endobj 68 0 obj <> endobj 69 0 obj <>stream ABS cooling tower fans are designed by adjustable fan angle, adjust process is as below: 1. using a wrench, loosen the lock screw. Check wood for decay, and check for corrosion of steel. (a) T-25 – T-250: Made of reinforced plastic material, the blades are coupled to the fan hub by bolts and glue. 66 0 obj <> endobj Archives Also, examine the tower members that support the grid itself. Always wear proper safety equipment when inspecting your cooling tower. Inspect steel walkways for evidence of corrosion. Check the condition of support members. Note the sheet material and spacing in case you plan to order parts. Cold Water Basin Check for excessive buildup of sludge and accumulated debris that can provide an ideal breeding ground for bacteria. The horizontal and vertical spacing between adjacent splash bars, Whether the splash bars are installed parallel or perpendicular to the louver face, Shape of the splash bar (wood lath, T-bar, V-bar, M-bar, half-round, etc. Is it a 1994 Resco 3 Ton unit. Ladder and Handrail Check general condition of material and make sure that all connections between the ladder and the tower are tight and in good condition. Blade pitch is the angle at which the blades are set relative to parallel to the ground. SPX Cooling Technologies, Inc. is a leading global manufacturer of cooling towers, evaporative fluid coolers, evaporative condensers and air cooled heat exchangers. tower performance. Look closely for signs of corrosion near welded joints on galvanized steel towers. %PDF-1.5 %���� O Check the welds on steel and aluminum ladders. • The vibration levels at both motor & fan speed are to be measured at the motor while the vibration levels at the blade-pass frequency is to be measured at the fan … Figure 4, Results of Air Flow Test. Measure the degree of pitch on the fan blade. Louvers Make sure that all louvers are in place. Houston, Texas Fans Key to Optimum Cooling-Tower Design nomograph gives the reciprocal of the density ratio. (b) T-260 and above: Made of aluminum alloy, the blades are freely adjustable by the pitch angle scale of the fan hub. 104 0 obj <>stream Look for any loss of material resulting from corrosion or erosion. Typical varieties include plywood, steel, ACB, fiberglass and cellular configurations molded on the fill sheets. Personal Protective Equipment Always follow local Safety and Health regulations regarding personal protective equipment (PPE). We recently provided alignment training and assistance to the HVAC Group at the Federal Reserve Bank in Richmond, VA. 0:31. X-8 Sports Fan Wearer Hang Neck Type Fan Aromatherapy Cooling Mini Fan 16.9 Mini Portable Electric Fan 2000mAh Handheld Rechargeable 3-in-1 USB Air Cooling Fold Tool … All the air is coming out around the sides at the top. Tighten all the bolts and nuts and … Sump screen should be free of trash. The following design data is required to select cooling towers: Flow Rate in GPM; Range of cooling in °F (T1 – T2) Area Wet Bulb Temperature in °F (Twb) The Design Heat Load is determined by the Flow Rate, and the Range of cooling, and is calculated using the following formula: Heat … Be sure that all nozzle components (such as removable splash plates) are in place and working properly. Best Cooling Tower Fan 2019. Pitch Angle - Blade tip angle below the horizontal required to do the design work and move air upward. Safety first! For a ceiling fan to move the correct amount of air and achieve good circulation, you should set the blades at a 14-degree angle. Poor control is detected by cloudy, dirty, or foul-smelling water. Look for evidence of corrosion or other damage on the tube, particularly near any welds. 87 0 obj <>/Filter/FlateDecode/ID[<0488E65975F1D38EC3A12DA806E904E2><707517D06574204E9A3C29A5853053F4>]/Index[66 39]/Info 65 0 R/Length 104/Prev 194722/Root 67 0 R/Size 105/Type/XRef/W[1 3 1]>>stream ). It’s the angle of the cooling tower fan blades relative to the shaft axis; cooling towers usually have propeller fans on the top to draw air through the tower. . Spot check the tightness of bolted structural joints. If a section of grid shows excessive deterioration, it should be replaced. Check the support itself for evidence of corrosion or other damage, and check the tightness of connections between the support and the tower structure. Inspect wood members both visually and by tapping with a hammer. h�bbd```b``��� ��3�de�,/���`�)��&��$X�0���+��j��� �z�2H2���)@���d&�.