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Fans Presentation.ppt

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Ziad Salem
Ziad Salem

The document provides maintenance instructions for an induced draft fan used in a kiln. It discusses checking the fan bearings, motor winding temperature, vibration levels, and noise on a regular basis. Specific maintenance tasks are outlined including checking for oil leaks weekly, alarm and trip conditions, wearing parts to examine, notes on wear patterns, and periodically checking the oil levels of non-drive end bearings. The instructions aim to properly maintain the fan to avoid issues like erosion, excessive vibration, and bearing failure.

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The centrifugal fan is the heaviest of the three designs for any given duty with the largest rotor weight and inertia With respect to maintenance, the access to the bearings is good, allowing simple replacement. The rotor removal is relatively straightforward Maintenance ‫الصيانة‬
The fan should not be operated unless the vibration velocity of the fan is less than 0.20 inches per second FanVibrationChart ‫المروحة‬ ‫إهتزاز‬ ‫مخطط‬
Fans Presentation.ppt
Fans Presentation.ppt
Fans Presentation.ppt
Fans Presentation.ppt
Fans Presentation.ppt
Fans Presentation.ppt
Material buildup on Impeller ‫الم‬ ‫ريش‬ ‫على‬ ‫الخام‬ ‫تراكم‬ ‫روحة‬ ( ‫التكويت‬ ) Thermal ‫حرارى‬ Chemical ‫كيميائى‬ Mechanical ‫ميكانيكى‬ Electrostatic ‫كهربائى‬
Vibration - Hot shutdown effect ‫المفاجئ‬ ‫التوقف‬ ‫تأثير‬ - ‫اإلهتزاز‬
Inlet box Erosion-effect of Improper inlet connection ‫مناسب‬ ‫الغير‬ ‫المدخل‬ ‫على‬ ‫التآكل‬ ‫تأثير‬
Erosion –liner material ‫للتآكل‬ ‫المقاومة‬ ‫المبطنة‬ ‫الخامة‬
Maintenance Instructions for Kiln Induced Draft Fan ‫الفرن‬ ‫سحب‬ ‫لمروحة‬ ‫الصيانة‬ ‫تعلميات‬ A - Check the following per shift : 1. Check the oil level in the fan bearings. 2. Observe the bearings temp and vibration levels. 3. Check the main motor winding temp. 4. Listen for any excessive or abnormal noise. 5. Observe the fan speed.
B - Check the following per week. 1. Follow the previous items. 2. Check if there is oil leakages
C - Alarm and trip conditions. Trip Alarm Function ~ 85 oC ~ 75 oC Temp.o 9.5 mm/s RMS 5.5 mm/s RMS Vibration
D - Check the following for wear. 1. Examine The Following 2. Fan casing. 3. Inlet boxes. 4. Louver damper (blades, spindles and supports). 5. Impeller.
E - Notes on wear. ‫التآكل‬ ‫على‬ ‫مالحظات‬ 1. Abrasive action on fan impeller is most severe at blade tips and at the periphery at centre or side plates. 2. Blade liners and wear strips to protect the blades. 3. The liners should be always be replaced completely as soon as the erosion on tem is too severe. 4. It is dangerous to weld alloy steel unless the correct procedure is known and followed.
F - Check periodically the oil levels for bearing gear at non-drive end of fan shaft ‫الحركة‬ ‫إدارة‬ ‫تروس‬ ‫لبلى‬ ‫الزيت‬ ‫مستويات‬ ‫فترات‬ ‫على‬ ‫إفحص‬ ‫البطيئة‬ Bearing gear will continue to turn the fan at ~ 25 r. p.m after main drive has been switched off. Note:
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Fans Presentation.ppt

  • 1. The centrifugal fan is the heaviest of the three designs for any given duty with the largest rotor weight and inertia With respect to maintenance, the access to the bearings is good, allowing simple replacement. The rotor removal is relatively straightforward Maintenance ‫الصيانة‬
  • 2. The fan should not be operated unless the vibration velocity of the fan is less than 0.20 inches per second FanVibrationChart ‫المروحة‬ ‫إهتزاز‬ ‫مخطط‬
  • 9. Material buildup on Impeller ‫الم‬ ‫ريش‬ ‫على‬ ‫الخام‬ ‫تراكم‬ ‫روحة‬ ( ‫التكويت‬ ) Thermal ‫حرارى‬ Chemical ‫كيميائى‬ Mechanical ‫ميكانيكى‬ Electrostatic ‫كهربائى‬
  • 10. Vibration - Hot shutdown effect ‫المفاجئ‬ ‫التوقف‬ ‫تأثير‬ - ‫اإلهتزاز‬
  • 11. Inlet box Erosion-effect of Improper inlet connection ‫مناسب‬ ‫الغير‬ ‫المدخل‬ ‫على‬ ‫التآكل‬ ‫تأثير‬
  • 12. Erosion –liner material ‫للتآكل‬ ‫المقاومة‬ ‫المبطنة‬ ‫الخامة‬
  • 13. Maintenance Instructions for Kiln Induced Draft Fan ‫الفرن‬ ‫سحب‬ ‫لمروحة‬ ‫الصيانة‬ ‫تعلميات‬ A - Check the following per shift : 1. Check the oil level in the fan bearings. 2. Observe the bearings temp and vibration levels. 3. Check the main motor winding temp. 4. Listen for any excessive or abnormal noise. 5. Observe the fan speed.
  • 14. B - Check the following per week. 1. Follow the previous items. 2. Check if there is oil leakages
  • 15. C - Alarm and trip conditions. Trip Alarm Function ~ 85 oC ~ 75 oC Temp.o 9.5 mm/s RMS 5.5 mm/s RMS Vibration
  • 16. D - Check the following for wear. 1. Examine The Following 2. Fan casing. 3. Inlet boxes. 4. Louver damper (blades, spindles and supports). 5. Impeller.
  • 17. E - Notes on wear. ‫التآكل‬ ‫على‬ ‫مالحظات‬ 1. Abrasive action on fan impeller is most severe at blade tips and at the periphery at centre or side plates. 2. Blade liners and wear strips to protect the blades. 3. The liners should be always be replaced completely as soon as the erosion on tem is too severe. 4. It is dangerous to weld alloy steel unless the correct procedure is known and followed.
  • 18. F - Check periodically the oil levels for bearing gear at non-drive end of fan shaft ‫الحركة‬ ‫إدارة‬ ‫تروس‬ ‫لبلى‬ ‫الزيت‬ ‫مستويات‬ ‫فترات‬ ‫على‬ ‫إفحص‬ ‫البطيئة‬ Bearing gear will continue to turn the fan at ~ 25 r. p.m after main drive has been switched off. Note: