Troubleshooting
Answers for Lack of Vacuum in Tank, Overheating or Pump not Turning
Issue – Lack of Vacuum in Tank:
- Tank not closed or leaking
- Collapsed hose: check wear and replace
- Stuck automatic floating shut-off: put pump on pressure for a moment
- Pump running backward after stopping: stuck or broken non-return valve (back-up valve)
Issue – Overheating:
- Lack of oil
- Wrong type of oil (See FAQ)
- Cooling fins of casing plugged with dirt
- Pump runs for too long WITHOUT air passing inside the pump (see manual)
- RPM too high
- Broken oil pump
- Clogged oil line
- Collapsed hose
- Clogged filter or muffler
Issue – Pump not Turning:
- Foreign material may be lodged in pump
- Pump frozen up (winter conditions)
- Vane or housing broken
- Pump overheated