Keeping Membrane Shells Moist


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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.


Regular ED Tank Dump

Rinse off the side wall of the ED tank and the Membrane Shells with a DI water hose and stand back so there is about 3 m (10 ft) between you and the Membrane Shells. Do this as the liquid level of the ED tank is lowered. If the ED tank is to be empty for a 3 to 5 days, then do the following

  • Keep the electrolyte pump (I.e. anolyte for cathodic ED paint users) working 24 hours a day 7 days week. Do this in order to keep the inside surface of the membrane wetted.
  • Once a shift: make sure the electrolyte tank is full or add DI water as required; use the same DI water hose and spray off the Membrane Shells to keep the exterior from drying out too much.
  • Do not use high pressure sprayers to clean off the walls of the ED tank as they can damage the fragile membrane.

Extended Regular ED Tank Dump

Read and follow the instructions above. In addtion, you are encouraged to purchase Poly Sleeves that can be placed over the Cells much like a sock is placed over a foot. The Poly Sleeve is double sealed on one end and has a plastic tie that is used to secure the Sleeve just above the Collar of the Membrane Electrode (ME) Cell in place. See the table below; select the Sleeve by locating the Effective length of your ME Cell. By default, about 0.5 m (~24 in) will be included. The price for each Sleeve is typically less than US $5.00 and they can be reused except for the plastic tie wrap.

1-1/2” Size & 2” Size TECTRON ME Cell Effective Length UFS Ordering PN
Millimeters Inches
0910 36.1 Z140012
1400 55.1 Z140012
1900 74.8 Z140021
2300 90.5 Z140013
2900 114.2 Z140019

Example: If you use a TECTRON Cell with a 1900 mm Effective Length then order UFS PN Z140021. If you use a Cell with an effective length of 2750 mm then round up to 2900 mm and order UFS PN Z140019. Long Term Stoage of Membrane Shells Spray the outside of the ME Cells with a D.I. water hose to rinse off paint solids. Remove the ME Electrode (metal portion) and store in a clean environment. It is okay to let the ME Electrode dry out. Remove the ME Shell from the ED tank and immediately store in a long poly sleeve (measuring 200 mm (~8”) wide when flat and 0.15 mm (6 mil.) thick minimum) and completely seal (do not use staples – use vinyl tape or a poly bag sealer) both ends to preserve moisture. Select a Sleeve that is about 0.5 m (~24 inches) longer than the overall length of your TECTRON Cell. Use the table below to select the proper Sleeve.

Overall Length of 1-1/2” Size or 2” Size TECTRON ME Cell + 0.5 m (~24in) UFS Ordering PN
Millimeters Inches
2000 78.7 Z140012
2500 98.4 Z140021
3000 118.1 Z140013
3500 137.8 Z140019
4000 157.5 Z140015
4500 177.2 Z140020
5000 or Longer 196.9 or Longer Contact UFS

Example: If you use a TECTRON Cell with an Overall Length of 2350 (92.5 in) add 500 mm (24 in) to it, which would be 2850 mm (116.5 in) and then round up to the next available Sleeve length – or 3000 mm (UFS Ordering PN Z140013).

Do not let the ME Shell dry out. Store ME Shells in the vertical position in order to protect them from being crushed by a heavy object.






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