Operating Manual for Metering Pump

 Don't transport flammable liquid.

 When you operate chemical metering pump or work near it, you must wear protective clothing, including gloves and safety goggles.

 Check the pipeline regularly to find out whether there is any fracture or aging. Replace the pipeline when it is necessary. (You must wear protective clothing and goggles when you check the pipeline.)

 Follow the instruction and warning information provided by the manufacturer of chemicals. The users are responsible for confirm the compatibility of the chemicals and the metering pump.

 Confirm whether the voltage on the nameplate of the metering pump is the same with the voltage of the device. If the pump can't be started, check the voltage of the pipeline.

 In treatment of drinking water, consult the local health officials and water treatment experts.

 You must reduce the pressure of the system before installing or disconnecting the pump pipeline.

 If the injection point is lower than the storage tank of chemicals and the pump, syphonage-proof valve should be installed.

 Don't modify the pump, because it will cause potential danger and make quality guarantee lose efficacy.

 Before leaving the factory, water transport test should be made for all pumps. If the transported chemicals react with water (for example, sulfuric acid), it needs to dismount the pipeline and dry it thoroughly.

 Before installation, consult the plumbers and electricians with certificates. Installation should conform to the local regulations.

 The metering pump must be calibrated in the working conditions to be used, in order to acquire accurate volume output.

Electromagnetic diaphragm metering pump is the equipment used for transporting chemicals or liquid. When power of it is on, the electromagnetic coil generates magnetic field which makes the movement diaphragm of push rod deform. With the effect of check valve, the liquid is transported to the outlet under the pressure effect.

When power of electromagnetic coil is off, the diaphragm is reset under the effect of the spring. The liquid will be sucked into the pump head. And one time of liquid transport is completed.