Ⅰ. Matters needing attention when installing the metering pump:

1. The dosing metering pump and the motor have an integral structure, and there is no need to align them during installation. So, it is very convenient for installation.

2. Before installing the pump, please carefully check whether there are hard objects (such as stones, iron particles, etc.) in the pump flow path that will affect the operation of the pump, so as not to damage the impeller and pump body during the operation of the pump.

3. The anchor bolts must be tightened during installation to avoid the impact of vibration on the pump performance when starting.

4. The weight of the pipeline should not be added to the pump when the dosing metering pump is installed. Separate support bodies shall be provided to prevent deformation from affecting operation performance and service life.

5. For convenient maintenance and safe use, it is necessary to install a regulating valve on each of the inlet and outlet pipelines of the pump and a pressure gauge near the pump outlet. This is to ensure the operation within the rated head and flow range. Also, this is to ensure the normal operation of the pump and increase its service life.

6. The dosing metering pump is used for suction, so it should be equipped with a bottom valve. And the inlet pipeline should not have too many bends, and at the same time, there should be no leakage of water or air.

7. If the discharge pipeline is a reverse stop, the valve should be installed outside the gate valve.

8. After installation, please turn the pump shaft. The impeller should have friction or jamming, otherwise, the pump should be disassembled and check the cause.

9. The installation method of dosing metering pumps is divided into rigid connection and flexible connection installation.

Ⅱ. Operating procedures of the metering pump:

1. All air switches of the metering dosing pump are opened on the PLC cabinet to check whether the instrument is displayed on site and whether the liquid level display is normal. Then the pool will open quantitatively between the outlet valves.

2. The dosing metering pump, water solenoid valve, dissolving tank mixer, original tank and tank connection valve switch should be switched to the "remote" position. The stroke speed of the metering pump is adjusted on site.

3.The liquid enters the 1# to 3# dissolution tank.

4. Then go back to the console, click to enter the metering system screen, and manually adjust the output frequency of the metering pump.

5. Click the water solenoid valve icon on the screen, turn on the solenoid valve to start pour water into the tank to dilute the liquid storage, and observe the screen level gauge. When the liquid level meter reaches a fixed height, click the blender icon to open the mixer.

6. Observe the level gauge, when it reached the required dilution of the liquid, close the inlet solenoid valve and turn off the mixer. Click the outlet valve icon of the dissolution tank to open the outlet valve, and the click the metering pump icon to turn on the metering pump. Observe the liquid level gauge and flow meter, when the liquid level is too low, please close the metering pump and the liquid valve.

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