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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.
- Acetone Solution (10% acetone/90% D.I. Water - for cleaning oil from the surface)
- Nitric Acid Solution ( 5% nitric acid /90% D.I. Water—for cleaning paint solids from the surface)
- Soft Bristle Brushes—with a 2” diameter bristles and a handle long enough to reach inside of the anode
- Clean Rags
- Cotton Gloves
BEFORE YOU START
Please keep in mind that PMx precious metal oxide coatings are fragile and susceptible to scratching. Even small scratches and nicks in a PMx anode can cause extremely rapid erosion. Make sure to wear cotton gloves at all times while handling the anode. Remove all jewelry that may come in contact with the anode, especially rings and watches. Set up an area in which to work. The area should be free of dirt and objects that can scratch the precious metal coating on the anodes. Sawhorses covered with padding and clean, lint-free cloths are an ideal work surface. Turn off the power to the anode cells and lockout the DC rectifier with your own lock. Remove cells from the membrane shells.
- Clean oil from the surface by saturating a clean cloth with the acetone solution and gently wiping surface. Be sure to reach all parts. Wrap the bristles of the long-handled brush with a cloth to clean inside. (This step is important: any remaining oil will become fluid-borne once the Cell is re-filled with anolyte, thus re-contaminating.) Change rags frequently.
- Rinse inside and out with D.I. Water.
- Clean the paint solids from the surface by gently scrubbing the inside and outside surface with a soft brush that has been immersed in the nitric acid solution. The PMx coating is porous; therefore it is important to thoroughly (but gently) scrub it to ensure that all paint solids have been removed. Do not scrub too hard as this may inadvertently remove the PMx coating, which may cause the titanium to dissociate.
- Rinse nside and out with D.I. Water.
- Re-install in the TECTRONTM Cells. Ready the E-coat system for operation.
- Once the system is turned back on, monitor the amperage and voltage readings. If the system still operates at unusually high readings, please call UFSc for additional information.