Prior to Operation – System Review
After the CFWS Skid has been installed, all components should be checked again for proper alignment and secure connections. Ensure all unions are tight and hardware are supports are secure.
Check electrical connections are wiring. Prior to fluid testing, we recommend powering on pump(s), testing controls, and familiarizing yourself with pump programming. Temporarily disconnect suction and discharge tubing from the pump. Run the pump dry in manual mode. Test all communication wiring and program pump inputs and outputs. If using a peristaltic pump, test pump leak detection.
Review material compatibility of all skid components with the chemical being used. If there is any doubt about chemical compatibility, please contact the factory prior to use. It is the customer’s responsibility to ensure all skid components are compatible with the chemicals being used.
Skid Testing
All Blue-White skids are leak tested at the factory prior to shipment. However, we do recommend testing the skid for leaks prior to use, as connections and fittings can loosen during shipment.
After all of the skid connections and wiring have been checked, a water test is recommended to check for any leaks. This is a good time to review valve positioning.
Put the pump(s)in “Off” or “Manual” mode and ensure it is not running. Test the skid with water by using one of the skid inlets connected to a low-pressure water source or tank.
- Open inlet valve V1
- Open the suction valve to the pumps
- Open discharge valve V8 (Single pump skid. For dual pumps, refer to Dual pump skid component drawing.)
- Turn the pump on.
Run the pump in manual mode slowly. Slowly increase the speed as needed to draw water into the skid system. Once water begins to exit the skid’s discharge, turn the pump off. Check the piping for leaks. Open the valve to the calibration column and fill the calibration column. Stop the pump and check for leaks.
Pressure Testing
All Blue-White skids are pressure tested at the factory to 150 PSI. We recommend performing a pressure test on site and testing the provided Pressure Relief Valve (PRV).
Once the skid has been filled and leak-tested with water, the system can be pressure-tested, and the Pressure Relief Valve (PRV) can be set and tested. The CFWS Skid System is rated for 150 PSI; however, depending on the pump model provided and other factors, the system may need to run at a typically lower pressure.
A pressure relief valve (PRV) is provided with the skid to ensure the skid or system does not see high pressures. The pressure relief valve is set at the factory for 50 PSI. The pressure setting on the PRV can be changed by turning the knob on the PRV.
To test the PRV, open suction and discharge valves and run the pump at a slow speed, about 1-5% speed. Be sure the valve to the pressure gauge is open. Slowly close the discharge valve on the skid until the pressure gauge begins to move. Open the valve very slowly and watch the pressure gauge. The pressure should stop increasing once it reaches the set point of the PRV. The PRV will open and recirculate water back into the suction side of the pump.
To adjust the PRV setting, leave the pump running and turn the PRV clockwise to adjust the pressure setting. Turning clockwise will tighten the valve and increase the system pressure. Turn the PRV counterclockwise to set a lower pressure. Be careful not to exceed the pressure rating of the pump or tubing. Pay special attention to the pressure rating of tube assemblies on peristaltic pumps. We recommend setting the PRV to 10 psi over the desired maximum running pressure system pressure.
If a Pressure Switch has been installed as part of the skid, or elsewhere on the discharge piping, now would be a good time to test. Adjust the pressure switch as necessary to provide a signal at a pressure just below the PRV Pressure setting.
Check for leaks after running the skid system at pressure.
Open the discharge valve completely and run the system with zero pressure for about 10-30 minutes. Check for leaks.
If leaks occur at welded pipe connections or accessory components, contact the factory. If leaks occur at valves or unions, stop the pump/system and relieve pressure. Then, check valve O-rings to ensure they are seated properly.
Drain the system if desired or required.
