ELECTRICAL TROUBLESHOOTING CHART 
PROBLEM | CAUSE | SOLUTION |
|
|
|
|
|
Poor wrap±around. | *Turbine alternator not operating. | Check air supply to turbine. Check for |
|
|
| dirt or moisture in turbine. See page 23. |
|
| Improper distance between gun | Adjust spraying distance to |
|
| and workpiece. | 203±305 mm (8±12 in.). |
|
| Parts poorly grounded. | Clean hangers, check for proper |
|
|
| ground on conveyer or track. |
|
| High booth exhaust velocity. | Reduce within code limits. |
|
| Atomizing air pressure too high. | Reduce air pressure. |
|
| Fluid pressure too high. | Reduce fluid pressure. |
|
| Fluid viscosity. | Check supplier for proper fluid for |
|
|
| electrostatic spray. |
|
| Fluid resistivity too low. | Check fluid resistivity with paint |
|
|
| meter and probe. |
|
| Faulty gun resistance. | Check gun resistance. See page 16. |
|
| Faulty resistor stud resistance. | Check resistor stud resistance. |
|
|
| See page 17. |
|
| Faulty power supply resistance. | Check power supply resistance. |
|
|
| See page16. |
|
| Faulty electrode. | Replace electrode. See page 18. |
|
| *Faulty turbine alternator. | Be sure plug is in place on back of |
|
|
| turbine alternator housing.Remove and |
|
|
| test turbine alternator. See page 23. |
|
Operator gets mild | Operator not properly grounded or is in | Be sure floor is properly grounded. |
|
shock. | contact with ungrounded object. | Wear shoes with conductive soles |
|
|
| or wear personal grounding straps. |
|
|
| Be sure operator is not in contact |
|
|
| with or carrying any metallic items |
|
|
| which could build up electrical charge. |
|
| Gun not properly grounded. | See Check the Electrical Grounding, |
|
|
| page 8. Be sure Graco electrically con- |
|
|
| ductive air supply hose is being used |
|
|
| and is properly grounded. |
|
|
|
|
|
Operator gets mild | Work piece not properly | Clean work piece hangers. Check for |
|
shock when touching | grounded. | proper ground on conveyor or track. |
|
work piece. |
|
|
|
|
|
|
|
*ES indicator light not on when gun is triggered.
77 5