handle should be easy to operate, the elevation is consistent, and the piping is neatly arranged. 8. Electrical connection: comprehensive protection against accidental contact, the junction box should be suitable for flexible connection. The above is the relevant knowledge about swimming pool circulating water pump introduced by J&T INDUSTRY CO.,LTD. editor. After reading the introduction above, I believe you have a new understanding of the swimming pool equipment. The swimming pool is used a lot in our lives. Of course, the swimming pool brings us too much fun, so it is good to have more understanding of the swimming pool equipment.

The so-called tap water pump actually refers to the general name of the water pump used to boost the tap water twice. The tap water pump does not refer to a single model or a certain type of pump, as long as it is used to pressurize the tap water twice, it can be called a tap water pump. Generally, the most typical one is a certain type of centrifugal pump or a certain type of pipeline pump. These are more common tap water pumps. As shown in the figure below, various types of booster pumps can be used to boost the tap water for the second time, and they can all be called tap water pumps.Buying a tap water pump is actually not as simple as buying a pump. You must understand your own situation. Remember to buy a pump of a certain power according to the so-called experience or self-righteousness. It is often impossible to solve the actual water problem or even use it. There are many reasons for the factors causing insufficient stress. If you have any technical questions, purchase requirements, cost budgets or program construction about the tap water pump, you can consult us at any time, we can quickly answer or provide solutions and product quotations for you. It is worth noting that it is not to say that a booster pump must have a good boosting effect. There are many situations where the water pressure is low or there is no water. For example, the aging of the pipeline causes the increase of the head loss; or the overall water supply of the pipeline itself is too small, that is, the flow rate is not enough. In these two cases, the effect of installing the pump directly is actually not obvious. Especially when the pipeline water supply is less than the water demand of all users, the boosting effect is not obvious or even ineffective. For example, the municipal water supply is only 5 tons of water per hour, and the user's water consumption is about 8 tons per hour. At this time, no matter how large the booster pump is installed, the problem cannot be solved. In this case, only a larger pool is installed, and then From the secondary pressurization of the pool, select the appropriate rated flow and head of the booster pump with the corresponding automatic control system and voltage stabilization device to achieve automatic water supply. Below we introduce the following general calculation process and method for the selection of tap water pump, and these points need to be noted when selecting the model.  1. How much water (that is, flow) to use per hour, if the flow rate of the booster pump is less than your actual water consumption, when the water consumption peaks, it will also mention that the pressure is not enough. The flow should be calculated comprehensively according to the number of water users and the nature of water use. The approximate calculation formula is that the formula is Q = [m (number of people) × q (per capita daily water quota)] ÷ t (daily water consumption time) × k (hourly change coefficient), q, t, k parameters can be designed by Chinese building water supply and drainage The manual is selected according to the corresponding water use occasion. Flow calculation is more complicated and requires industry experience. It is recommended that you contact us to assist calculation. If you want to calculate the selection by yourself, you can enter the program center to refer to the boosting solutions of different industries, which have detailed calculation methods. 2. How high or how far the water needs to be transported (ie, head). In layman's terms, head means pressure, and every 10 meters of head can produce 1 kg of pressure. The calculation of the head is relatively simple. If the pipeline is not very complicated, it is generally based on the height of the floor + the headroom of 20 meters at the end. 3. The tap water pump is generally used as a fully automatic booster pump. A single pump cannot achieve the functions of automatic start and pressure stability. 4. The above-mentioned flow and head refer to the rated flow and rated head. The rated flow must be greater than or equal to the maximum flow we may use every hour. The rated head is the head that can be reached under the rated flow. However, most pumps on the market are now marked with the highest head and maximum flow, which is easy to mislead some consumers, because according to the parameters of the maximum flow and maximum head, the pump is often low in power and cheap, but the actual effect is greatly reduced Not even used. The choice of the general household tap water pump is much simpler. If there is water coming out of the house during peak hours, but the water pressure is low, choose a one-inch (25mm) or six-point (20mm) caliber household automatic booster pump. This kind of household automatic booster pump has a flow rate of 1.5 tons/hour, a head ranging from 15-20 meters, and a power below 550w. If there