- Loud, high-pitched noise coming from scroll rough vacuum pump
- Grinding noise coming from scroll rough vacuum pump
- QTof Premier
- Synapt MS/HDMS
- Synapt G2 MS/HDMS
- Synapt G2-Si MS/HDMS
- Xevo TQD
- Xevo TQD IVD
Graphite seal tips are worn or damaged; pump was not rebuilt properly; rotor is out of alignment
FIX or WORKAROUND
- Replace seal tips.
- Start pumping sequence.
- If noise persists, replace the pump.
Depending on the manufacturer, replacement pump may need to be set to appropriate working voltage. Consult the user manual supplied with the pump.