The use of water pump set requires attention to multiple aspects to ensure their safe operation and extend their usage time. The following are key precautions:
1、 Installation and commissioning of water pump unit
Foundation fixation ensures that the water pump unit is installed on a flat and stable foundation, avoiding vibration or tilting. Check the tightness of the anchor bolts.
The alignment and connection of the motor and water pump shaft must be strictly aligned to avoid vibration and bearing wear. The inlet and outlet pipelines should be firmly supported to reduce the impact of pipeline stress on the pump body.
Electrical safety, motor wiring must comply with regulations, grounding resistance ≤ 4 Ω, and prevent leakage risk. Install overload protection and phase loss protection devices, and test their reliability.
2、 Check before starting the water pump set
Mechanical state, manually rotate the water pump unit to check if it rotates flexibly, without any jamming or abnormal noise. Check the bearing lubrication to ensure sufficient lubrication.
Pipeline and valves, confirm that the inlet valve is fully open and the outlet valve is closed before starting. Check whether the pipeline leaks and whether the filter screen is clean.
Medium adaptability, confirm that the conveyed medium is compatible with the material of the pump body. The high-temperature medium needs to preheat the pump body to avoid thermal shock.
3、 Water pump set operation management
Start stop operation, centrifugal pump: first close the outlet valve, then slowly open the valve to adjust the flow rate after starting; When stopping the pump, close the valve first and then turn off the power.
Submersible pump: Do not operate without water, ensure complete immersion in liquid before starting.
Pump unit operation monitoring, monitoring current, voltage, vibration, noise, and temperature rise. Observe whether the pressure gauge and flow meter are stable. If there are any abnormal fluctuations, stop the machine for troubleshooting.
Avoid abnormal working conditions and prohibit operation with excessive flow or head. Anti cavitation: Ensure sufficient inlet pressure to avoid liquid vaporization.
4、 Daily maintenance and upkeep of water pump set
Regularly lubricate and replace bearing grease according to the instructions. Oil lubricated bearings require regular inspection of oil quality and timely replacement of deteriorated lubricating oil.
Seal maintenance, check whether the mechanical seal or packing seal leaks, adjust the tightness of the gland or replace the seal. When not in use for a long time, drain the liquid from the pump to prevent seal adhesion or corrosion.
Cleaning and rust prevention, cleaning impurities inside the impeller and pump casing. Apply anti rust paint to exposed metal parts to prevent corrosion.
5、 Special environmental precautions for water pump set
In high/low temperature environments, the cooling of the high-temperature pump needs to be strengthened. Drain the liquid after stopping the pump in a low-temperature environment to prevent freezing and cracking of the pump body.
Corrosive media, use corrosion-resistant materials, and regularly check the wall thickness of the pump body. Rinse the pump chamber after shutdown to avoid residual medium corrosion.
Submersible pumps/deep well pumps, regularly check the insulation performance of cables, and prevent leakage under waterproofing. Monitor water level to avoid dry running damage caused by emptying.
When using a water pump set, it is also important to establish a running log to record data such as current, pressure, and maintenance time. Develop a periodic maintenance plan. By standardizing operation and scientific maintenance, the failure rate of water pumps can be reduced and energy efficiency can be improved.
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