Marley MW Cooling Tower Fan User Manual
Contents
1. In the interest of technological progress all products are subject to design and or material change without notice 2010 SPX Cooling Technologies Inc Printed in USA Manual 01 1264A2. Marley MW Fan User Manual 01 1264A Marley Caution Caution Installation Bushing Installation 1 Using clean dry cloth remove any dirt lubricant or sediment from the bore the bushing taper and the tapered fan hub Do not use any lubricant or thread locking compound dur ing installation The use of such products will cause improper bolt torque and will crack the fan hub 2 51 the bushing into the tapered bore of the fan hub Do not press the brushing into place 3 Place the brushing bolts through the untapped holes of the brushing into the threaded holes of the hub 3a lf there are untapped holes in the hub the bolts can be placed through the untapped holes of the hub into the threaded bushing holes 4 Tighten the bushing bolts by hand to hold the bushing loosely in the hub Fan Installation 1 Slide the bushing and fan assembly onto the shaft 2 Insert the key into the keyway Some bushings are manufactured with a shallow keyway If a key is included in the bushing package use the key supplied by the bushing manufacturer 3 Using a torque wrench tighten the bushing bolts evenly one half turn until the proper installation torque is achieved Proper installation torque is listed on the bushing bolt torque chart 4 Continue tightening until all bolts are at recommended torque Do not exceed the torque specification listed on the bushing bolt torque chart Exceeding
3. the recommended torque will crack the fan hub Bushing Bolt Thread Torque JA 10 24 5 G 74 20 6 H 74 20 6 SH 74 20 8 SD 74 20 9 SDS 14 20 9 1 18 13 SK He 18 15 SF 16 23 Q1 16 29 1 16 29 Installation Blade Pitch Adjustment 1 Obtain 21 sets of nuts and bolts to replace existing nuts and bolts 12 sets for the outer bolt circle and bolts between the blades and 9 bolts for the boss section 2 Remove and replace all the bolts and nuts Do not tighten the bolts yet 3 Adjust the blade by hand or lightly tap the blade with a rubber mallet to set the approximate position 4 Measure the blade pitch angle With amachinist s combination square measure the distance from the hub flat area between the blade socket to the top of the blade s trailing edge at the highest position Note that the blade s trailing edge is the thinner edge Measure this Dimension Pitch Angle Distance From Hub To The Top Of Blade inches 25 3 31 30 3 71 35 4 06 40 4 46 45 4 73 50 5 08 Distance for pitch angles not listed in this table can be obtained Note through interpolation 5 Tighten nuts and bolts to 15 foot pounds of torque stainless bolts 5 COOLING TECHNOLOGIES 7401 WEST 129 STREET OVERLAND PARK KANSAS 66213 UNITED STATES 913 664 7400 spxcooling spx com spxcooling com
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