| Problem |
Cause |
Remedy |
Results |
| Dry-spray |
1.
Inadequate parts grounding |
1.
Clean all contact points - zero resistance is ideal. |
1.
Reduces dry-spray |
| |
2.
Improper KV |
2.
Increase/decrease the high voltage within the range
of 30-100 KV. |
2.
Reduces dry-spray |
| |
3.
Excessive powder velocity at the part |
3.
Reduce Atomizing / Dosing / Dilution air pressure -
a softer pattern is better. |
3.
Facilitates better charging of powder and provides
more uniform deposition |
| |
4.
Excessive powder delivery volume |
4.
Reduce the powder delivery air pressure - do not
spray more powder than can be charged. |
4.
Facilitates better charging of powder |
| Off-Color |
1.
Improper KV |
1.
INCREASE the high voltage within the ranges of
30-100 KV. |
1.
Will DARKEN most metallics |
| |
2.
Improper KV |
2.
DECREASE the high voltage within the ranges of
30-100 KV. |
2.
Will LIGHTEN most metallics |
| |
3.
Excessive powder delivery volume |
3.
Reduce the powder delivery air pressure - do not
spray more powder than can be charged. |
3.
Color will be more uniform and will usually become
lighter |
| |
4.
Distance between gun and part |
4.
INCREASE distance. |
4.
Will LIGHTEN most metallics |
| |
5.
Distance between gun and part |
5.
DECREASE distance. |
5.
Will DARKEN most metallics |
| Splitting |
1.
Particles collecting on the electrode |
1.
Utilize the electrode "Rinsing-Air" or
"Air-Wash" feature if available. |
1.
Eliminates particle spitting |
| |
2.
Particles collecting on the deflector |
2.
Periodically clean the deflector surface with air. |
2.
Eliminates build-up and spitting |
| |
3.
Surging powder delivery |
3.
Increase Atomizing / Dosing / Dilution air pressure. |
3.
Better powder deposition and more uniform color |
| |
4.
Improper KV |
4.
Adjust the high voltage within the range of 30-10KV. |
4.
More uniform charging of powder |
