In daily production on BEIREN series presses, the air pump vacuum system is one of the most frequent trouble spots for press operators and maintenance personnel. As a representative domestic offset press, this model features strong parts interchangeability and low maintenance costs, with electrical systems mostly controlled by domestic PLCs. If problems are not addressed promptly, they can range from affecting registration accuracy and print quality to causing extended downtime in severe cases.
I. Fault symptoms: Insufficient suction at the feeder, weak suction at the delivery, unstable vacuum gauge readings, abnormal noise and overheating from the air pump.
II. Cause analysis: Worn vacuum pump vanes, carbon dust buildup, cracked or leaking air hoses, clogged filters, and oil-contaminated mufflers. Given that the Beiren is a representative domestic offset press with strong parts interchangeability, low maintenance costs, and domestic PLC-based electrical control, troubleshooting should prioritize checking key components and standard parameters.
III. Operational misconceptions: Replacing vacuum pump vanes and cleaning the chamber, leak-checking and replacing damaged air hoses, cleaning or replacing filters, and cleaning oil-clogged mufflers.
IV. Common mistakes: Never blindly increase pressure or water supply based on experience; any parameter changes on the Beiren control panel must be recorded and re-verified; do not forcibly turn the machine by hand or bypass safety interlocks while the press is running.
V. Preventive measures: Regularly change oil and filter elements, listen for abnormal noise as an early warning, and keep the air path dry. The above methods also apply to models such as the Beiren 300, Beiren 400, PZ4880, and N300. For actual operations, refer to the domestic CNC system / centralized lubrication control and on-site conditions. For complex situations, it is recommended to seek professional maintenance assistance through the printm.cn platform.
