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| Digital Display Messages | |
Digital Display Messages |
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| • Digital messages are not available on all sprayers | ||
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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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DISPLAY* |
| SPRAYER OPERA- | INDICATION | ACTION | |||||||
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No Display | Sprayer may be | Loss of power or display | Check power source. Relieve pressure before repair |
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| pressurized. | not connected. | or disassembly. Verify display is connected. | |||||||
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| Sprayer may be | Pressure less than | Increase pressure as needed. |
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| pressurized. | 200 psi (14 bar, 1.4 MPa). |
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| Sprayer is pressurized. | Normal operation. | Spray |
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| Power is applied. |
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| tip size and pressure |
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| control setting). |
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| Sprayer stops. Engine | Exceeded pressure limit. | 1. Check fluid path for clogs, such as clogged filter. |
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| is running. |
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| 2. Open prime valve and gun if running AutoClean. | |||||
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| 3. | Use Graco paint hose, 1/4 in. x 50 ft minimum. |
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| Smaller hose or metal braid hose may result in |
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| pressure spikes. |
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| 4. | Replace transducer if fluid path is not clogged |
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| and proper hose is used. |
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Sprayer stops. Engine | Pressure transducer faulty, | 1. | Check transducer connection. |
is running. | bad connection or broken | 2. | Disconnect and reconnect transducer plug to |
| wire. |
| ensure good connection with control board |
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| socket. |
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| 3. | Open prime valve. Replace sprayer transducer |
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| with known good transducer and run sprayer. |
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| Replace transducer if sprayer runs or control |
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| board if sprayer does not run. |
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Sprayer stops. Engine | High clutch current. | 1. | Check wiring connections. |
is running. |
| 2. | Measure: 1.2 + 0.2 Ω (GMAX II 3900); |
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| 1.7 + 0.2 Ω (GMAX II 5900/ 7900 & TexSpray |
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| 7900HD) across clutch field at 70°F. |
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| 3. | Replace clutch field assembly. |
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Sprayer stops. Engine | Loss of paint to pump or | 1. | Check for empty paint condition, clogged inlet |
is running. | severe pressure loss. |
| strainer, failed pump or severe leak. |
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| 2. | Reduce pressure and turn pump switch OFF |
(with constant |
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| and ON to restart pump. |
green LED) |
| 3. | WatchDog function can be deactivated by |
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| turning WatchDog switch OFF. |
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Sprayer stops. Engine | Pressure greater than | 1. | Open prime valve and gun. |
is running. | 2000 psi (138 bar, 14 MPa) | 2. | Verify no flow obstructions or clogged filter. |
| while in Flush Timer Mode. |
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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
332919C | 31 |
