Troubleshooting
Central lubrication alarms: no output, blocked line, low level
A first-response table for automatic systems. What it usually is and what to check first.
First response
| Symptom | Likely cause | Check first |
|---|---|---|
| Low-level alarm | Reservoir nearly empty | Refill with the correct grease. Check consumption against the last refill date, since a sudden change points to a leak |
| Pump runs, no grease reaches the points | Air in the reservoir or pump, empty tank, worn pump element, grease too stiff for the temperature | Stirring paddle and level. Vent the line. Check grease grade against the cold |
| Pressure alarm or system stalls | A blocked metering device, a kinked or crushed hose, a blocked outlet | Follow the line to the point that is not receiving grease. On progressive systems, check each block in order |
| One point never gets grease | Blocked or damaged feed line, blocked fitting, wrong fitting | Disconnect at the point and test the flow |
| Grease leaks at fittings | Over-pressure, damaged line, wrong fitting | Check pressure setting and pump element size |
| Pump does not start | Supply, fuse, controller setting, cycle not triggered | Supply voltage, cycle settings and signals from the machine |
Prevent a repeat
- Clean grease in clean containers. Dirt in the reservoir is the usual cause of a blocked metering device.
- Use only the grease grade the system was designed for.
- Record the alarm and the fix in a log so patterns show up.
Takeaway. Most automatic-system faults are a blocked point, an empty tank or the wrong grease. Check those three first.
Put it to work in the tool