
| Teledyne API Ultrafine Particle Monitor - Model 651 |
| Maintenance, Service, and Troubleshooting |
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| Problem | Cause | Suggestions |
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| Home screen displays Inlet | There is an obstruction in the | 1. | Check that there are no kinks in the tubing |
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| Pressure Fault. Status | aerosol or Model 651 inlet. |
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| upstream of the inlet. |
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| screen displays a low inlet |
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| 2. | Check the inlet screen assembly for obstructions. |
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| pressure reading (in red). |
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| 3. | Remove the inlet screen assembly. |
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| 4. | Remove the elbow joint. |
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5. Unscrew the black cap.
6. Remove the screen assembly. Note: Do not lose the
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| 7. Blow the screen with compressed air. | ||
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| 8. Reassemble the inlet screen assembly. | ||
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| 9. Replace the inlet screen assembly. | ||
“Temperatures out of | The instrument was flooded. | In the event of flooding: | ||
range” error messages are | Environmental temperature or | 1. | Disconnect the water bottle from the WATER | |
displayed for the Water | humidity is too high or too low. | |||
| INLET/DRAIN. | |||
Separator, Optics, Growth | Note: If the instrument was |
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2. | Run the instrument for 6 to 8 hours to dry it out. | |||
Tube or Conditioner. | ||||
flooded, you will also see water | ||||
Status screen shows | 3. | When the flow returns to normal, the instrument | ||
in the tubing and high nozzle | ||||
readings in red. |
| is dry. | ||
pressure readings. |
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| 4. Reconnect the water bottle. | |||
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| If concentrations do not return to normal, return the | ||
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| instrument to TAPI for repair. | ||
Status screen indicates | There is no water in the | Check that the water bottle is filled and connected | ||
Water Reservoir Not Filled. | reservoir. The water may not be | correctly. Make sure that the bottle is placed at a higher | ||
| connected, the water bottle may | level than the instrument to provide for the gravity flow | ||
| be empty, or the water bottle has | fill mechanism. | ||
| been placed below the level of |
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| the instrument. | If the problem persists, return the instrument to TAPI for | ||
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| repair. | ||
Status screen Pulse Height | There is no or very low | If the suspected concentration is above 100 #/cm3 then | ||
indicator is too low (in the | (<10 #/cm3) particle | replace the wick and make sure water is connected to | ||
red area). | concentration. At higher | the instrument. If all other status indicators are normal, | ||
| concentrations this indicates: a | the optics module must be replaced. Return the | ||
| dry wick, optical alignment | instrument to TAPI for replacement of the optics module | ||
| problems, dirty optics, or flooded | by a qualified service technician. | ||
| optics. |
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The | The clock battery needs | Replace the clock battery located on the main | ||
not maintain time when the | replacing. | electronics board with a BR1225 Panasonic or | ||
instrument is turned off. |
| equivalent. | ||
The time is not maintained |
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correctly. |
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07506C DCN6727 | 89 |