Basic Troubleshooting
Problem | Cause | Solution |
|
|
|
|
|
|
Pump cycles but does not build up | Prime/Spray valve in PRIME position | Turn Prime/Spray valve to SPRAY |
pressure. | (pointing down). | position (pointing forward). |
|
|
|
| Pump is not primed. | Prime pump, see Operation manual |
|
| 312001. |
|
|
|
| Inlet screen is clogged or suction | Clean debris off inlet screen and |
| tube is not immersed. | make sure suction tube is immersed |
|
| in fluid. |
|
|
|
| Suction tube is leaking. | Check suction tube for cracks and |
|
| cuts. Make sure suction tube clamp is |
|
| on hose. Replace suction tube if |
|
| cracked or damaged. |
|
|
|
| Prime/Spray Valve is worn or | Take sprayer to Graco/MAGNUM |
| obstructed with debris. | authorized service center. |
|
|
|
| Pump check ball is stuck. | Read Pump does not prime section |
|
| in Troubleshooting, page 12. |
|
|
|
Pump cycles, but paint only dribbles | Pressure is set too low. | Slowly turn pressure control knob |
or spurts when spray gun is trig- |
| clockwise to increase pressure set- |
gered. |
| ting which will turn motor on to build |
|
| pressure. |
|
|
|
| Spray tip is clogged. | Unclog spray tip, see Operation man- |
|
| ual 312001. |
|
|
|
| InstaClean fluid filter is clogged. | Clean or replace InstaClean fluid fil- |
| (ProX7 and ProX9 Only) | ter, see Operation manual 312001. |
|
|
|
| Spray gun fluid filter is clogged. | Clean or replace gun fluid filter, see |
|
| Operation manual 312001. |
|
|
|
| Spray tip is too large or worn. | Replace tip. |
|
|
|
312667B | 13 |
