GM50L Blower Abnormal Noise & Rotor Rubbing Repair

1. Project Overview

• Industry: Wastewater Treatment

• Equipment: GM50L Roots Blower

• Failure Type: Abnormal Noise / Rotor Rubbing

• Year: 2024

2. Project Background

The client operates a wastewater treatment plant where stable blower performance is essential for aeration processes.

During operation, the GM50L blower developed abnormal noise and vibration, indicating internal mechanical issues.

3. Problem / Failure Analysis

• Abnormal noise during operation

• Increased vibration level

• Evidence of rotor contact with side plate

• Risk of progressive internal damage

4. Root Cause

Detailed inspection revealed:

• Rotor misalignment inside the casing

• Reduced internal clearance

• Mechanical interference between rotor and side plate

• Possible long-term wear combined with installation deviation

5. Our Solution

Procetek implemented a precision repair and alignment solution:

• Complete disassembly of the blower

• Inspection of rotor, casing, and side plates

• Correction of rotor alignment

• Restoration of internal clearance

• Reassembly with precision tolerance control

• Dynamic testing after repair

6. Scope of Work

• Equipment dismantling

• Fault diagnosis and clearance measurement

• Rotor alignment correction

• Component inspection and adjustment

• Reassembly and functional testing

7. Before & After Condition

Before Repair

• Blower with abnormal noise and vibration

• Rotor contact marks visible

During Repair

Disassembly and inspection process

After Repair

• Reassembled blower with corrected alignment

After repair, the blower operated smoothly with no abnormal noise or vibration.

8. Results

• Abnormal noise completely eliminated

• Vibration reduced to normal operating level

• Restored internal clearance and mechanical stability

• Avoided full equipment replacement cost

9. Why It Worked

• Accurate fault diagnosis

• Precision alignment capability

• Strong control of internal tolerances

• Experience in blower mechanical systems

10. Conclusion

This case demonstrates that precision mechanical correction can effectively restore blower performance without replacement, significantly reducing cost.

11. Call to Action

If your blower shows abnormal noise or vibration,

👉 contact us for diagnostic and repair solutions.