The Typical Installation of a Dosing Pump

Dosing pumps or metering pumps are pumps that pump liquids at a predetermined rate over a set period of time. There is no such specific pump design that can be called a dosing/metering pump, since the term refers more to how a pump is used than how it is specifically designed. That being the case, there are preferred pump designs which make for better dosing or metering than others, depending upon the dosing or metering need. Most of these pumps are made up of an electric motor that drives a pump head, and installing them is a fairly straightforward process.
Select the mounting location and position. Depending upon your dosing metering pump application, location and position are relatively flexible. If you do choose to mount it vertically, make sure the motor is positioned above the seals. Doing so prevents seal leakage into the motor. Seal leakage will damage the motor and/or potentially render it inoperable.
Dosing pumps play a key role in many industrial applications.
Add the fluid, per your application, to be pumped into the vacuum/suction and exit/discharge ports. This is called pre-wetting, and it "wets" the pump elements and mechanical seal. Pre-wet the pump before connecting it.
Install pump piping by following the drawings and hookup requirements that came with your particular positive displacement pump. Be careful to match the pipe size to the suction and discharge port diameters. Make sure the pipe is stiff and/or self-supporting so as to limit direct, excessive strain in any direction on the pump housings. Use Teflon tape or pipe lubricant/dope to assure a good seal and help make removing the lines easier, should the need arise.
Correct pump voltage is critical for proper pump function.
Refer to the wiring diagram in the terminal box or on the motor's nameplate to wire the pump in correctly. Be sure to observe all local and additional codes when doing so. Keep all voltage variances within 10 percent of the stated voltage on the nameplate. Verify that all power connections have the correct voltage within the stated range. Keep in mind that these pumps are equipped with overload protection.
Double-check the suction lines to be sure they are air tight on all self-priming pumps. When they are packed or pre-wetted, these pumps are capable of anywhere from 15 to 25 feet of suction lift. The two main variables being the thickness of the fluid pumped and that the suction lines are air tight.
Line capacity dictates pump lubrication potential.
Keep the sustained flow rate at no lower than 10 to 15 percent of full line capacity when these pumps are running, since they rely on the fluid they pump to keep them lubricated. Operate these pumps only within the temperature range for which they are suited. Thoroughly drain these pumps when they are not going to be used for extended periods.