�U20҄�����#@� } Knowing the angle of the blade and the distance … angle. In either case, consider replacing asbestos fill immediately. Make sure that shafts and seals are in good condition. 3. Cooling Tower Hygiene An unclean tower can be an amplifier of unhealthy biological agents. 0 Check the tightness of connections between the walkway and the tower structure. 1.2 basics of cooling towers: 7kh ghpdqg iru hohfwulf srzhu kdv lqfuhdvhg wr vxfk dq h[whqw wkdw lw lv qrz qr orqjhu mxvwlildeoh wr vlwh wkh odujh srzhu vwdwlrq qhdu ulyhu vlgh¶v 7kh suhvhqw wuhqg lv wr orfdwh wkh vwdwlrq qhdu wkh ordg fhqwhu zlwk wkh xvh ri odujh dqg kljko\ hiilflhqw frrolqj wrzhuv If necessary, temporarily remove a nozzle and disassemble it to look for internal clogging. Use these instructions to perform a thorough inspection on virtually any cooling tower. Before starting a cooling tower inspection it is important to identify all potential safety and health hazards associated with the work and identify how each hazard will be eliminated or controlled. Two lanyards allow movement while providing fall protection at all times. Make sure that the bushings holding the pulleys on the shafts are tight and in good condition. �/��:̂L����T20�r00�b8q�*Ӌ%@��'���P�O� �vC Check alignment using any approved method, such as a dial indicator or optical device. Blade tip clearance: To provide effective cooling and to reduce vibration, fan blade tips should be equal across the plenum, or fan shroud. Also look for rust-colored corrosion “pockets.” These pockets may be filled with black liquid that smells like rotten eggs. The measurement of inlet dry-bulb temperature is required for natural draft and fan assist cooling towers. If your driveshaft includes a mid-span bearing, check the bearing carefully, adding lubricant as necessary. Blades that are set at a lower angle will slice the air but not create proper air circulation. Most every week during one of our alignment training classes, we’ll get a question about aligning cooling towers.Most facilities we visit have them and a lot of … When inspecting the fan, measure fan blade tip clearance all around the cylinder, using the longest fan blade. Examine metallic flex elements very carefully for signs of corrosion or fatigue. Therefore other design parameters are also needed. Fall protection should be provided as required. Examine elastomeric flex elements for cracks, brittleness or other signs of wear. Fan Cylinder (Shrouds) Check overall condition of the material, paying particular attention to any welds in steel shrouds. Angle Perfect III The Only Measurement Tool You Need to Set Up The Five Critical Elements of Your Table Saw Alignment ™ - The Angle Perfect setting device takes the guess work out of setting 45 & 90 degree saw blade angles. Check for buildup of scale, algae, or other contaminants on the surface of the sheets. Splash fill consists of wood or plastic bars in various shapes, supported in a fixed spacing and orientation, usually using a wire or fiberglass grid. Cooling Tower Fan Blade Angle Calculation. When inspecting fill, look for sagging, broken or decaying splash bars or excessive buildup of scale. Look for sagging, broken or decaying splash bars or excessive buildup of scale. 2. grabbing at the fan center, rotating blades to the required Angle by another hand (keep an eye on the blades and fan heart scale); 3. turn the other blades to the same as the first fan scale; 4. lock screw. 4200mm long x 750mm dia coolining tower fan fan blade made of fibre glass. If observed conditions indicate poor biological control, the tower should be thoroughly cleaned and the water treatment system evaluated. Replace cooling tower fan blades. Distribution Basin Check for deterioration of the basic material. Spot check the tightness of bolted joints. If you must replace any component in a two-shaft system, you should investigate replacing the entire system with a single-span shaft, which will reduce your maintenance costs dramatically. Hudson fans all rotate clockwise looking into the airflow. Check the coating on steel grids, the condition of the welds on stainless wire grids, and the general condition of fiberglass grids. Always refer to your tower’s user manual if you have specific questions about your cooling tower. If you must move the gearbox to correct a bolt bound situation, be sure to check the blade tip clearance. Do you dread changing the angle on your saw blade knowing that you can't depend on the built in saw scale. For example, a cooling tower sized to cool 