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Starting Up Liquid Ring Vacuum Pump
To start, unbox all parts, materials and tools that came with the package and inspect each element for shipping damage. Report any damage to the shipping carrier or pump company immediately. Verify that the liquid ring vacuum pump nameplate for Voltage, Phase, and Horsepower ratings as well as Amperage rating on the motor. They must match your control panel and power supply to prevent future damage. Warranty does not cover damage caused by connecting pumps and controls to an incorrect power source (i.e. voltage and phase).
During installation, the vacuum pump must be placed on a level plane and fix with bolts through bolt holes into the chassis or frame. It is suggested that when transporting the pump, it must be lifted using the lifting eye bolt. The capacity of the hoisting equipment must always be considered. In order to prevent foreign matter from entering and potentially damaging the vacuum pump, all piping connections have been plugged prior to shipment. It is important to leave all temporary plugs in place until it is ready to install the pipe connections to avoid allowing dirt from falling into the pump housing. All pipe connections should be made in a manner to avoid imparting stress to the pump. Connecting pipes which have the potential to push, pull, rotate, or vibrate the pump can severely damage it during operation. It is always best to install, vibration and or dresser couplings to reduce potential damages.
Do not run the chemical pump dry or without verifying that it has a proper supply of seal chemical with a corresponding flow control valve. Running the pump with too little or too much chemical will result in excessive damage.
When running the pump with no cavitation protection, the suction pressure should do not be lower than 2.3 inch-Hg absolute when the water temperature is 60F and dry gas temperature is 70F. The higher the temperature is, the higher the lowest allowable suction pressure. Cavitation will cause excessive damage and load operation. To prevent cavitation install a vacuum breaker in the suction line to limit the ultimate vacuum level.
When staring up the pump, the following procedure must be considered. All pipe connections must be checked to ensure that the pump is plumed correctly. All manual shut off valves must be opened to ensure proper fluid chemical flow. Check that the seal fluid is on and ready to fill up the pump and has been primed. The by-pass valve must be opened or manually actuated for a minimum of 30 seconds to ensure that the vacuum pump case is flooded so that the pump is properly lubricated which will produce a vacuum when started. Manually rotate pump by hand using the motor fan to ensure that the pump rotates freely. If the pump has been in storage for a long time, it may be necessary to jog it free prior to initial startup.
Then kick start the pump using the manual start button to ensure that the pump is wired correctly and rotates according to the proper direction on the pump casing. Reverse the polarity of the wiring if necessary to ensure proper rotation. Start to vacuum pump and monitor the seal fluid rate.