- Marginalized ground
Recheck electrical continuity for the conveyer
Equipment suppliers have a resistance ohms limit for the line. Confirm you are below that limit high resistance gives the gun a varying voltage from beginning to end of spray
Poor ground shows up often as a pattern of poorly coated area on parts. Without proper ground parts build up charge so the effective charge of the gun is reduced.
- Use clean hooks with sharp contact to the part
Scrape clean as needed
- No unused hooks through the spray booth
Coating unused hooks eliminates the ground by insulating the contact points