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Run: Powder Coat Pretreatment Wash Stage Verification

Use this powder coat pretreatment wash stage verification to confirm bath chemistry, temperatures, rinse quality, and surface cleanliness before parts enter ...

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Inspection Scope and Line Identification

Line, washer, and shift identified on inspection record

Pretreatment process matches approved SOP for the coated product critical (required)

Yes No N/A

Inspection performed by trained and authorized personnel critical (required)

Yes No N/A

Bath Concentration and Chemistry

Cleaner or alkaline wash bath concentration within specified range critical (required)

Pretreatment conversion coating bath concentration within specified range critical (required)

Bath pH within specified operating range critical (required)

Bath contamination, sludge, or oil buildup observed critical (required)

Yes No N/A

Temperature and Dwell Controls

Wash bath temperature within specified range critical (required)

Rinse bath temperature within specified range

Conveyor speed and dwell time match approved pretreatment settings critical (required)

Yes No N/A

Rinse Quality and Surface Cleanliness

Final rinse water appears clear and free of visible carryover critical (required)

Yes No N/A

Water break test or equivalent surface wetting check passes critical (required)

Yes No N/A

No visible residue, streaking, flash rust, or particulate remains on test panel or part sample critical (required)

Yes No N/A

Photo evidence (optional)

Equipment Condition and Controls

Spray nozzles, pumps, filters, and agitation are operating correctly critical (required)

Yes No N/A

Chemical feed, level control, and temperature instrumentation are functioning and readable critical (required)

Yes No N/A

Safety guards, spill containment, and eyewash access are unobstructed critical (required)

Yes No N/A

Corrective Actions and Sign-Off

Any out-of-spec bath, temperature, or rinse condition documented with corrective action

Inspector signature

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