Page : 1 / 3 AXIAL FAN ( AN TYPE ) CHECK LIST Project : Unit : Application : Fan Type : Speed : Product no : Attended by : Period : I. DURING OVERHAULING 1. LPI Of Shaft Flange Welding : 2. LPI Of Blade Welding : 3. SHAFT (BEARING SEATING AREA) LOCATION Shaft OD BEARING INNER DIA BEARING CLEARANCE BEARING OUTER DIA HOUSING INNER DIA HOUSING TO BEARING OD CLEARANCE As per Drg DE - A NDE- A DE - B NDE- B DE - C N D E- C 4. Tightness Of Rotor Bolts and all fasteners with required Torque 5. VERTICALITY OF THE IMPELLER HOUSING Before : After : : BRG. TO HOUSING COVER CLEARANCE BEARIN G FACE OUT Page : 2 / 3 6. SHAFT WATER LEVEL : 7. BEARING FACE OUT COLD ALIGNMENT INNER BRG HOT ALIGNMENT OUTER BRG INNER BRG OUTER BRG 8. COUPLING ALIGNMENT COLD ALIGNMENT A1 HOT ALIGNMENT A2 R 00 A1 00 A2 00 00 00 00 9. COUPLING GAP As per drawing : Actual : 10. BLADE TIP CLEARANCE IGV CORE to IMPELLER 11. Servicing Of IGV Vane Brg. : 12. Smooth Operation Of IGV : 13. Calibration Of IGV w.r.t Actuator : R IMPELLER to DIFFUSER Page : 3 / 3 II.DURING TRIAL RUN 1. VIBRATION READINGS FAN DESCRIPTION LOCATION Horizontal (D/V) FAN -A Vertical (D/V) Axial (D/V) Horizontal (D/V) FAN -B Vertical (D/V) Axial (D/V) Horizontal (D/V) Vertical (D/V) Axial (D/V) FAN -C 2. BEARING TEMPERATURE: FAN DESCRIPTION FAN -A FAN -B FAN -C LOCATION INNER OUTER MDE MNDE INNER OUTER MDE MNDE INNER OUTER MDE MNDE MDE MNDE OUTER BEARING INNER BEARING Page : 1 / 6 AXIAL FAN ( AP TYPE ) CHECK LIST Project : Unit : Application : Fan Type : Speed : Product no : Attended by : Period : I. DURING OVERHAULING 1. SHAFT WITH BEARING ASSY. a) Bearing Designation & Condition Cy.Roller Brg. : New / Old Ang. Contact Ball Brg : New / Old b) Brg. ID & Shaft OD (in mm) Location FAN NO As per Drg ---- Angr cont Ball Brg area A Cy.Roller Brg ( DE ) area A Cy.Roller Brg( NDE ) area A Angr cont Ball Brg area B Cy.Roller Brg ( DE ) area B Cy.Roller Brg( NDE ) area B SHAFT OD Brg ID Brg OD c) Bearing clearance Location Asper design A-DE A-NDE B-DE B-NDE Before mounting After mounting(Except 11 Hub) Hsg ID Page : 2 / 6 d) Torque Tightening of Bolts Asper design : e) Brg. Face Out ( Except 11 hub ) f) Axial Float Asper design : Actual : 2. HUB MOUNTING a) Film Oil Pressure(Max.1200bar) : b) Nut Oil Pressure(Max.600bar) : c) Mounting Dimension Location Asper drawing Actual A-DE A-NDE B-DE B-NDE 3. BLADE BEARING ASSY. a) Tightness of lock nut, lock screw and lever bolts : b) Smooth operation of each blade shaft : c) Hyd. test of each blade shaft : (10 bar for 30min.,1 bar drop permissible) d) Depth of Shaft - imp. Hub Location DE NDE As per drawing Actual Minimum Actual Maximum Page : 3 / 6 e) Spring back ( Blade shaft ) Asper design : Actual : f) Lever condition : 4. SERVOMOTOR ASSY. a) Free rotation of control rod : b) Torque tightening of bolts : c) Oil leakage : d) Operation of servomotor : e) Stroke length As per Drg : Actual : 5. Control oil Flexible hose ID : 6. Blade condition : 7. Oil leakage after connecting the LOS to the servomotor and Brg. Assy : 8. Servomotor operating time with connecting to the LOS (<30sec) : 9. Actuator operating time without connecting to servomotor(>30sec) : 10. Servomotor stroke length after setting mechanical stopper(68/88mm) : 11. Actuator‘s position feed back signal(4mA for full close,20mA for full open) : 12. Compare with UCB readings(4mA for full close,20mA for full open) : Page : 4 / 6 13. BLADE & ROTOR CLEARANCE Bl. no STAGE 1 A OPEN STAGE 1 A CLOSED B C D E1 DE NDE DE NDE DE E2 DRIVE END NDE Tip Clear w r t Longest 01 blade no: 02 03 04 05 06 07 08 09 10 11 NON DRIVE END 12 13 Tip Clear w r