SOP – Engineering – Checklist – Air Blower For Sewage Treatment Plant

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Standard Operating Procedure for Air Blower Sewage Treatment Plant

When it comes to ensuring the effective functioning of a sewage treatment plant, air blowers are an integral part of the process. These machines are responsible for providing the necessary oxygen to the microorganisms that break down the organic matter in the sewage.

To ensure that the air blower is working optimally, it is important to conduct regular checks and maintenance. This is where an SOP (Standard Operating Procedure) comes into play. An SOP is a step-by-step guide that outlines the procedures for operating and maintaining equipment.

When creating an SOP for the air blower in a sewage treatment plant, it is important to include a checklist of items that need to be inspected and maintained. This can include checking the air filter, ensuring proper lubrication, inspecting the belts and pulleys, and checking for any leaks or abnormal sounds.

Regularly following the SOP and checklist for the air blower will not only ensure its optimal performance but also prevent any potential breakdowns or malfunctions. This, in turn, will help to maintain the efficiency and effectiveness of the sewage treatment plant, ultimately contributing to a cleaner and healthier environment.

Air Blower For Sewage Treatment Plant Checklist and Procedure:

Required Tools:

  • Screwdriver.
  •  Clamp meter.
  •  Crimping Tool.
  •  Megger.
  •  Oil Can.
  •  Air Blower.
  •  Grease Gun.
  •  Plier.
  •  Spanner Set.
  •  Brush.
  •  Line Tester.

Consumable Parts:

  • PVC tape.
  •  Old clothes.
  •  WD- 40.
  •  Lubricating Oil.
  •  Grease.
  •  Carbon removing compound.

Air Blower For Sewage Treatment Plant Maintenance Activity:


  • The motor Should be of minimum 20 HP.
  •  Electrical control should be proper.
  •  Check for any burnt contact, loose electrical connection, and overall operation to be checked.
  •  The overload relay should be checked.
  •  Check the operation of the relay, setting, and loose electrical connections.
  •  Check the timer operation and timer settings.
  •  Check for any loose electrical connection.
  •  Check for any burnt electrical connection.
  •  Check the MCB rating and verify with the recommended Amp.
  •  Check the motor bearing.
  •  Perform oiling, greasing, or changing the bearing if required.
  •  Check the internal Resistance Value.


  • The Compressor filter should be checked for any sand/dust and to be cleaned.
  •  Air pressure setting in pressure gauge to be verified and set to the correct settings.
  •  Check the V-belt if the same is loose or broken, then it should be replaced.
  •  Check the bearing and do oiling/greasing.
  •  The bearing is to be changed if it is noisy.

Other points to check:

  • Check that the full Load motor capacity should be 28 Amp.
  •  Check and verify the overload setting should be 16Amp.
  •  The overload relay range should be between 14Amp to 23 Amp.
  •  The timer Setting should be at 09 Sec.
  •  Check and verify the control fuse rating at 4 Amp.
  •  Check and verify the MCB rating should be at 100 Amp.

Remarks by the Technician:



Training Questions:

  1. Why are air blowers crucial in sewage treatment plants?
  2. What is the purpose of the air blower in a sewage treatment plant?
  3. Why is it important to conduct regular checks and maintenance on the air blower?
  4. What are some key items to include in the checklist for air blower maintenance in a sewage treatment plant?
  5. Explain the importance of checking the air filter during maintenance.
  6. What role does lubrication play in the maintenance of the air blower motor?
  7. Why is it necessary to inspect belts and pulleys during maintenance?
  8. What are the potential issues associated with leaks in the air blower?
  9. Describe the steps involved in checking the motor during air blower maintenance.
  10. Why is it crucial to check the compressor filter during maintenance?
  11. What should be verified regarding the air pressure setting in the pressure gauge?
  12. Explain the importance of checking the V-belt during air blower maintenance.
  13. What actions should be taken if the motor bearing is noisy during the maintenance check?
  14. What is the significance of checking the timer setting during maintenance?
  15. List some required tools and consumable parts for air blower maintenance.
SOP Number: Hotel Engineering SOP  – 11
Department: Engineering and Maintenance
Date Issued: 22–Feb-2018
Time to Train: 20 Minutes

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