Troubleshooting and Maintenance
The analyzer has been designed to provide efficient and continuous service; however, certain maintenance procedures should be followed to obtain the best results over the longest period of time. When unexpected results occur, some common operational problems not indicated on the window and their respective causes and solutions are provided:
Log in to your customer portal to access error messages. Parts and accessories can be found online at www.Micromeritics.com.
Most operational problems are caused by the following:
- Leaks (commonly around the sample tube O-ring at the analysis port)
- Sample weighing errors
- Use of too much analysis bath fluid in the dewar at the start of an analysis
- Entry of incorrect system volume for analysis

Cause: | Dewar elevator stuck. |
Action: | Check for possible obstruction to elevator movement. |

Cause: | The elevator screw may need greasing. |
Action: | Contact your Micromeritics Service Representative. |

Cause: | Cable from computer to the analyzer is loose. |
Action: | Ensure the cable is seated properly. |

Cause A: | Sample tube connector nut is loose. |
Action A: | Turn the sample tube connector nut clockwise to tighten. |
Cause B: | Sample tube fitting is loose. |
Action B: | Tighten the fitting securely with a wrench. |
Cause C: | Sample tube O-ring is worn or cracked. |
Action C: | Replace the sample tube O-ring. See Replace the Sample Tube O-ring. |
Cause D: | Sample tube is cracked. |
Action D: | Replace with a new sample tube. |
Cause E: | No sample tube is loaded on a selected port. |
Action E: | Enure the port valve is closed. Install a plug or empty sample tube on the port. |
Cause F: | A gas inlet valve is open while the vacuum valve is open. |
Action F: | Enable manual control, then use the analyzer schematic to close the gas inlet valve. See Enable Manual Control. |

Cause A: | Oil-based Pump Only. Vacuum pump oil is low, causing ineffective evacuation. |
Action A: | Add or change vacuum pump oil. Add oil to proper level according to oil level window. |
Cause B: | Oil-based Pump Only. No power to the vacuum pump. |
Action B: | Check the pump power plug, power switch, and line circuit breaker. |
Cause C: | Oil-based Pump Only. Filter in port being used is dirty. |
Action C: | Replace filter in port. See Replace the Analysis Port Filter. |
Cause D: | Oil-based Pump Only. The alumina in the oil vapor trap is holding moisture. |
Action D: |
Replace or dry the alumina. Log in to your customer portal to access the Vacuum Pump Guide for information on replacing and drying alumina. |
Cause E: | Oil Free Pump Only. Filter in port being used is dirty. |
Action E: | Replace filter in port. See Replace Port Filters. |
Cause F: | Oil Free Pump Only. High vacuum pump may have timed out. |
Action F: | Power OFF the high vacuum pump, then power if back ON. |
Cause G: | Oil Free Pump Only. No power to the vacuum pump. |
Action G: | Check the pump power plug, power switch, and line circuit breaker. |
Cause H: | Oil Free Pump Only. The diaphragm(s) in the pump is worn or damaged. |
Action H: | Contact your Micromeritics Service Representative. |
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