SOP – Engineering – Checklist – Diesel Generator Exhaust Fan Maintenance

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Diesel Generator Exhaust Fan Maintenance

Regular maintenance of the diesel generator exhaust fan is important to ensure its efficient operation. It is recommended to perform the maintenance at least once every six months or more frequently based on the manufacturer’s recommendations and usage.

Here is a checklist for the maintenance of the diesel generator exhaust fan:

  • Inspect the fan blades for any damage or wear and tear. If there are any cracks or chips in the blades, they need to be replaced.
  • Check the belt tension and belt condition. If the belt is loose or damaged, it can affect the performance of the fan.
  • Lubricate the bearings and motor if required. This will help to reduce friction and prevent any damage to the fan.
  • Check the alignment of the fan and motor. Misalignment can cause excessive vibration and noise.
  • Clean the fan blades and housing to remove any dirt or debris that may have accumulated. This will help to improve the airflow and reduce the risk of overheating.
  • By following this checklist, you can ensure that your diesel generator exhaust fan operates efficiently and lasts longer. Regular maintenance can help to prevent breakdowns and reduce the risk of costly repairs.

Diesel Generator Exhaust Fan Maintenance Checklist and Procedure:

Required Tools:

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

Consumable Parts:

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

Diesel Generator Exhaust Fan 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 time settings.
  •  Check for any loose electrical connection.
  •  Check for any loose & burnt electrical connections.
  •  Check the MCB rating and verify with the recommended Amp.
  •  Check the Terminal Plate, Any burnt and broken plates need to be replaced.
  •  Check the motor bearing.
  •  Perform oiling, greasing, or changing the bearing if required.
  •  Check the internal Resistance Value.

Exhaust Fax :

  • Check the shaft position, in case the shaft is loose tight it.
  •  Check the shaft alignment and fix it if required.
  •  Check the key position and any loose key to be replaced or tightened.
  •  Check the fan blade positions, and any loose blades to be tightened.
  •  Change or replace any broken fan or fan leaf.
  •  Check the ball bearing and if required do oiling/greasing.
  •  Change the bearing if it is noisy.
  •  Check the oil level of the gear.
  •  Check and verify the gear assembly, and any broken teeth to be replaced.
  •  Check the foundation and verify if it is broken/loose.

Other points to check:

  • Check that the full Load motor capacity should be 28 Amp.
  •  Check and verify the overload relay setting should be 16 Amp.
  •  The overload relay range should be between 14Amp to 23Amp.
  •  Check and verify the control fuse rating at 4 Amp.
  •  Check and verify the MCB rating should be at 250 Amp.
  •  Check and verify the timer settings should be set at 6-7 sec.

Remarks by the Technician:



Training questions based on the provided Diesel Generator Exhaust Fan Maintenance SOP:

  1. Why is regular maintenance of the diesel generator exhaust fan important, and how often is it recommended to perform the maintenance?
  2. List three specific items to inspect on the fan blades during the maintenance of the diesel generator exhaust fan.
  3. Why is checking the belt tension and condition crucial for the efficient performance of the exhaust fan?
  4. What is the purpose of lubricating the bearings and motor during the maintenance of the diesel generator exhaust fan?
  5. Explain why misalignment of the fan and motor can lead to issues such as excessive vibration and noise.
  6. What are the benefits of cleaning the fan blades and housing during the maintenance process?
  7. Name three tools required for the diesel generator exhaust fan maintenance and briefly explain the purpose of one of them.
  8. List three consumable parts mentioned in the SOP for diesel generator exhaust fan maintenance and provide the purpose of one of them.
  9. What is the recommended HP (Horsepower) for the motor in the diesel generator exhaust fan, according to the SOP?
  10. What activities are involved in checking the motor during the maintenance process, and why is it important to check the internal resistance value?
  11. Explain the steps involved in checking the exhaust fan shaft position and alignment during maintenance.
  12. What information should be recorded under “Remarks by the Technician” in the SOP, and why is it important to document this information?
SOP Number: Hotel Engineering SOP – 21
Department: Engineering and Maintenance
Date Issued: 14–Mar-2018
Time to Train: 30 Minutes
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