Operation
CAUTION
Never allow the pump to run dry of the fluid being pumped. A dry pump will quickly accelerate to a high speed, possibly damaging itself, and it may get very hot.
7.Read and follow the instructions supplied with each component in your system.
8.If the pump will be unattended for any period of time, if there is an air supply interruption, or to shut off the system at the end of the work shift, always relieve the pressure.
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 7.
9.Check periodically to ensure that the pump’s mounting is secure.
Troubleshooting
WARNING
INJECTION HAZARD
To reduce the risk of serious bodily injury, including fluid injection or splashing in the eyes or on the skin, always follow the Pressure Relief Procedure on page 7 when you shut off the pump, check or service any part of the system, install or change dispensing devices, and when you stop dispensing.
NOTE: Check all other possible problems and solutions before you disassemble the pump.
Problem | Cause | Solution |
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Pump fails to operate, or there is | Inadequate air supply pressure or | Increase air supply; clear |
no fluid flow. | restricted air lines |
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| Closed or clogged dispensing | Open; clear |
| valve |
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| Clogged fluid lines, hoses, valves, | Clear* |
| etc. |
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| Damaged air motor | Service air motor |
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| Exhausted fluid supply | Refill and reprime or flush |
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Continuous air exhaust | Worn or damaged air motor gas- | Service air motor |
| ket, packing, seal, etc. |
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Erratic pump operation | Exhausted fluid supply | Refill and reprime or flush |
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| Held open or worn intake valve or | Clear; service |
| piston packings |
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Pump operates, but output low on | Held open or worn piston packings | Clear; service |
up stroke |
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Pump operates, but output low on | Held open or worn intake valve | Clear; service |
down stroke |
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Pump operates, but output low on | Inadequate air supply pressure or | Increase air supply; clear |
both strokes | restricted air lines |
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| Closed or clogged valves | Open; clear |
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Fluid is coming out of the muffler. | Worn or damaged throat seal | Service |
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*Follow the Pressure Relief Procedure on page 7, and disconnect the fluid line. If the pump starts when the air is turned on again, the line, hose, valve, etc., is clogged.
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