1. Low wind pressure and high current: This happens more often, the main reason is that there is too much dust on the inlet filter of the Roots vacuum pump and it is not cleaned in time. Clean the filter carefully and the problem will be solved. This requires us to clean the filter screen frequently in production to ensure that the inlet of the Roots vacuum pump is unobstructed, which is not only conducive to the operation of the equipment, but also will not affect the calcination.

2. There is a collision between the impeller and the impeller of the Roots vacuum pump: the gear teeth are displaced; the elimination method is to adjust the gap and tighten. Exceed the rated pressure operation; the elimination method is to check the cause of the overpressure and eliminate it. The tooth surface wears and the backlash increases, resulting in a change in the clearance between the impellers; the elimination method is to adjust the clearance.

3. Roots vacuum pump casing vibration:
①The maintenance work is not done well during use. ② Roots drum vacuum pump has been used for too long. When disassembling the machine, measure the matching dimensions of the machine.