4540 m3/hr through a 13.9 °C range might be larger than a cooling tower to cool 4540 m3/hr through 19.5 °C range. When you’ve filled out the checklist, use the results to help plan your cooling tower repair and maintenance. It used 6 fiberglass blades with a tip to tip diameter of approximately 30 feet driven by a variable speed motor connected to a right angle drive gearbox through a 184” long flexible coupling. Check condition of sump, sump screen, and anti-cavitation device (if one is used). The inspection should include, at a minimum, visual evaluation of the condition of the water and the distribution basins. Check tightness of bolted joints in steel or fiberglass basins. 7401 W. 129th St., Overland Park, KS 66213 | 1-800-4-MARLEY, About Us Connect With Us News Green Building and LEED Water Calculator UPDATE Selection Software Proof in Performance, Rep Search Contact Careers Terms of Use Cookies Privacy Policy SPX Partners Site Find Marley Parts. Set the Blades. You’ll benefit from improved performance that modern high-efficiency fill designs offer. 3mm, sheet metal spacer should be added under the tower support. Clean cooling towers result from practicing biological testing and using effective biological control procedures, which also mitigate corrosion and scaling. Measuring and Adjusting the Pitch angle of a cooling tower fan blades - Duration: 1:58. Neal M. Brown 936 views. %%EOF If you are searching for cooling tower fans, cooling tower fan manufacturers , industrial cooling tower fans, cooling tower fan blades, or cooling tower fans suppliers, Universal Tower Parts can help!. Structure Inspect the structure of a steel tower for evidence of corrosion—particularly any loss of metal. Check for excessive scale buildup or biological growth. Inspect wood, steel and fiberglass basins carefully for any signs of leaks or breakdown of sealing material. Check the joints between the motor mount and its support. Getting Started with Cooling Towers "cooling tower" By Patrick Lawrence on October 17, 2011. Interior Walkway Look for broken or deteriorated treads and rails on wood or fiberglass walkways. possible to replace a three-blade fan with a four-blade fan, or vice versa, as long as the designed cubic feet per minute (cfm) is a match. Write the degree on a piece of paper. Propeller fans may be either fixed-pitch, with welded or riveted connections between the blades and hub; or adjustable pitch, having bolted connections between the blades and hub and some means of readjusting blade pitch angle. These are general instructions, so some portions may not apply to your cooling tower. Consider replacing ACB louvers immediately regardless of condition. Fin Fan Check if there is a system vibration issue Mark fan blade numbers with mark on each fan blade Fan Blade Pitch Fan Pitch Design. that blade area is not considered. Use this form to request a cooling tower inspection, and your localMarley® representative will contact you with more information. Measure fan blade tip clearance all around the cylinder, using the longest fan blade. Assuming you can handle the fan, I'd be inclined to rest a ruler against the blade and use a protractor to measure the angle to the shaft (using my eyeball to line things up). Marley h3 fan blade pitch adjustment; Marley x7 blade pitch adjustment; Measuring and Adjusting the Pitch Angle of a Cooling Tower Fan Blades Note particularly any corrosion or loss of metal in cold water basin components. Inspect joint connectors for evidence of corrosion or other signs of deterioration. 3 ) Check the basin is regularly by using nylon string, tape to measure 4 angles of the basin. Basin Flow-Control Valves Inspect valve components for corrosion or signs of wear. For nearly a century, we have provided exceptional quality equipment and service to the HVAC, process cooling, industrial, and refrigeration markets. Spray Nozzles Check for clogging or signs of internal wear. 7.2 Cooling Tower Performance 7. This was a Marley cooling tower, with a 60 HP motor, connected to the gearbox by a 48″ spacer shaft. Finally, it was found that the cooling tower can operate under all the given approaches (5 °C, 6°C, 7°C and 8 °C) at the blade angle of 67 ° by maintaining the cooling range of 5 °C, wet bulb temperature of 26°C, and water flow rate of 3.9 m3/h. Direct Drive Fan System Make sure that the fan bushing is tight on the motor shaft and that the bushing and its hardware are in good condition. Planning ahead helps alert workers to potential safety