Okuma Alarm-A 8616 Coolant level low
The coolant level is low.
The float switch within the coolant tank turned OFF the coolant normal signal or turned ON the coolant error signal during execution of high-pressure thru-the-tool coolant command.
1->The Coolant tank level is low.
2->The oil hole (through spindle coolant) tank is level low.
3->The high pressure oil hole (through spindle coolant) tank is level low.
Measures to Take
Supply coolant to the tank.