Fruitland Manufacturing
Troubleshooting Services
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).
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Issue - Overheating:
- Lack of oil
- Wrong type of oil (See FAQ)
- Cooling fins of casing plugged with dirt
- Pump run 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
NOTE: A slight metallic noise at high vacuum (above) 23-24Hg is normal. The expanded air is too weak to hold the non-return valve (back-up valve) completely open and consequently causes the closing disk to flutter.