RO High Pressure Pump DHP0.8

Why do you need to install a filter device before the high pressure water pump？

In order to extend the service life of the high-pressure water pump and maintain its pumping stability, please make sure that the medium working condition is consistent with the required working condition. In order to avoid particle wear on the high-pressure water pump, it is recommended to install an appropriate filter before it.

What kind of filter is suitable before the high-pressure water pump?

The main filter must filter 99.98% of particles above 10μm

How to avoid cavitation and dry running of high-pressure water pump?

It is recommended that you install a low-pressure protection switch before the high-pressure pump inlet. Please refer to the parameter table in the technical specifications of the high-pressure water pump for the minimum inlet pressure of different types of pumps; Ensure that the inlet pipe is not smaller than the inlet diameter of the high-pressure water pump.

What are the requirements for the frequency converter?

If the high-pressure water pump is used with a frequency converter, the frequency converter is required to be heavy-load constant torque, and the starting mode is constant torque starting. If the special frequency converter for water pump fan is not constant torque, it may not be able to drive the positive displacement water pump; For example, ABB's ACS510 series inverter may not be able to drive the DHP high pressure water pump. The same is true for other brands of water pump and fan-specific inverters, please pay attention to communicate with the inverter manufacturers for selection.

What do we need to pay attention to with this high-pressure water pump?

Please pay attention to the continuous inlet pressure, maximum peak inlet pressure, maximum continuous outlet pressure, and minimum outlet pressure operating ranges of different types of high-pressure water pumps. For details, please refer to the parameter table in the high-pressure pump technical specification. Ensure that the pressure when the high-pressure water pump is running does not exceed the range required by the specification.

What are the precautions for startup commissioning of the high-pressure water pump?

Before starting the pump, it is recommended that you thoroughly flush the pipeline and system to remove any residues or foreign objects that may be present. It is strongly recommended that you drain the air from the pump and system.

Test whether the direction of the high-pressure pump is consistent with the arrow mark on the pump. “I” represent the inlet of the high-pressure water pump, and “O” represents the outlet of the high-pressure water pump.

How to maintain the high-pressure water pump?

For a short shutdown of the high-pressure water pump within 3 days, there is no need to flush while keeping the pump full of overflow medium.

If the high-pressure water pump has been shut down for more than 3 days, it is recommended that you flush the pump with fresh water. When the high-pressure water pump has been shut down for more than 15 days, it is recommended that you flush the pump with fresh water containing fungicides.

If the high-pressure water pump is running under conditions of high salt content, it is recommended that you flush the pump with fresh water every time you stop.

How should the pump run under conditions of high salt content?

If the pump is running under conditions of high salt content, it is recommended that you flush the pump with fresh water every time you stop it.

What to do if the pump has abnormal noise and vibration during operation?

If abnormal noise and vibration occur during the operation of the pump, please stop the HP piston pump immediately and perform maintenance on it.

What to pay attention to when the back-end valve is closed?

It is forbidden to start the HP piston pump when the rear valve is closed, otherwise it will cause the safety valve to work, or even the pipeline burst.

How to connect high pressure hose?

It is recommended that the pump outlet adopt a flexible connection method of high-pressure hose.