In daily production on BEIREN series presses, delivery faults are among the most common problems encountered by press operators and maintenance personnel. As a representative of domestic Chinese offset presses, this model features strong parts interchangeability, low maintenance costs, and electrical systems mostly controlled by domestic PLCs. If not dealt with promptly, the consequences range from impaired registration accuracy and print quality to extended downtime in severe cases.
1. Fault symptoms: Inconsistent stacking, sheets falling, skewed pile on the delivery stacker, and back-side marking caused by uneven powder spraying.
2. Cause analysis: Incorrect timing of the delivery chain and gripper opening/closing; improper powder spray volume or blocked nozzles; misadjusted jogger mechanism; failed braking rollers/suction wheels. Given that the BEIREN is a representative domestic offset press with strong parts interchangeability, low maintenance costs, and domestic PLC-controlled electrical systems, troubleshooting should prioritize checking key components against standard parameters.
3. Maintenance guide: Correct the delivery gripper opening/closing timing and chain phase; clean nozzles and set powder spray volume according to paper weight; adjust the front and side joggers; inspect the suction wheels and braking rollers.
4. Routine maintenance: Regularly clean the powder spray system; check delivery chain lubrication; set delivery parameters according to paper type. The above methods also apply to models such as BEIREN 300, BEIREN 400, PZ4880, and N300. For practical operation, refer to the domestic CNC system / centralized lubrication control and on-site conditions. For complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
