Clean the Dust Filter
Applicable only to 2000 cm3 units and 100 cm3 high pressure units. |
Dust from the sample may be carried into the instrument plumbing. A dust filter protects the valves, minimizing valve leaks.
- Press Alt+1 to enter Manual mode.
- Close the Fill valve. Open the Expansion and Vent valves to ensure that the system is not under pressure.
- At the lower rear of the instrument, remove the two screws which hold the dust filter cover and remove the cover plate.
- Remove the spring and the filter. Remove the small O-ring inside the filter port.
- Clean all parts with alcohol. The filter may require sonication to dislodge dust. It should be replaced if it becomes severely clogged.
- Inspect the O-rings before re-assembly. A very thin coating of vacuum grease may be used.
- Re-assemble.
- Check for leaks:
- Fill the system with gas.
- Open Expansion valve.
- Check for leaks by applying a leak detecting liquid around the dust filter cover.
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