INSTRUCTIONS Product: All Document #: 90213
Process: Plexus PC- 120 Application Instructions Rev.: 1
Process Description: Instructions for use of surface conditioner Page 1 of 4
What is Plexus PC-120?
• Plexus PC-120 is a dual function primer/conditioner designed to clean surface contamination
and leave a thin coating of primer on specific metal surfaces.
• Although designed specifically for cleaning and priming of Aluminum and Stainless Steel, PC-120
can be used to clean other surfaces in special situations. Contact Plexus Technical Service for
recommendations on any surface other than Aluminum or Stainless Steel.
Plexus PC-120 works by:
• Cleaning the surface of contamination using Isopropyl Alcohol to “lift” machine oils and other
contamination.
• Depositing a thin Phosphate based coating to retard corrosion.
• Leaving a light “pink” color to assist in determining what areas have, and have not, been
treated with PC-120.
How should PC-120 be used?
• PC-120 can be brushed, wiped or sprayed onto the surface being primed.
• The PC-120 applied should then be wiped with a clean dry rag to remove any surface
contamination cleaned by the PC-120 and leave only a thin, quick drying film.
• Dirty or oily rags should be replaced to avoid improper cleaning.
• Quality dye-free paper towels that don’t leave fibers behind are recommended.
Common mistakes with PC-120
1) Using too much PC-120
2) Not removing the oils lifted off the metal surface before the PC-120 dries.
3) Not abrading corrosion that is already on the surface of the metal.
4) Using PC-120 past its shelf life.
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