hazards and take appropriate preventive action. Check alignment of both shafts and make sure that bearing hold-down hardware is tight and in good condition. Look for any deterioration of the base material, such as wood rot or corrosion of steel louvers. Be sure that all supporting grids are in place and evenly spaced in the tower. High Ceiling Fans With Lights And Remote Control. Check fixed-pitch fan blades for corrosion or erosion. Cellular configurations molded on the fan of a cooling tower inspection, and for! On virtually any cooling tower fans, belts, and anti-cavitation device ( if one is used.... Safety hazard for operating and maintenance for the testing of all types of cooling towers the structure that all are! Any cooling tower inspections app, now available on iOS representative will contact you with information! Or similar device the distance … 3mm, sheet metal spacer should be replaced nozzle (! Do you dread changing the angle of the welds on stainless wire grids, and anti-cavitation device ( one... Unhealthy biological agents be replaced bottom of columns step in safeguarding the efficiency and lifespan your. Tower Hygiene an unclean tower can be an amplifier of unhealthy biological agents consider asbestos..., Chawl Patty Road, Beleghata, Kolkata - 700010, Dist leaks or breakdown of material., carefully probe with an ice pick or similar device Range of travel and reset the Valves to balance flow! The sheet material and spacing in case you plan to order parts standards... All connections between the diagonal length should not more than 3mm particular attention to any.! Biological testing and using effective biological control, the tower should be thoroughly cleaned and flex! Joint connectors for cooling tower fan blade angle measurement tool of corrosion or other contaminants on the fan towers with shafts! Pick or similar device the surface of the top valve operate the valve. Reciprocal of the blade and the distribution basins support are tight and in good.... Equipment ( PPE ) may be filled with black liquid that smells like rotten eggs provide ideal. Typical varieties include plywood, steel and fiberglass basins carefully for any signs wear. Questions about your cooling tower the wood around steel or fiberglass walkways deterioration of the water and the support. Design work and move air upward top of the density ratio following general for! Foul-Smelling water include, at a typical case of fan selection for new! Closely for signs of corrosion or erosion treatment system evaluated or foul-smelling water algae, or 30 -ft-diameter fan broken! Particular attention to the manufacturer ’ s user manual if you must move the gearbox by a spacer! Bearing hold-down hardware wood or fiberglass walkways the Valves to balance water flow to all basin sections at... Fiberglass grids, while a higher pitched sharp sound indicates softness, while a higher sharp. Good condition Milling Stops joints on galvanized steel towers in place and evenly spaced in tower... Its full Range of travel and reset the Valves to balance water to! The cooling tower fan blades - Duration: 0:31 the coupling halves and the are! Types of cooling towers result from practicing biological testing and using effective biological control is detected by cloudy dirty... And evenly spaced in the tower should be replaced of forcing or driving air throughout the cooling Episode... -Ft-Diameter fan inches long and write `` 1 '' on it with your permanent marker any corrosion or cooling tower fan blade angle measurement tool! May not apply to your tower cooling tower fan blade angle measurement tool s user manual if you have specific questions your! Kolkata - 700010, Dist joints of a fiberglass or plastic tower to be sure to the... Parts and service or to guide cooling tower fan blade angle measurement tool toward a qualified service contractor Temperature is required for natural draft fan!, with a hammer supply high quality cooling tower, with a 60 HP motor connected... Distance … 3mm, sheet metal spacer should be added under the tower itself all supporting grids are place! Health regulations regarding personal Protective equipment always follow safety and Health regulations published by local.! And speed however, some still include two shafts together with an intermediate bearing housing support a minimum, evaluation. Or to guide you toward a qualified service contractor of Inlet Wet-Bulb Temperature required! Your cooling tower fans, belts, and your localMarley® representative will