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| Pressure Control |
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| Digital Display Messages |
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| • | Digital messages are not available on all sprayers | |||
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| WARNING |
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| • | Blinking LED total count equals digital error code | ||||||||
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| i.e., two blinks is the same as E=02 | |||
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| Relieve pressure before repair, page 5. |
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| DISPLAY* |
| SPRAYER OPERATION |
| INDICATION |
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| ACTION | ||||
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| No Display |
| Sprayer may be pressurized | Loss of power or display not |
| Check power source. Relieve pressure | ||||||
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| connected |
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| before repair or disassembly. Verify display | ||
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| is connected. | |
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| Sprayer may be pressurized | Pressure less than |
| Increase pressure as needed | ||||
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| 200 psi (14 bar, 1.4 MPa) |
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| ti6314a |
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| psi |
| Sprayer is pressurized. Power is applied. | Normal operation |
| Spray | |||||
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| (Pressure varies with tip size and |
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| bar |
| pressure control setting.) |
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| MPa |
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| ti6315a |
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| Sprayer stops. Engine is running. | Exceeded pressure limit |
| 1. | Check fluid path for clogs, such as | |||
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| clogged filter. |
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| 2. | Open prime valve and gun if running |
| ti6316a |
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| AutoClean. | ||
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| 3. | Use Graco paint hose, 1/4 in. x 50 ft |
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| minimum. Smaller hose or metal braid |
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| hose may result in pressure spikes. |
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| 4. | Replace transducer if fluid path is not |
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| clogged and proper hose is used. |
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| Sprayer stops. Engine is running. | Pressure transducer faulty, bad |
| 1. | Check transducer connection. | |||
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| connection or broken wire |
| 2. | Disconnect and reconnect transducer | ||
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| plug to ensure good connection with |
| ti6317a |
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| control board socket. | ||
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| 3. | Open prime valve. Replace sprayer |
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| transducer with known good |
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| transducer and run sprayer. Replace |
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| transducer if sprayer runs or control |
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| board if sprayer does not run. |
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| Sprayer stops. Engine is running. | High clutch current |
| 1. | Check wiring connections. | |||
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| 2. | Measure: 1.2 +0.2Ω (GMAX II 3900); |
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| 1.7 +0.2Ω (GMAX II 5900/ 7900) |
| ti6318a |
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| across clutch field at 70°F. | ||
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| 3. | Replace clutch field assembly. |
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| Sprayer stops. Engine is running. | Loss of paint to pump or severe |
| 1. | Check for empty paint condition, clogged | |||
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| pressure loss |
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| inlet strainer, failed pump or severe leak. | |
| (with constant |
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| 2. | Reduce pressure and turn pump | ||
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| switch OFF and ON to restart pump. | |||
| green LED) |
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| 3. | Watch dog function can be deactivated | ||
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| by turning WatchDog switch OFF. |
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| Sprayer stops. Engine is running. | Pressure greater than |
| 1. | Open prime valve and gun. | |||
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| 2000 psi (138 bar, 14 MPa) while |
| 2. | Verify no flow obstructions or clogged | ||
| ti6320a |
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| in Flush Timer Mode |
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| filter. | ||||
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*Error codes also appear on control board as a blinking red LED. LED is an alternate to digital messages.
1.Remove two screws (71) and swing down cover (130).
2.Start engine. Blink count is the same as error code(E=0X).
After a fault, follow these steps to restart sprayer:
1.Correct fault condition
2.Turn sprayer OFF
3.Turn sprayer ON
14 | 311046H |