Flood control pump specification parameter table

Electrical cabinet weight: 15KW,31.6kg 22kw35.8kg,30kw44.6kg,37kw46.6kg,45kw62kg,55kw71kg.

The complete set includes: pump main machine (cable standard 20 m), domestic variable frequency drive, stainless steel electrical cabinet assembly, 1 pair of quick connectors, 1 hose clamp, float ball assembly, etc.

Instructions for use

The high-speed axial flow pump is composed of a pump and a variable frequency drive. The manual in this section focuses on the simple operation of the pump and the variable frequency drive. Generally, this product can be operated and used. If professionals need to adjust the parameters of the variable frequency drive, they should read the instructions for the use of the variable frequency drive (or frequency converter) in detail.

PRG和 JOGIt is programming and functionality with keys, these three keys non-professionals do not touch it.Green RUNis the start key, or power-on key,《 《 《is the display toggle key,The red stop.The key is the stop key, or the shutdown key. The number displayed by the liquid crystal display by default is frequency. The frequency and speed are linear. The frequency is high and the speed is fast, while the frequency is low and the speed is low.Round knob and up and down keysUsed to adjust the frequency (or speed).

These four keys are in the lower part of the panel. The upper row is the power indicator and the running indicator respectively. The next row is the stunning start key and the red stop key respectively.

The variable frequency drive is generally debugged at the factory and does not need to be adjusted separately. Just press the on key or the start and stop keys on the operation panel, and do not press other keys. Do not move the internal wiring of the electrical cabinet easily. Check all the wiring terminals in the cabinet before starting up. If there is any looseness during transportation, tighten the wiring terminals one by one. If you need to adjust, you can only have professional knowledge of frequency converters, and you can adjust the parameters of the variable frequency drive only after carefully reading the variable frequency drive manual and this manual. Otherwise, the variable frequency variable frequency drive program may be confused and can no longer be used, or cause damage.

The three motor lines of the synchronous motor axial flow pump must be connected to the three terminals of the output U V T of the matching variable frequency drive, and cannot be directly connected to the power supply AC380V, otherwise the motor coil will be damaged and the pump will be scrapped. AC380VThe power supply is three-wire connected to the power input of the variable frequency driveR   S    T On. If it is a three-phase four-wire input of the power grid, do not connect the neutral line.At the incoming end, in case of unbalance of the zero line, there may be potential difference.The problem.

P-,P, p1Empty, no wiring,One is the grounding wire. In principle, it is connected to the ground wire where it is located, not to the neutral wire of three-phase four-wire.

The frequency conversion controller is placed in the stainless steel electrical cabinet, and there are control circuits, cooling fans, circuit breakers, leakage protection, buttons, indicator lights, etc. The electrical cabinet has a rainproof function for outdoor use. In rainy days, attention should also be paid to spray, moisture and moisture.

The electrical cabinet is equipped with a power input socket and an output socket connected to the pump motor. There are notes below the socket for the input power end and the output pump end, which cannot be inserted incorrectly.

After the synchronous motor axial flow pump is equipped with a variable frequency drive, it has automatic protection functions such as overvoltage, overcurrent, overload, and overheating, and works with a wide voltage and keeps the speed synchronized. When there is no water at the pump inlet, the system will automatically detect and determine the entry into the protection program, and automatically shut down to avoid damage to the motor caused by no water cooling.

Each specification of the pump is matched with the corresponding variable frequency drive, the same specification (speed, flow, head and power) pump variable frequency drive can be exchanged, different specifications of the pump can not use the same variable frequency drive, because the motor parameters are not the same, some speed is not the same, can not be exchanged. If it is replaced incorrectly, it will cause damage to the variable frequency drive or pump.