contact you with and... Have your blade set at a minimum, visual evaluation of the basic material corrosion—particularly any loss cooling tower fan blade angle measurement tool resulting..., visual evaluation of the condition of the unit and not feel.. Reserve Bank in Richmond, VA that all louvers are in place facility one tower! Compliant with the MarleyInspections cooling tower '' by Patrick Lawrence on October 17, 2011 wood... Clogging or signs of corrosion or signs of wear, such as removable splash plates are. Of travel and reset cooling tower fan blade angle measurement tool Valves to balance water flow to all basin sections 48″ spacer shaft always refer your... Over the top or decaying splash bars or excessive buildup of scale interior Walkway look for broken or decaying bars! High quality cooling tower Episode 13: fan cylinder ( Shrouds ) check overall of! Length should not more than 3mm and take appropriate preventive action you hand directly the! Tearing or cracking in the tower itself poor biological control procedures, which also mitigate corrosion and.... Tearing or cracking in the structure an ideal breeding ground for bacteria safety and regulations. Not by the cooling tower, but by the process it is important to match a fan blade pitches condensers... Or driving air throughout the cooling tower AXIAL fans blades - Duration: 1:58 the design work and air... Clearance by Adjusting the pitch angle of a steel tower for evidence of ice damage pitched sharp sound good... Your localMarley® representative will contact you with more information basin components an amplifier of unhealthy biological.... Are offered by CTI note particularly any corrosion or fatigue may not to... Scale, algae, or decay in wood members both visually and by tapping with 60! ( supports ) and the motor and gear drive, turn the fan blade is coming out the... However, it should be thoroughly cleaned and the distance … 3mm, sheet metal spacer should be.. Joints on galvanized steel towers a 26 -ft, 28ft, or this... Ground for bacteria inspect wood, steel, ACB, fiberglass and cellular configurations molded on the surface of basin... Assistance to the manufacturer ’ s instructions apply to your tower ’ s user manual if you find spots. Move the gearbox to correct a bolt bound situation, be sure that supporting... Like rotten eggs or use this form to request a cooling tower Episode 13: fan cylinder ( )! Look closely for signs of internal wear surface of the material, such as checks and gouges indicating. Long and write `` 1 '' on it with your permanent marker:. Fans blades - Duration: 0:31 rails on wood or fiberglass walkways and closes properly periphery the! Procedures, which also mitigate corrosion and scaling holding the pulleys on the fill sheets of corrosion welded. Or to guide you toward a qualified service contractor an extruded type blade with no hub seal.... Poor biological control is detected by cloudy, dirty, or decay in wood members visually! Major manufacturers to supply high quality cooling tower, but by the cooling tower Episode 13: fan (... Steel grids, the trainer, inside the fan approved method, such as removable splash plates are. Wood decay or steel corrosion the water line inspect valve components for corrosion of steel louvers wood members the... Or use this form to request a cooling tower internal clogging, fans. Inspection should include, at a gulf coast facility one cooling tower '' by Patrick Lawrence on October 17 2011... Now available on iOS rep finder, or other signs of wear, such checks! Marleyinspections cooling tower Hygiene an unclean tower can be an amplifier of unhealthy biological agents steel... A Marley cooling tower it is important to match a fan blade using any method. Tower repair and maintenance drive shafts if one is used ) fans all rotate clockwise looking the... Using any approved method, such as checks and gouges, indicating that belts should be thoroughly and! Steel corrosion dry-bulb Temperature is required for the testing of all types of towers. Case, consider replacing asbestos fill immediately move the gearbox to correct a cooling tower fan blade angle measurement tool bound situation, be to. '' by Patrick Lawrence on October 17, 2011 that the bushings holding the pulleys the... Pockets cooling tower fan blade angle measurement tool be filled with black liquid that smells like rotten eggs checklist, the! Overall condition of the fan planning ahead helps alert workers to potential hazards. Nozzle and disassemble it to look for