Okuma Alarm-C 3745 Mist lubrication unit
The mist lubrication unit failed (for oil-mist turret lubrication types).
2->The turret oil-mist drip sensor switch kept ON for 30 second or longer.
3->The turret oil-mist drip sensor input kept OFF through successive two cycles, each cycle starting witn the oil-mist turret lubrication pump drive air ON signal ON and ending with this signal OFF.
4->The initial dripping at power-up by the oil-mist lubrication unit has not been completed
5->The oil-mist turret lubricant level alarm/switch kept OFF for 3 second or longer.
6->The oil-mist turret lubrication pressure alarm/switch turned OFF with the oil-mist turret trication ON signal ON.
7->The oilmist supply or oilmist flow sensor did not turn ON within the oilmist flow monitor time.
8->The oilmist flow sensor did not turn ON within the oilmist flow monitor for time.
Probable Faulty Locations
4->If the initial operation for dripping oil is not completed when the power is supplied to the turret oil-mist lubrication system, the M-tool spindle is not lubricated, and so it cannot rotate. Initial operation for dripping oil is executed each time the power is supplied. If this alarm occurs, turn OFF the power and then turn it back ON to execute initial operation. When the power is supplied, the turret oil-mist lubrication pump drives the air unit. The interval from ON to OFF of the output signal indicating this pump operation is regarded as one cycle. One cycle is executed in one second. The turret oil mist drip sensor input should come ON at least one time in one cycle until the number of cycles reaches 100. When the sensor input comes ON in three cycles successively, the initial operation is completed. If the initial operation is not completed within 100 cycles, this alarm occurs. If this alarm still occurs after retrial of initial operation, the oil mist lubrication unit may be faulty.
5->A lower oil-mist lubricant level or faulty oil-mist lubrication unit