Mazak 377/382 alarm: Low coolant level or malfunction

Mazak detects low coolant level or a coolant system fault. It is an alarm from the Coolant area, and in the catalog it is listed as “Low coolant level or malfunction”. On the machine you notice it like this: Alarm when activating coolant, Caudal bajo, Incorrect tank or pump.

On the shop floor it almost always comes from one of these causes: Nivel bajo, Bomba/filtro, Sensor de nivel, High pressure system. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset tras recuperar caudal/nivel. Resetting without fixing the cause first only hides the problem: Mazak 377/382 trips again and, in the meantime, you keep working with the machine in bad shape.

With the machine stopped and in a safe state, start with these checks: Check the level and the filters, Probar bomba en manual, Do not machine without coolant when it is required. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Mazak 377/382 active, avoid this: Do not bypass safety devices, Do not manipulate energized electrical cabinet, Do not continue producing if the alarm reappears. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If the pump does not respond or the sensor does not change state. If you are not sure how far it goes, stop the machine and report it: a repeat alarm always works out cheaper than a crash.

It is a warning: the machine carries on, but it is flagging something that will get worse if you let it go. Deal with it between parts, not at the end of the shift. Guidance reference. Always confirm the full text in the exact machine/control manual.