E21 press brake failure causes and solutions - sometimes the main motor automatically stop, heat relay, circuit breaker protection
E21 press brake failure causes and solutions - sometimes the main motor automatically stop, heat relay, circuit breaker protection E21 press brake failure reasons: 1. Proportional pressure valve and main pressure reducing valve are stuck, and the machine has been pressurized; 2. The filter element is blocked, the oil output is not smooth, and the oil pump pressure is always high; 3. The oil has been polluted for too long time; 4. Poor oil quality; 5, circuit breaker, heat relay… Read More »E21 press brake failure causes and solutions - sometimes the main motor automatically stop, heat relay, circuit breaker protection