6
Installation
10
B
A
1
5
9
3
7
2
4
8
Figure 2
Page 1: ...Marley Ultra Low Noise Fan User Manual 07 1126...
Page 2: ......
Page 3: ...3 Contents General Information 4 Installation 5 Operation 11 Maintenance 13 Parts List 16 Trouble Shooting 17...
Page 4: ...mbled unit correspond to a degree of G 6 3 in accordance with ISO 1940 1 In this case the blades have the same static moment so that they can be positioned in any order on the hub the blades of the sa...
Page 5: ...rmal direction of airflow as viewed from the discharge face of the rotor Installation Instructions 1 Remove blade pillow block and fasteners 4 5 6 7 15 from the hub disk one set a time Figure 2 2 If t...
Page 6: ...6 Installation 10B 10A 1 5 9 3 7 2 6 10 4 8 Figure 2...
Page 7: ...t into the drive shaft until it comes in contact with the drive shaft shoulder Drive the hub with cylindrical bore into the drive shaft until it comes in contact with the drive shaft shoulder or space...
Page 8: ...Rotate fan to check tip clearance is in accordance with the specified value tip clearance ratio x D where x the distance from the blade tip to the fan ring and D the rotor diameter The gap between bla...
Page 9: ...Figure 4 6 Repeat for each blade steps described in points 4 and 5 Before starting the pitch angle setting procedure turn the fan till the blade to be set is at the same point in the fan ring where p...
Page 10: ...ta tion part list Stainless steel bolts 15 with the A4 80 stamping Fan Diameter inches Bolt 15 Bolt Torque N m ft lb 84 to 96 M18 175 6 129 108 to 120 M20 246 2 181 132 to 144 M24 425 7 313 In the cas...
Page 11: ...irection of the blade rotation is cor rect see Rotation and Flow Direction Post Start Up 1 Check power absorption if excessive reduce the blade pitch angle until the desired power is achieved set the...
Page 12: ...12 Operation 3 After the rotor has been running for one hour check the torque of the hub screws 15 4 Repeat the check of screws 15 after 24 hours from start up Figure 5...
Page 13: ...Stop the unit completely before reversing the fan direction 6 Check the vibrations level in the position shown in Figure 5 at regular intervals The vibration level must not exceed the most restrictiv...
Page 14: ...esonance between one of the possible forcing frequencies of the fan and one or more of the vibration modes of the structure on which it is installed The main forcing frequencies generated by the fan n...
Page 15: ...bolts have to be tightened 11 The draining holes of the blades are obstructed they have to be opened The amplitude of the fan vibrations is determined by the rigidity of its support Vibration that wou...
Page 16: ...Steel R40 HDG 10 Coupling Flange Nut Steel 8 8 class HDG 10A Space Ring if needed Steel Zinc Plated 10B Taper Bushing if required Malleable Cast Iron Burnished 11 Coupling Flange Bolt Steel 8 8 class...
Page 17: ...17 Parts List 16 10B 10A 14 13 12 3 7 4 6 5 12 15 11 8 2 1 17 16 10 9 8 Figure 6...
Page 18: ...e design Decrease blade pitch angle till 3 after checking the data sheet selection Rubbing between the blades and the fan ring Screws and bolts of the fan and or the structure loosened Torque all scre...
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Page 20: ...RK KANSAS 66213 UNITED STATES 913 664 7400 spxcooling spx com spxcooling com In the interest of technological progress all products are subject to design and or material change without notice 2009 SPX...