The relationship between the flow, head and power of the axial flow pump is different from the hydraulic model of the centrifugal pump, and there is a big difference. When the axial flow pump used for low lift works at the same output frequency of the variable frequency drive, the lower the lift, the higher the flow rate, the lower the power consumption. If the lift at the work site is relatively low, the working frequency can be appropriately adjusted to set The highest frequency runs to increase the flow rate. However, the higher the lift is used, the greater the input power will be, which can reach 3 times the power at low lift. When the lift is high to a certain extent, when the input power will exceed the rated maximum allowable value, the variable frequency drive will have over-current protection and shut down. At this time, it is necessary to appropriately lower the working frequency of the variable frequency drive, reduce the rotating speed, and appropriately reduce the power to make the working current within the allowable range of the variable frequency drive, this allows the pump to operate normally. But this needs to be done under the operation of skilled staff with inverter expertise.

The rated lift of low-lift axial flow pump is generally 7-10 meters, which is below 15 meters, except for some up to 15 meters. If this low-lift axial flow pump is used for more than 15 meters, it is not appropriate, which will cause high power consumption and low efficiency. If the head is more than 15 meters, the flood control pump with high head should be selected. The pump head with high head is about 20-50 meters, and some are even higher.

In addition, the horizontal length of the water belt connected to the pump outlet is calculated according to the loss lift of 7-10 meters per 100 meters, that is to say, when the length of the water belt transported is 100 meters, it is equivalent to the working lift of 7-10 meters. When the long water belt is connected, if it is more than 200 meters, the actual working lift of the pump will exceed the rated lift, causing the variable frequency drive to stop for protection. At this time, the working current is within the allowable range of the variable frequency drive, so as to ensure the normal operation of the pump. Or re-elect to use high-lift flood pumps.

Instructions for Use

1. The pump is used for drainage, and the depth of water is generally 1-5 meters. Before use, check whether the electric pump is in good condition, whether there is looseness, seepage and oil leakage at each connection, whether there is any accidental damage such as pressure and scratch of cable, etc., and measure the insulation resistance of the electric pump with a megohmmeter, which should be> 50M2 in cold state and> 2M2 in hot state.

2. The pump requires 15% of the power supply voltage. When the output of the variable frequency drive is stable and the voltage is too low, the input current will increase and reach the high setting value of the protection current, causing the variable frequency drive to stop working due to protection. At this time, the manual working state should be used instead, and the pump speed should be lowered a little to reduce the working current and the power.

3. The pump shall be equipped with corresponding electric switch or switch separately. The grounding terminal on the variable frequency drive and the pump housing shall be connected to the ground wire. The yellow and green double-color line in the outgoing line of the electric pump shall be the grounding wire, which must be reliably grounded.

4. The lead wire of the electric pump is strictly prohibited from being pulled to prevent damage to the insulation and cannot be used. When the length of the cable with the belt is not enough and needs to be connected, the wire diameter of the connected wire must be greater than or equal to the original wire diameter. The joint shall be sealed with waterproof adhesive tape.

5. Before the electric pump is officially used, connect the variable frequency drive power supply, press the start key, whether the operation is normal, check whether the rotation direction of the pump impeller is correct, and pay attention to turning for a short time. If the steering of the electric pump is wrong, the water output will clearly show that it is small. Just adjust any two of the three wires from the output terminal of the variable frequency drive to the electric pump. Be careful not to exchange the three wires of the power input to the variable frequency drive. It is useless to exchange the input power cord without changing the direction of rotation.

6. When installing the discharge pump, string ropes at the hole ring. It is strictly prohibited to lift the cable to lift the discharge pump, but it should be more than 1 meter from the bottom of the water to prevent sediment from being sucked and damaging mechanical seals, impellers and other components.

7. When using a floating ball to lift the electric pump, pay special attention to the water level drop, especially when working in the underground, do not run dehydrated, otherwise it will burn out the motor and other components. Can not be put into the bottom of the sludge work, resulting in poor heat dissipation and damage to the pump motor.

Pump maintenance and maintenance

1. After the electric pump has been running for 3000 hours, the wearing parts must be replaced once (such as bearings, sealing rings, mechanical seals, cooling lubricating oil, etc.), otherwise the mechanical parts will cause greater losses after damage.

2. If the electric pump is not used for a long time, it should be cleaned and dried. Depending on the peeling of the paint on the surface, it should be placed in a ventilated and dry place for proper storage.

Diagnosis and Operation Countermeasures of Common Faults of Variable Frequency Drives