Paint Process Specification
Metal Enclosure Preparation & Painting
General:
Enclosures and fittings shall be prepared for finishing, utilizing a five stage dip process and the coating shall be electrostatically applied powder in accordance with the following specifications.
Factory Painted Finish:
The paint coating shall be dry powder, electrostatically applied to produce a finish of 3 to 5 mils thickness. The coated metal shall then be baked. The coating shall be commercially smooth, substantially free of flow lines, paint washout, streaks, blisters and other defects that would impair serviceability or detract from general appearance.
Tests and Certification:
The finish shall be in accordance with following:
Salt Spray Resistance
The undercutting of the film of the coating shall not exceed 1/8" average, from lines scored diagonally and deep enough to expose the base metal, after 2500 hours exposure in a salt spray cabinet in accordance with ASTM Designation: B 117.
Adherence
There shall be no coating loss when tested by California Test 645. Compliance of the coating system to the above requirements may be determined by the application of the coating, to 4" X 8" X 0.024" test specimens of the same material as the cabinets, in the same manner as applied to the cabinet. Testing shall include tape pull and mandrel bend testing in compliance with California Test Method 645.
A Fade and Chalk Test
Shall result in a maximum of 10% deviation from an original finish measurement when checked by weatherometer and fadeometer.
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22 BBS
