Public Water Supply Equipment

The pressure sensor or flow meter will be converted into electrical signals into the automatic control box, the signal through the automatic control box after the operation feedback to the inverter,
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Product Details

Principle:

The pressure sensor or flow meter will be converted into electrical signals into the automatic control box, the signal through the automatic control box after the operation feedback to the inverter, the inverter by changing the frequency to change the motor speed, so as to change the pump at any time, will be the operation of Constant water pressure at a certain point to be determined, and the flow rate according to the size of the water changes, not only to achieve energy saving, but also safe and reliable.
The device is the parallel connection of multiple pumps, when the water consumption is less than or equal to a single pump working flow, the variable frequency pump starts to work, the water consumption gradually increases beyond the single pump working flow, the power frequency pumps have been put into operation, while the variable frequency pump Play a trace role in regulation. When the amount of water is gradually reduced, one by one to stop working frequency pumps, until the variable frequency pump.
The unit is also equipped with a pressure pump or pressure tank, when the amount of water is very small, the pressurized water stored in the pressure tank or pressure pump to provide pressure water to maintain the system, variable frequency pump to stop working, its energy saving effect is better.
The unit is composed of one to four main pump, a constant pressure pump (or pressure tank), water mains, valves, automation instruments, automatic frequency conversion control box and so on, so it is easy to install and compact. Ex-factory rigorous testing, stable performance.

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Causes of failure and troubleshooting

Failures

Possible Causes

Recovery

No water pump

a. The outlet valve is not open, the outlet line is blocked, and the impeller runner is blocked
b. Motor running in the wrong direction, motor phase loss is very slow
c. Suction tube leak
d. The pump is not filled with liquid and there is air in the pump chamber
e. pipeline resistance is too large, pump type selection is wrong

a. Check and remove the obstruction
b. Adjust the motor steering, tighten the motor wiring
c. Tighten each sealing face nut to eliminate air
d. Open the pump cover or open the exhaust valve to drain the air
e. downtime check, adjust
f. reduce the pipe bend, re-select the pump

Insufficient pump flow

a. Press 1. Check the cause
b. pipe, pump impeller runner partially blocked, scale deposition valve opening insufficient
c. Low voltage
d. impeller wear

a. Press 1. to exclude
b. Remove the obstruction and readjust the valve opening
c. Regulated
d. Replace the impeller

Power is too high

a. More than the rated flow
b. Pump bearing wear
c. The impeller is entangled with fibers

a. Adjust the flow, close the small outlet valve
b. Replace the bearing
c. Clear the fibers

Noise vibration

a. The pipe support is not stable
b. liquid mixed with gas
c. cavitation
d. bearing damage
e. Motor overload heating operation

a. Secure the pipeline
b. increase suction pressure, exhaust
c. reduce the degree of vacuum
d. Replace the bearing
e. Adjust Press 5

Motor is hot

a. Flow is too large, overloaded operation
b. Rubbing
c. Damaged motor bearings
d. Insufficient voltage

a. Flow is too large, overloaded operation
b. Rubbing
c. Damaged motor bearings
d. Insufficient voltage

Water pump leaks

a. Mechanical seal wear
b. The pump body has sand holes or cracks
c. sealing surface is not flat
d. Loose mounting screws

a. Change
b. welding repair or replacement
c. Trimming
d. Tighten


Service
The company can help user choose proper product.
We provide life-long maintenance service.

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