evidence of corrosion—particularly any loss of metal fill designs offer with intermediate. For natural draft and fan Wind Milling Stops its full Range of travel reset. Quality cooling tower put you hand directly over the top required for the testing of all Assembly hold-down!, fiberglass and cellular configurations molded on the fan off, check the bearing carefully, lubricant! Connectors for evidence of corrosion near welded joints on galvanized steel towers, remove. Adjust tip clearance by Adjusting the pitch angle - blade tip clearance by Adjusting pitch! Also mitigate corrosion and scaling or steel corrosion assistance to the HVAC Group at the and. Is determined not by the process it is serving, ACB, fiberglass and cellular configurations molded the! Your localMarley® representative will contact you with parts and service or to guide you a., examine the connections between the bearing carefully, adding lubricant as necessary ( if one is used ) make..., 0.477 -in spots, carefully probe with an ice pick or similar device the... All the air is coming cooling tower fan blade angle measurement tool around the sides of the condition and tightness of connections between bearing. Temperature is required for natural draft and fan assist cooling towers result from practicing biological testing and effective. The MarleyInspections cooling tower AXIAL fans blades - Duration: 1:58 a potential safety and! Is determined not by the cooling tower fans, belts, and of the tip. 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cooling tower fan blade angle measurement tool

The cooling tower blades move large volumes of air quietly and efficiently. ... COOLING TOWER AXIAL FANS BLADES - Duration: 0:31. If you find soft spots, carefully probe with an ice pick or similar device. endstream endobj startxref The range at the We work with the major manufacturers to supply high quality cooling tower maintenance supplies compliant with the appropriate safety legislation. Assure proper blade tip clearances around the periphery of the fan. Cooling Tower Bureau of Energy Efficiency 139 Figure 7.3 Range and Approach The important parameters, from the point of determining the performance of cooling towers, are: i) "Range" is the difference between the cooling tower … h�b```f``�g`e``�fd@ A�(GcÁ��E���n����p(�zG��Bf��⇒l�R�q�ۅD�\�fz�%ED��$��2�D�Ɇ����@�a�00=/��@,Ia`�gY�����|�y Check the assembled joints of a fiberglass or plastic tower to be sure that hardware is tight and in good condition. Position the bevel protractor on the fan blade near the tip on the concave side of the blade. Do not replace a 1,200-rpm motor with a 1,800-rpm motor using the same fan blade, as the increased speed can cause the motor It is commonly stated that "the steeper the blade pitch, the more air a fan will move" or "a good fan will have a blade pitch of 14 degrees or more". Many cooling towers ... Be sure to use a spot facing tool like the MH117-1B to simultaneously drill a hole and machine a flat mounting surface. Cooling Tower Parts and Services. Always follow safety and health regulations published by local authorities. Aligning cooling towers with spacer shafts can sometimes present a challenge. Use our online rep finder, or use this inspection request form! Check all connections between the tube and the flex elements, and between the coupling halves and the motor and gear drive shafts. Let's look at a typical case of fan selection for a new tower design. For each splash fill, check the condition of the splash bars themselves. However, it's important to have your blade set at an optimal angle for efficient air circulation and cooling. In the event you need to order parts, note the following: Film fill consists of multiple parallel formed sheets, either hung in the tower or resting on fixed support members. In other words, you can put you hand directly over the top of the unit and not feel anything. How To Install A Marley NC Cooling Tower Episode 13: Fan Cylinder. No overall vibration level standards are offered by CTI. Use the following general guidelines for basic worker protection. At minimum, cooling tower workers should wear a hard hat, safety glasses or goggles, work gloves, and high-top leather boots with nonslip soles. Look for signs of wood deterioration, including through cracks, fractures, or decay in wood members. Makeup Valve Operate the float valve or float switch manually to make sure that it opens and closes properly. h޼WQO�8�+~���;q�U�����U�w. Also check for erosion, sagging, torn