Monthly
Visual inspection for oil leaks, loose fasteners and lining wear; verify release stroke and air gap; check thruster oil level; record amperage on holding coils.
Quarterly
Measure brake torque (where torque-test kit is available); cycle the brake under no-load and observe release / engage time; inspect microswitches and wear sensors.
Annual
Replace linings if at wear limit; replace thruster oil and seals; full functional test under simulated load; calibrate overspeed switch; document and trend results.
After any emergency stop
Inspect linings and disc for heat damage; verify torque; reset wear sensors.