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Related Manuals for SPX Cooling Technologies MARLEY 07-1126
Summary of Contents for SPX Cooling Technologies MARLEY 07-1126
- Page 1 Marley Ultra Low-Noise Fan User Manual 07-1126...
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Page 3: Table Of Contents
Contents General Information ... 4 Installation ... 5 Operation ... 11 Maintenance ... 13 Parts List ... 16 Trouble Shooting ... 17... -
Page 4: General Information
General Information Description The Marley Ultra Low-Noise series of fans represent the top in the new generation of super low noise fans—the FRP blades have been developed to meet the most stringent noise limitations. The fans permit variable pitch adjustment at standstill and feature a simplified design. -
Page 5: Installation
Installation Rotation and Flow Direction The rotation direction is correct when the airflow moves from the convex back (suction surface) of the blade, to the concave side (pressure surface). Figure 1 shows the conventional clockwise di- rection of rotation and normal direction of airflow as viewed from the discharge face of the rotor. - Page 6 Installation Figure 2...
- Page 7 Warning Installation Torque hub assembly bolts 11 according to the following table: Fan Diameter Flange Type inches 84" to 96" Type 115 108" to 168" Type 190 3––Hub into driveshaft installation (Figure 2). • As for the hub with cylindrical bore, the hub is bored to attach directly to the drive shaft.
- Page 8 Caution Warning Installation The drive shaft end must remain recessed at least bore to prevent dangerous rotor vertical translation once retaining bolt 16 has been tightened to the shaft end. Never power the drive shaft with bushing bolts not torqued or bushing improperly positioned.
- Page 9 Figure 3 Figure 4 Installation Rotate the blade on its axis until the required pitch angle is ob- tained. Check there is no gap between each blade shaft shoulder and cor- responding pillow block. Torque pillow block bolts 15 according to the following tables, complying with bolt orientation and tightening order as shown in Figure 4.
- Page 10 Note Note Installation Fan Diameter Bolt 15 inches 84" to 96" 108" to 120" 132" to 144" The screw class information is shown in the fan documenta- tion part list. Stainless steel bolts 15 with the A4-80 stamping: Fan Diameter Bolt 15 inches 84"...
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Page 11: Operation
Operation Prior to Start-Up 1––Make sure all the pillow blocks are fixed to the hub boss—if any movement of the blocks is detected, do not operate the fan and check the torque of bolts 15. 2––Rotate fan to check tip clearance is in accordance with the speci- fied value (tip clearance ratio x/D, where x = the distance from the blade tip to the fan ring and D = the rotor diameter). - Page 12 Figure 5 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.
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Page 13: Maintenance
Maintenance Maintenance and Operation 1––Inspect the overall fan condition periodically. Inspection intervals depend on fan operating conditions and may vary from a minimum of 2 weeks to a maximum of 6 months. The following components should be specifically inspected when inspecting the overall fan conditions: - Screw torque. - Page 14 Maintenance Possible Causes of Vibration The actual causes of vibration may change considerably. Some of the most common are as follows. 1–– Unbalance of one or more blades: the vibration caused by blade imbalance occurs on the tip path plane with a frequency equal to the fan RPM and at an amplitude which is dependent on the degree of imbalance and the square of the rotational speed.
- Page 15 Maintenance 9––Worn output shaft bearing: this condition generates vibration on the tip path plane at a frequency equal to the rotor RPM. 10––The fan and/of the structure bolts are not tightened: in this case all the bolts have to be tightened. 11––The draining holes of the blades are obstructed: they have to be opened.
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Page 16: Parts List
Note Parts List Item Description Figure 6 Blade Coupling Flange Hub Disk Lower Pillow Block Upper Pillow Block Pillow Block Plate Pins Coupling Flange Washer Coupling Flange Lock Washer Coupling Flange Nut Space Ring (if needed) Taper Bushing (if required) Coupling Flange Bolt Pillow Block Washer Pillow Block Lock Washer... - Page 17 Figure 6 Parts List 17 16...
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Page 18: Troubleshooting
Troubleshooting Trouble Cause System congestion. Obstacles to the air flow. Low air flow Static pressure higher than the specified Low power absorption one. Pitch angle lowered by blade rotation (e.g. screw (15) not tightened at the right torque). Temperature higher than the design. Temperature lower than the design. - Page 20 7401 WEST 129 STREET OVERLAND PARK, KANSAS 66213 UNITED STATES 913 664 7400 spxcooling@spx.com In the interest of technological progress, all products are subject to design and/or material change without notice. ©2009 SPX Cooling Technologies, Inc. | Printed in USA M07-1126...