is no water from the faucet at home during the peak period, if the booster pump is installed at home, the effect may not be ideal. It must be installed in a place where water comes out. It is usually recommended to install it to the bottom floor. If it is a residential area in a town, if the water pressure of only the high-rise households is not enough, first of all, we should negotiate with the entire community to solve the collective secondary boosting, because a single household installing a booster pump will affect other users who have sufficient water pressure. Of course, if the negotiation fails, you can only solve it by yourself. Then you can choose to install according to the above selection method. If it is only difficult to cool the water heater, just select the 90-150w automatic booster pump for the water heater.  By the way, if you have the water well and just need to pump the water for home use, you also can select the manual hand pump. It is welcomed by the customers. A funny exercise way to pump the water manually with your families.                Hand Operated Water Pump Hand Pump JBSA                High-quality Manual Hand Pump Water Pump JS-32                Plastic drinking water pump JM-01 

J&T Industry Co., Ltd. is a leading specialists in the manufacture of water pumps and its accessories. Today, we will share you something about the knowledge of one of the water pump accessories we sold-the common faults and solutions of automatic water pump controller. The common faults of automatic water pump controller First, the system can not hit the water A. Check whether there is water in the pool, whether the motor is running, the motor steering and the inverter may be redirected; B. If the check valve is at the front end of the motor, if there is water at the front end of the check valve, and the water in the motor is drained; C. Disassemble the water pump and check whether the welding impeller is broken. This situation is generally noisy. Second, the pressure cannot be balanced, how to solve it If the water consumption fluctuates greatly, or if the water supply pipe is too thin, it is not easy to handle. You can try to reset the PID parameters of the system and change the position of the automatic water pump controller. Third, The switch often trips or fails to close Failure analysis: 1. Switch aging 2. Switch selection is not correct, 3. Pump jamming or motor circuit problems 4. Line aging, short circuit, too small or missing phase. Solution: Turn off the power of the control system, and then use a winding motor to check whether the three phases of the circuit are short-circuited or grounded (note during measurement: the output end of the inverter should be removed to avoid burning the inverter output module during testing Bad); Turn the motor by hand to see if it is stuck; replace the switch if necessary. Four, the contactor is noisy Failure analysis: due to the sand rust on the armature surface of the contactor, the contact surface is uneven, and then the lack of phase causes the contactor, switching frequency conversion and other components to burn out. Solution: Turn off the load switch of the contactor, and quickly open and close the contactor manually. After repeated many times, if the sound is still not removed, the armature needs to be removed and smoothed or replaced with a new contactor. Firth. Thermal relays often trip Failure analysis: 1. Motor overload 2. Selection mismatch 3. Aging or main line is too small Solution: See if the selection of the motor and the thermal relay match; check whether the motor is overloaded, and determine whether the phenomenon occurs during normal use of the motor. If necessary, replace the new main line. Sixth, the inverter often reports faults Fault analysis: 1. Incorrect parameter setting 2. Aging of the inverter 3. Overload of the water pump 4. Missing phase 5. Loose circuit Solution: Reset the inverter first. If the same fault occurs again within a short time, it means that the inverter cannot continue to work until the work is released. The fault code generated by the inverter is recorded, and the fault is solved according to the manual, and the circuit is all tightened once; measure the three-phase current to see if it is balanced. The lack of phase of the power supply causes the input end of the frequency converter to burn out or the frequency conversion to age, and the frequency converter needs to be replaced. Seventh. The output and input points of the automatic water pump controller are abnormal or cannot operate normally Failure analysis: 1. The input and output points of the automatic water pump controller frequently operate for a long time, causing the internal contacts of the controller to burn. 2. Because the contact passes through a strong current. 3. Program error or controller has burned out Solution: Need to update the automatic water pump controller's program, change the burned input and output points to the spare contacts through software, and replace the controller if necessary Eighth. Unstable pressure and large fluctuations Failure analysis: 1. The parameters of the controller are not adjusted well; 2. The efficiency of the pump is too low Solution: 1. Reset the controller parameters; 2. Replace the more efficient water pump Ninth, the system is good and bad, can not run normally Failure analysis: the line is loose; the components are aging Solution: Check the line, tighten the line, check the components, and replace if necessary.