Cleaning screw joints - DKP206AV - DKP206W - DKP210AV - DKP210W

If there is any rust or corrosion, clean it.

1. Remove loose dirt or rust with a wire brush or a scraper and a sandpaper.
2. Protect the screw joints with non-conductive, non-water-soluble, non-silicone-based grease or corrosion protective paint.