Oil reservoir evacuation for pumping condensable vapours through oil sealed rotary vane pumps

Lachenmann, R.

doi:10.1016/0042-207x(88)90437-x

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2022

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Cited by 6 publications

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“…If the lubricant begins to boil due to excess heat or the presence of a volatile contaminant (e.g., organic solvent), the gastight seal may be compromised, decreasing the maximum achievable vacuum. 3,4 Solvent contamination of the pump oil can also dramatically reduce the longevity of the pump. Organic solvents can cause swelling of the vanes which are often made from reinforced plastic.…”

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confidence: 99%

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Open Source, 3D-Printed TrapGuard to Protect Oil-Sealed Vacuum Pumps from Cold Trap Warming

2022

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Clean pump oil is critical to the performance and longevity of oil-sealed vacuum pumps. Cold traps charged with cryogens can protect pump oil from solvent contamination but are subject to operator error. Notably, cold traps with evaporated or warmed cryogens do not protect the vacuum pump. Here, we report an open source device to automatically protect oil-sealed vacuum pumps from cold trap warming and facilitate the daily maintenance of cold traps.

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confidence: 99%

“…The maximum achievable vacuum is governed by the vapor pressure of this thin film. If the lubricant begins to boil due to excess heat or the presence of a volatile contaminant (e.g., organic solvent), the gastight seal may be compromised, decreasing the maximum achievable vacuum. , …”

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confidence: 99%