Roots blower may encounter various faults during operation. Here are some common faults and their maintenance methods:
1、 Insufficient air volume
Reason for malfunction:
The imported filter is clogged.
The wear of the impeller causes excessive clearance between various parts.
The pipeline is too long and there is air leakage.
The belt slips.
Without lubricating oil, the lack of oil in the fan caused the bearings to detach.
Repair method:
Remove dust and blockages from the filter, and replace it if necessary.
Repair the gap and ensure that the gap between the impellers is within the specified range.
Tighten all connections and repair leaking components.
Tighten the belt, increase the number, and replace it with a new belt if necessary.
Add lubricating oil to ensure good lubrication of the fan.
2、 High fan temperature
Reason for malfunction:
Overloaded operation.
The inlet filter of the fan is clogged.
The gaps between various parts inside the shell increase.
Lubricating oil is missing or of poor quality.
The belt slips and the lubricating grease calcifies.
Repair method:
Adjust the load of the fan to avoid overloading operation.
Remove the blockage from the inlet filter.
Check and repair the gaps in various parts of the shell.
Replace with new lubricating oil to ensure good oil quality.
Tighten the belt to prevent slipping, and replace the calcified lubricating grease.
3、 Loud noise
Reason for malfunction:
Pipeline blockage causes an increase in pressure.
Improper installation of the belt cover causes vibration.
Bearing wear.
Impeller abrasion.
No lubricating oil or poor lubrication.
Loose pulley or slipping V-belt.
Repair method:
Remove pipeline blockages and reduce pressure.
Reinstall the belt cover to ensure its stability.
Replace worn bearings.
Repair the damaged impeller.
Add lubricating oil to ensure good lubrication.
Tighten the pulley to prevent loosening, and replace the slipping V-belt.
4、 Oil leakage and high fuel consumption
Reason for malfunction:
Overloaded operation.
The damaged seal caused oil leakage in the fan.
Excessive temperature causes lubricating oil to evaporate and splash.
Repair method:
Adjust the load of the fan to avoid overloading operation.
Replace damaged seals to ensure good sealing.
Reduce the temperature of the fan and minimize the evaporation and splashing of lubricating oil.
5、 Belt damage
Reason for malfunction:
Overloaded operation.
The belt slips.
The motor and fan pulleys are not parallel.
Repair method:
Adjust the load of the fan to avoid overloading operation.
Tighten the belt to prevent slipping.
Adjust the parallelism of the motor and fan pulleys to ensure they are parallel.
6、 Other common faults
Boost increase: Check the exhaust pressure and load condition to reduce the pressure difference.
Friction between impeller and cylinder wall: Adjust the clearance to ensure that the clearance between impeller and cylinder wall is within the specified range.
High fan speed: Replace the appropriate pulley and reduce the fan speed.
7、 Maintenance precautions
During the maintenance process, safety operating procedures should be strictly followed to ensure personal safety.
During maintenance, a comprehensive inspection of the fan should be conducted to identify the root cause of the malfunction and avoid treating symptoms without addressing the root cause.
When replacing components, it is important to ensure that the model and specifications of the new component are consistent with the original one to avoid malfunctions caused by mismatches.
After the maintenance is completed, a trial run should be conducted and the performance of the fan should be checked to ensure everything is normal.
In summary, common faults of Roots blowers include insufficient air volume, high fan temperature, loud noise, oil leakage and high fuel consumption, belt damage, etc. Corresponding maintenance methods should be adopted to deal with these faults, and attention should be paid to safety and details during the maintenance process.
