|Symptom||Possible Cause||Corrective Action|
|Alarm 121 LOW OIL LEVEL OR PRESSURE||Oil level is low.||Add oil.|
|The pressure switch is faulty.||Replace the pressure switch.|
|There is no voltage going to the pump, or the pump is damaged.||Check the voltage to the pump and I/O PCB.|
|The filter is clogged.||Remove the sintered Bronze filter.|
|The pump does not hold pressure.||There is a leak from the fittings.||Stop fittings from leaking. Replace if necessary.|
|Pressure remains high for more than 10 minutes.||One of the oil lines or metering units are clogged.||Clean out the clogged oil line or meter unit.|
Test the system for leaks by manually lifting the plunger. The gauge will show pressure and gradually drop to zero. This takes 3-10 minutes. If pressure drops immediately, check for leaks at the lube pump. Examine all axis linear guide trucks and ballscrews for signs of lubrication. Examine each of the flow meters, lube fittings, and connectors.
Look for drips of oil near the axis flow meters, tees, and connectors.
Check for leaks in the system. Start with the fittings located at the lube pump assembly. Repair the leaks.
Repair all leaks. Make sure the pressure is correct.
Clogged orifices are the only cause of high pressure for more than 10 minutes. Remove the cause of the clogged oil lines or meter units.