TROUBLESHOOTING GUIDE
WARNING
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including injury from moving parts or electric shock, always follow this procedure whenever you shut off the sys- tem, when checking or servicing any part of the sys- tem, and whenever you stop painting.
1.Turn the ON/OFF switch to OFF.
2.Unplug the power supply cord.
3.Trigger the roller valve to relieve pressure.
If you suspect that pressure is not fully relieved after following the steps above, open the priming valve 2 turns counterclockwise.
CAUTION
Thoroughly flush the system after each use to re- duce down time and costly repair bills.
NOTE: If you are not able to determine the cause of the problem, or the problem and solution is not dis- cussed in this chart, return the system to an au- thorized service agencyfor repair.
PROBLEM | CAUSE | SOLUTION | ||
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Pump will not prime or primes slowly | Clogged suction tube strainer | Clean. | ||
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| Paint too thick | Thin; try pouring paint into suction tube; | ||
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| use 3/8 in. ID hose if necessary. | ||
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| Outlet valve spring worn | Pour paint into suction tube and try to prime | ||
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| system. If it doesn't prime in one minute, re- | ||
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| place the outlet valve spring. See page 11. | ||
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| Inlet valve stuck or damaged. | Depress inlet valve gently and pour in | ||
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| about 1 teaspoon mineral spirits. Try to | ||
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| prime pump. Replace inlet valve if neces- | ||
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| sary. See page 10. | ||
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| DEPRESS LIGHTLY. |
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| POUR IN 1 TEASPOON |
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| MINERAL SPIRITS |
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| Loose inlet hose nut | Tighten. |
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Pump wil not start | Power cord unplugged | Plug in. |
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| ON/OFF switch turned off | Turn on. |
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| Damaged motor | Replace. See page 13. |
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| Fuse burned out. | Replace. See page 10. If it burns out again |
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| quickly, return the system for repair. |
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Low paint flow or no paint flow. | Clogged roller valve, diffuser, roller frame, | Clean thoroughly after each use. See page |
| roller valve or hose | 6. |
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| Using more than 7.6 m (25 ft) of | Use up to 30 m (100 ft) of 3/8 in. ID hose. |
| 1/4 in. ID hose | See CAUTION on page 17. |
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| Loose inlet hose nut | Tighten. |
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| Worn priming valve | Replace. See page 12. |
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| Priming valve is open | Close. |
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| Paint too thick | Thin. |
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| Damaged pressure switch | Replace. See page 11. |
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| Worn inlet and/or outlet valve | Replace. See page 11. |
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Pump runs after roller valve trigger is | Worn pressure switch | Replace. See page 11. |
released. |
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| Worn inlet valve | Replace. See page 11. |
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| Worn priming valve | Replace. See page 12. |
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| Worn roller valve packings or needle | Repair. See page 9. |
8307±760
