Reasons and measures for low vacuum degree of Qihengda packaging machine;
1. pump oil pollution, too little or too thin, need to clean the vacuum pump or replace the new vacuum pump oil;
2. pumping time is too short, pumping time is extended;
3. if the exhaust filter is clogged, the exhaust filter should be cleaned or replaced;
4. if there is air leakage, turn off the power after pumping and check whether there is air leakage in the solenoid valve, pipe joints, vacuum pump suction valve, and gaskets around the working room.