A field troubleshooting guide for maintenance and plant engineers An electromagnetic brake that refuses to release can bring an entire line to a halt. On a conveyor, packaging machine, textile line, hoist or industrial motor, a brake that stays engaged means a stalled motor, a tripped overload, dragging friction linings and unplanned downtime. The good news: most no-release faults trace back to a short list of electrical and mechanical causes that a maintenance team can diagn