Anolyte Circulation Pump Failure


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Think and act in a safe manner. Always disconnect power and use a lockout before you work on the E-coat system, or any of the related subsystems. Observe any confined space conditions. Use the appropriate safety equipment and clothing for the task. Please carefully read all the instructions listed below to familiarize yourself with the project before attempting to perform any of the work.

Required Materials

  • DI water line
  • Piping adapter(s)

    Required Tools

  • Adjustable wrench (10”)
  • Pipe wrench
  • Strap wrench


    Whenever the anolyte circulation pump fails, circulation is lost inside the Cell. The loss of circulation means that oxygen is not removed from the face of the anode and heat is allowed to increase. If this condition persists, then paint solids can build up on the outside of the membrane (from heating up paint solids) and increase the erosion rate of the 316L Anodes. If this happens, install a temporary DI water line to the anolyte pump discharge line to circulate the fluid until the pump is repaired. Run the DI water for 10 minutes every hour (or 5 minutes every half-hour).

    1. Install a temporary DI water line to the tank discharge. (Confirm installation location is down stream of the check-valve.)
    2. Attach a threaded connection to the DI water line, since the line will have a high pressure.
    3. Run the DI water for 10 minutes every hour. (Can also be run for 5 minutes every half-hour.)
    4. Do not allow the temperature of the anolyte to exceed the ED bath temperature by 3 C 3 - 5° C.
    BULLETIN 990169





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