Periodically clean the injection fitting / check valve assembly,
especially when injecting fluids that calcify such as sodium hypochlorite.
These lime deposits and other build ups can clog the fitting,
which will increase the back pressure and interfere with the pump accuracy. Warning: Severe cases can physically damage the injection fitting and the increase back pressure can cause increased wear on the pump components; gears, bearings and pump tubes.
Please follow these steps when cleaning your injection fitting / check valves.
Wash the pump, tubing and fittings out with clean water. To do this, place the
"suction tubing" and "discharge tubing" (injection fitting too) in a container full
of clean water.
Let the pump run in the clean water for a couple of minutes to remove all
traces of chemical.
Remove the lime deposits with undiluted vinegar. To do this, place the
"suction tubing" and "discharge tubing" in a container full of undiluted vinegar. See
image to the right.
Let the pump run in the undiluted vinegar for 5 to 10 minutes (longer if
Flush out your pump, tubing and fittings to
remove any excess vinegar. To do this, repeat steps 1 and 2.
If you have a diaphragm pump head that needs cleaning, follow the same steps above. Refer to the exploded view in your instruction manual when assembling the pump head.
Tip: Follow the same steps above to clean a foot valve.
Standard Injection Fittings are made of Polypropylene. PVDF Injection Fittings are recommended for use with aggressive chemicals which are not compatible with Polypropylene. PVDF Injection Fittings should be considered for use with chlorine at elevated temperatures.
Blue-White recommends that you purchase a spare Injection Fitting for your pump. This is commonly the most neglected part of most pump installations. You can purchase a spare Injection Fitting for around $30 (US).
All diagrams are strictly for guideline purposes only. Always consult an expert before installing the Chem-Feed/FlexFlo pump on specialized systems. The Chem-Feed/FlexFlo should be serviced by qualified persons only.
Always wear protective clothing, face shield, safety glasses and gloves when working on or near your metering pump. Additional precautions should be taken depending on the solution being pumped. Refer to MSDS precautions from your solution supplier.
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