SPX Cooling Technologies HP7000 User's Manual
Contents
1. Marley HP7000 Fan Clamped Blade Shank 192 thru 240 User Manual 01 1139A Cooling Technologies Balcke Hamon Dry Cooling Marley Fan Components 150 ft lbf 204 N m SEE FIG 6 FOR DETAILS 101 123 HUB ASSEMBLY 15 Ftlbg 20 Nem IDENTIFICATION NUMBER OUTBOARD ROW NOT REQD ON 30 DIA HUB ASSEMBLY 38 120 Ft lb 163 N m 100 Hub Figure 1 Typical Fan Assembly 101 Hub Center actual component appearance may vary 102 Hub Plate 110 Kit Blade Clamp 111 Blade Clamp 120 Kit Center Hub Hardware 121 Cap Screw 122 Flat Washer 123 Pin 130 Kit Blade Clamp Hardware 131 Machine Bolt 34 132 Flat Washer 34 133 Locking Hex Nut 3 4 or Hex Nut 34 and Lock Washer 3 4 134 Thread Lubricant 140 Kit Hub Cover Hardware 141 Machine Bolt 142 Flat Washer 143 Lock Washer 144 Hex Nut Order No 145 Locking Hex Nut 3 Trial Pitch Angle 146 Spacer f 150 Kit Balance Hardware Final Pitch Angle 160 Manual Speed rpm 200 Blade 300 Hub Cover Contract hp Figure 2 Fan Hub Installation The following instructions detail the process for installing a Marley HP7000 Fan on a Marley Geareducer with a tapered fan output shaft and bolted fan hub retention Installation on other gear reduc tion units may be different Contact your Marley sales representative for supplemental instructions if required 1 Remove the retention plate and hardware from t2. all products are subject to design and or material change without notice 2005 SPX Cooling Technologies Inc Printed in USA
3. cal variation from a reference plane is 1 25mm If a blade s tip track is out of tolerance loosen the 34 hardware and change the blade tip support location higher or lower as required to adjust the tip track Recheck blade pitch angle Figure 7 Hub Cover Installation Install the hub cover as shown in Figure 1 and Figure 7 Tighten all hex nuts to 15 ft lb 20 N m torque Fan Maintenance Preventative maintenance will prolong useful life and assure con tinued trouble free operation After the first week and subsequently at six month intervals e Torque all hardware to specifications referenced in this manual e Visually inspect the fan for airborne debris damage contact with fan cylinder segments and corrosive attack Correct any situations determined detrimental to fan operation e Remove any accumulated scale or dirt e Clear blade drain holes Service Proper identification of your fan is necessary to insure you receive correct replacement parts The Marley cooling tower serial number can be used to determine the fan and any components installed and maintained as original equipment on a Marley cooling tower The fan diameter and moment weight class from the blade nameplate see Figure 3 is required to identify blades for replacement The fan hub gt 7 assembly identification number see Figure 1 is required to identify a replacement hub assembly or repair components Please provide the Marley sales repr
4. esentative the necessary information when ordering replacement fans or components Blades can be replaced without rebalancing the entire fan If rebalancing is desired contact the Marley sales representative in your area Motor Load The corrected horsepower should be close to but not exceed the contract horsepower specified Determine corrected horsepower using the following equation VOLTS x AMPS x DENSI HPc TYp x HPN HPco Corrected Horse DENSITY Actual Air Density power VOLTSn Nameplate Volts VOLTS Actual Volts AMPSy Nameplate Amperage AMPS Actual Amperage HPN Nameplate Horsepower Actual volts and amperage must be obtained with the fan running and the specified rate of water flowing over the tower after the motor and Geareducer have reached operating temperature approximately 30 minutes of operation Measurements taken on motors operating with Variable Fre Note quency Drive controls may read up to 15 high from errors in measuring the approximated sine wave Instruments capable of measuring a squared off wave form accurately should be used for measuring power in this situation Do not exceed 30 sec hour total motor starting time as motor may overheat SPX Cooling Technologies Balcke Hamon Dry Cooling Marley 7401 W 129 Street Overland Park KS USA 66213 1 913 664 7400 spxcooling ct spx com www spxcooling com In the interest of technological progress
