Hoefer FH225V - Manual (Page 15)

3. Troubleshooting
Sample leaks
• Wet filter before laying it on the support grid.
• Check the ridge on each chimney weight. If the
ridge is damaged, it must be replaced.
Sample remains in well
• Wet filter before laying it on the support grid.
• Close all valves not in use.
• Make sure there is sufficient vacuum. If using house
vacuum or an aspirator, try using a vacuum pump.
• Check the reservoir gasket for worn areas, and
replace if necessary.
• If the gasket is leaking, try applying a thin film of
lubricant (such as GelSeal) around the perimeter
of the gasket.
•
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