t Longest 14 blade no: 15 16 17 18 19 20 21 22 23 NOTE:Clearance Clearance Clearance Clearance ( A1 ) - Drive side tip clearance. Clearance ( A2 ) - Non drive side tip clearance. ( B ) - Root clearance. Clearance ( C ) - Blade boss to hub cavity. ( D ) - Rotor to stator clearance. Clearance ( E1 ) - Impeller to Bullet clearance. ( E2 ) -Impeller to diffuser core clearance 14. COUPLING GAP Asper drg : Motor side : Imp. Side : 15. BLADE & ROTOR CLEARANCE 5/6 Bl. no STAGE 2 A OPEN STAGE 2 A CLOSED B C D E1 DE NDE DE NDE DE E2 DRIVE END NDE 01 Tip Clear w r t Longest 02 blade no: 03 04 05 06 07 08 09 10 11 NON DRIVE END 12 13 Tip Clear w r t Longest 14 blade no: 15 16 17 18 19 20 21 22 23 NOTE:Clearance Clearance Clearance Clearance ( A1 ) - Drive side tip clearance. Clearance ( A2 ) - Non drive side tip clearance. ( B ) - Root clearance. Clearance ( C ) - Blade boss to hub cavity. ( D ) - Rotor to stator clearance. Clearance ( E1 ) - Impeller to Bullet clearance. ( E2 ) -Impeller to diffuser core clearance 16. COUPLING GAP Asper drg : Motor side : Imp. Side : Page :6 / 6 17. COUPLING ALIGNMENT A1 A2 A1 00 A2 00 00 00 Motor side Imp.Side II.DURING TRIAL RUN 18. VIBRATION READINGS FAN DESCRIPTION LOCATION Horizontal (D/V) FAN -A Vertical (D/V) Axial (D/V) Horizontal (D/V) FAN -B Vertical (D/V) Axial (D/V) 19. BEARING TEMPERATURE: FAN DESCRIPTION FAN -A FAN -B LOCATION FDE FNDE MDE MNDE FDE FNDE MDE MNDE MDE MNDE DE BEARING NDE BEARING Page : 1 / 4 RADIAL FAN CHECK LIST Project : Unit : Application : Fan Type : Speed : Product no : Attended by : Period : 1. LPI Of Shaft Flange Welding & Conical Cover Plate Seating Ring Welding : 2. Tightness of rotor bolts with rated torque : 3. Zero gap between shaft flange and impeller center plate / back plate : 4. Zero gap between conical cover plate and impeller center plate / back plate : 5. Checking of wear plate thickness ( use template ) with D-meter : I. DURING OVERHAULING ( Replace wear plate if the thickness is less than 1/3 of original thickness ) 6. SHAFT LEVEL 7. Required : 0.04 mm/mtr Actual : BEARING CLEARANCE ( ANTI FRICTION BEARING ) Location As per Drg DE NDE Shaft OD Brg ID Brg clearance Brg OD Hsg ID Hsg -Brg outer race Brg-hsg cover gap Brg face out Page : 2 / 4 8. BEARING CLEARANCE ( SLEEVE BEARING ) AXIAL GAP BRGSIZE MIN SIDE CLEARANCE MAX MIN MAX OIL CLEARANCE MIN MAX AS PER DRG DE NDE 9. IMPELLER SEAL CLEARANCE ( A ) DE NDE As per Drawing 10. DE : NDE : IMPELLER SEAL OVER LAP ( B ) DE NDE As per Drawing 11. BACK PLATE CLEARANCE ( C ) DE : NDE : As per Drawing Page : 3 / 4 12. COUPLING ALIGNMENT A1 A2 00 R A1 00 A2 00 00 00 00 Motor side Fan side 14. COUPLING GAP Description Drive end Non drive end As per drawing Actual 14. Servicing Of IGV / Damper Brg. : 15. Smooth Operation Of IGV Damper : 16. Calibration Of IGV / Damper w.r.t Actuator : 17. Cleaning of filters ( Hyd. coupling & LOS ) : 18. Cleaning of cooler ( Hyd. coupling & LOS ) : 19. Cleaning of tank : 20. Hydro test of cooler ( Hyd. coupling & LOS ) : 21. General cleaning : 22. Lub oil pressure ( Hyd. coupling & LOS ) : 23. Oil test ( Replace oil if water contamination Exceeds 100 ppm ) : 24. Calibration of all instruments ( Thermometer, R Pressure gauge, Pressure switches etc : Page : 4 / 4 25. Scoop calibration (4 mA for 0% & 20 mA for 100%): 26. Greasing of connecting coupling ( SERVOGEM EP1 ) : II. 1. DURING TRIAL RUN VIBRATION READINGS Date : Time Scoop position : LOCATION FNDE FDE : Motor current : HCDE HCNDE MDE MNDE Horizontal (D/V) Vertical (D/V) Axial (D/V) 2. BEARING TEMPERATURE FDE FNDE MDE MNDE Hyd. coup working oil Working oil pr