5. he top of the Geareducer shaft Thoroughly clean the fan shaft fan shaft key and the fan hub center bore to remove any debris and or protective coatings After cleaning apply a coat of anti seize compound to the top 5 130mm of the fan shaft 2 Prior to hub installation fully seat the key in the fan shaft keyway The key is a tight fit across the width and must never be altered 3 Raise the fan hub above the fan shaft for installation Slowly lower the hub onto the shaft with the keyways properly aligned Make cer tain the key does not slide down during installation Stake the key in the keyway with a center punch if necessary The fan shaft key should be approximately centered in the engaged portion of the hub when engaged on the shaft Verify the center hub is fully seated by visual inspection 4 The hub retention plate will sit on top of the spool Discard the retention bolts that come with the Geareducer New retention bolts are provided with the hub cover hardware kit Torque bolts to 50 ft lb 68 N m gt lt 2 7 Ari a Fan Blade Installation Marley HP7000 fan blades are manufactured to equal moment weight and blade clamps to equal static weight The blades and clamps can be installed in any position without affecting fan balance At the end of the blade shank on a nameplate is inscribed a let Note ter code i e A or B etc When installing or replacing blades use only blade
6. s with the same letter code Marley HP7000 Fan BLADE SIZE ME MOMENT WEIGHT CLASS pE SERIAL NUMBER M For Additional Information Refer to HP7000 Manual Figure 3 Blade Nameplate 1 Lubricate the 3 4 bolt and 34 hex nut threads with thread lubricant Set the hardware aside Figure 4 Figure 5 2 Remove one set of blade clamps from the hub assembly Blade clamps are installed on the hub assembly at the factory with spacers for shipping purposes Remove and discard the spacers Position the blade clamps around the shank of a blade with the machined face end of the blade clamp against the blade safety shoulder See Figure 5 Large nylon cable ties can be used to hold blade clamps on the blade during installation providing easier assembly 3 Insert the blade with blade clamps around the shank and with LOCKING HEX NUT OR HEX NUT AND LOCK WASHER FLAT WASHER BLADE CLAMP HUB PLATE oo HUB PLATE ee WASHER FAN BLADE MACHINE BOLT the concave blade side TOP on the discharge side between the hub assembly plates as shown in Figure 4 Vertically align the two bolt holes in the clamps and plates Install two lubricated 4 bolts four 3 4 flat washers two 3 4 lock washers if hardware ma terial is monel and two 3 4 hex nuts engaging the nuts only three to four threads as shown in Figure 5 Do not tighten the hardware until all the blades have been installed The blade m
7. ust be free to rotate in the clamp for pitch adjustment 4 Repeat until all blades clamps and hardware have been installed in the hub assembly Note Figure 6 Adjusting Fan Blade Pitch The trial pitch is the calculated setting for design conditions water rate heat load air density and brake horsepower The trial pitch is provided by SPX Cooling Technologies see page 2 _ BLADE __ STRAIGHT _ BEVEL TIP EDGE PROTRACTOR BITCH ANGLE Section 1 Select a position on the fan circumference and rotate each blade to this common location when setting or checking blade pitch Sup port the blade tip to maintain a common rotation plane while setting the fan pitch The pitch is set within 2 51mm of the blade tip by placing a bevel protractor on top of a parallel sided straight edge that extends across blade width as shown in Figure 6 2 Pull the blade outward so the safety shoulder is in contact with the blade clamp then set the pitch See Figure 5 Blades should be within 1 4 of the desired pitch angle After the de sired setting is obtained progressively tighten the 34 hex nuts to 120 ft lb 163 N m torque Recheck the pitch angle If required loosen the hex nuts and reset the pitch as necessary until the proper pitch angle is obtained with the 34 hex nuts at 120 ft lb 163 N m torque 3 Repeat step 2 for all blades 4 Check the vertical blade tip track variation The allowable verti
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