Knowledge Hub

Key points in selecting equipment for troubleshooting abnormal pumping speeds：For abnormal pumping, separate pump performance, line resistance and sample outgassing using baseline comparisons. Repeat baseline and loaded checks after servicing or seal replacement; retain before-and-after curves to confirm recovery of the drying endpoint and atmosphere stability.

Vacuum maintenance testing process verification and risk control：For vacuum hold, compare empty and loaded chambers to avoid misidentifying outgassing as leakage. Compare empty and loaded pump-down curves to distinguish leaks, sample outgassing and vapour load; one pressure-rise result cannot by itself establish seal failure.

Key points for selecting vacuum maintenance test equipment：For vacuum hold, compare empty and loaded chambers to avoid misidentifying outgassing as leakage. Compare empty and loaded pump-down curves to distinguish leaks, sample outgassing and vapour load; one pressure-rise result cannot by itself establish seal failure.

Leak risk assessment process verification and risk control：For leak risk, use oxygen curves and drying endpoints to judge process impact and retain before-and-after service data. Record pressure-hold behaviour at the same temperature and isolation conditions, then inspect door seals, valves, joints, gauge lines and the pump.

Key points for selecting leakage risk assessment equipment：For leak risk, use oxygen curves and drying endpoints to judge process impact and retain before-and-after service data. Record pressure-hold behaviour at the same temperature and isolation conditions, then inspect door seals, valves, joints, gauge lines and the pump.

Sealing material compatibility process verification and risk control：For seal materials, check temperature, solvent and gas compatibility and validate actual conditions after replacement. Repeat baseline and loaded checks after servicing or seal replacement; retain before-and-after curves to confirm recovery of the drying endpoint and atmosphere stability.

Key points for selecting equipment for sealing material compatibility：For seal materials, check temperature, solvent and gas compatibility and validate actual conditions after replacement. Repeat baseline and loaded checks after servicing or seal replacement; retain before-and-after curves to confirm recovery of the drying endpoint and atmosphere stability.

Troubleshoot with empty-chamber pump-down and isolated-hold curves at the same temperature, then add trays and samples progressively to distinguish leakage from increased outgassing. Record pressure-hold behaviour at the same temperature and isolation conditions, then inspect door seals, valves, joints, gauge lines and the pump.