Common Causes of Abnormal Pressure Increase in Agilent 7800 ICP-MS Vacuum System

1. Pre-stage vacuum pump issues: Degraded oil (dark color or insufficient level), blocked/damaged/loose exhaust lines, incorrect ballast valve position (not in "Open" state for NeoDry36E models).
2. Vacuum line problems: Leaks (e.g., after instrument movement), damage or clogging in vacuum lines (between vacuum chamber and pump, turbine pump and valve).
3. Potential seal/valve faults: Deteriorated seals or malfunctioning valves leading to air leakage.

Corresponding Solutions

1. Pre-stage pump maintenance: Check oil level and color monthly (replace oil every 6 months or when degraded); inspect exhaust lines for blockages/damage and ensure tight connections; verify ballast valve is open (for NeoDry36E).
2. Vacuum line troubleshooting: Conduct leak detection if leaks are suspected (e.g., post-movement); repair or replace damaged/clogged vacuum lines.
3. Professional support: For persistent issues, consult technical experts to diagnose seal/valve faults or other complex problems.

Service Recommendation

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