When Roots blowers fail, the maintenance method will vary according to the specific fault type. The following are some common faults and corresponding maintenance suggestions:

1, impeller and impeller friction

1. Reasons:

- There are impurities on the impeller, resulting in too small clearance.

- Gear wear, resulting in large backlash.

- The gear is not firmly fixed and cannot keep the impeller synchronized.

2. Maintenance method:

- Remove impurities on the impeller to ensure that the clearance of the impeller is within the normal range. For example, if it is caused by dust or oil, it can be wiped clean with a clean cloth.

- Replace the worn gear and adjust the backlash to the appropriate value. For example, if the backlash is too large to exceed the standard value of 0.15-0.25mm, a new gear needs to be replaced.

- Reassemble the gear to ensure that it is firmly fixed so that the impeller can run in sync.

Second, the impeller and the wall plate, the top of the impeller and the shell friction

1. Reasons:

- Installation gap is incorrect.

- The operating pressure is too high, beyond the specified value.

- The operating temperature is too high, and the casing is deformed.

2. Maintenance method:

- Readjust the gap. Generally speaking, the axial clearance between the impeller and the wall panel should be 1.5-2.0mm, and the radial clearance between the top of the impeller and the housing should be 1.0-1.5mm.

- Check and adjust the system pressure to reduce to the specified range. For example, if the pressure is too high because of a blocked pipe, the pipe should be cleaned.

- Repair or replace deformed case.

3. The temperature is too high

1. Reasons:

- The oil in the tank is too much, too thick, too dirty.

- Filter or muffler is blocked.

- The pressure is above the specified value.

- Excessive wear of impeller, large clearance.

2. Maintenance method:

- Lower the oil level or replace it with new oil to make it meet the requirements. For example, adjust the oil level to the center line of the oil marker.

- Clean the filter or muffler to ensure smooth flow. If the filter element is damaged, replace it with a new filter element.

- Adjust pressure to normal range.

- Replace the impeller and adjust the clearance.

Fourth, insufficient flow

1. Reasons:

- The inlet filter is blocked.

- Impeller wear, increased clearance.

- Belt slip, not enough RPM.

- Pipe leak.

2. Maintenance method:

- Clean the inlet filter.

- Replace the impeller and repair the clearance.

- Tighten the belt or replace the new belt to ensure the normal speed. For example, if the belt is seriously worn, cracks or aging, it should be replaced in time.

- Check and repair pipeline leaks.

It should be noted that when carrying out the maintenance of Roots blower, it is necessary to stop the machine first and cut off the power supply to ensure safety. At the same time, if you are not familiar with the maintenance, it is recommended to seek the help of professional technicians.