MPFHVLP SPRAY GUN
Troubleshooting
WARNING
Follow Pressure Relief Procedure, page 3, before troubleshooting or servicing. Read warnings, page 2.
Problem | Cause | Solution |
| Normal pattern | No action necessary |
Right |
|
|
| Dirty or damaged air cap or fluid nozzle. | Rotate air cap 180°. |
|
| If pattern follows air cap, problem is in air cap. Clean and |
|
| inspect. If pattern is not corrected, replace air cap. |
|
| If pattern does not follow the air cap, the problem is with the |
Wrong |
| fluid nozzle. Clean and inspect the nozzle. If the pattern is |
| not corrected, replace nozzle. | |
Heavy top or |
| |
|
| |
bottom pattern |
|
|
| Pressure too high for viscosity of material | a. Reduce air pressure. |
| being sprayed. | b. Increase material viscosity |
|
| |
|
| c. Correct pattern by narrowing fan size with spray width |
|
| adjustment knob. |
Wrong |
|
|
Split pattern |
|
|
| Dirty or distorted air horn holes. | Rotate air cap 180°. |
|
| If pattern follows air cap, problem is in air cap. Clean and |
|
| inspect. If pattern is not corrected, replace air cap. |
Wrong |
|
|
Will not spray. | Fluid supply empty. | Fill fluid supply. |
| a. Fluid pressure too high for viscosity of | a. Reduce fluid pressure. |
| material being sprayed. |
|
| b. Air pressure too low. | b. Increase air pressure. |
| c. Gun held too close to surface. | c. Hold gun about |
Wrong |
|
|
Heavy pattern or |
|
|
orange peel |
|
|
5 | 309990C |
