How to Winterize your Injection Pump

WARNING: Always use caution when performing maintenance or servicing an injection pump or system which has been previously pressurized. Wear appropriate protective equipment to prevent contact with hazardous chemicals and rinse the chemical system as instructed by the chemical manufacturer prior to performing maintenance.

1. Empty product from the chemical supply tank and flush the injection pump with water.
2. Remove hardened chemical residues or build up by flushing the injection system with:
   • kerosene or fuel oil if the last product through the pump was petroleum based.
   • soap and water if the last product through the pump was water based.
3. Remove the intake and discharge valve assemblies from the pump.
   CAUTION: Chemical residue or build up may be present on internal pump components. Wear gloves when servicing internal pump assemblies.
4. Remove the pressure transducer and clean the cavity and transducer body of excess build up.
5. Clean and inspect each assembly as instructed in the Check Valve O-Rings section on page 56 of the installation manual.
   NOTE: Be sure to reinstall the intake and discharge valves into the correct ports on the injection pump.
6. Perform the procedure described in the Pump Cam and Bearing section on page 58 of the installation manual to service the cam and bearing.
7. Recirculate a 50% water and automotive antifreeze mixture through the injection pump to check pump operation after reassembly as well as prevent freezing of pump components.