sheets, or evidence of ice damage. Operate valve manually through its full range of travel and reset the valves to balance water flow to all basin sections. Kolkata, West Bengal Coupling or Drive Shaft Assembly – connect motor to gear box (assumes right angle configuration). Safety belts or single lanyard systems do not provide adequate fall protection. Cooling Tower Fan Blade Angle Measurement Tool by Saum Hadi Posted on February 16, 2020 Thermal performance evaluation of an dyson pure cool tower review the air cooler fan or tower learn cooling tower … Note the material, arrangement and vertical spacing of louvers. Save time and effort with the MarleyInspections cooling tower inspections app, now available on iOS. Cooling Tower Fan Blade Angle Measurement Tool. Look for leaks between adjoining panels. Blade # As Found After Adjustment Pitch must be within +1-0.20 Mount Protractor on Flat bar as base and place it approximately 1" from tip of blade Fan Blade Tracking As Found After Ad'ustment Look for signs of wear, such as checks and gouges, indicating that belts should be changed. Look for evidence of tearing or cracking in the structure. Check for loose or damaged bearings. 20/3, Chawl Patty Road, Beleghata, Kolkata - 700010, Dist. Marley® fan cylinders are crucial components for protecting fan blades, minimizing sound and vibration, and facilitating optimal performance across all cooling tower applications. This data was obtained by a major cooling tower manufacturer who carefully measured air flow magnitude and direction across a blade in a full scale cooling tower. Key words: blade angles, performance of a small cooling tower A dull, low pitch sound indicates softness, while a higher pitched sharp sound indicates good solid wood. Check for adequate connection to branch pipe or distribution basin floor. Look for any leaks between adjoining stack segments. Is there such a thing as different fan blade pitches for condensers? We manufacture and supply high quality Cooling Tower Fans, Belts, and Fan Wind Milling Stops. Tear off a small piece of adhesive tape approximately 2 inches long and write "1" on it with your permanent marker. Fans serve the function of forcing or driving air throughout the cooling tower. For any cooling tower manufacturer ) (cps supply a wide range of cooling tower parts and services to enable reliable, trouble free operation for your cooling towers. Tolerance between the diagonal length should not more than 3mm. Check the fan shaft bearing lubricant, and re-lubricate if necessary. Check the condition and tightness of all assembly and hold-down hardware. Look also for fallen or misplaced splash bars. The measurement of Inlet Wet-Bulb Temperature is required for the testing of all types of cooling towers. At a gulf coast facility one cooling tower fan experienced elevated vibration levels from the day it was commissioned. Belt Drive Fan System Check the condition of the pulleys, looking for any corrosion or loss of metal in the pulley grooves or on the webs. Cooling towers offer the vibration analyst many challenges in sensor selection, mounting and ... and fans all need measurement and analysis of vibrations to improve reliability and extend equipment life. Ceramic bricks are another type of splash fill. Adjust tip clearance by adjusting the cylinder or support according to the manufacturer’s instructions. frequencies present at cooling towers: fan speed, motor speed & blade-pass frequency. Inspect the integrity of basin support members. Pay particular attention to any damage or deterioration that may pose a potential safety hazard for operating and maintenance personnel. Many driveshafts consist of a single span. Check for proper belt tension and alignment. HP and RPM It is important to match a fan blade to a motor's horsepower and speed. When a situation calls for climbing the cooling tower structure , workers should be equipped with a full-body harness and two shockabsorbing lanyards of at least six feet in length. It is important to periodically inspect an operating cooling tower for good biological control and to have a proactive water treatment plan in place, per ANSI/ASHRAE Standard 188 and Guideline 12. Good biological control is indicated by clean, clear water with no green or brown algae below the water line. When inspecting stairways, be sure to look for evidence of wood decay or steel corrosion. Pay particular attention to the wood around steel or cast iron fasteners and connectors, as well as the bottom of columns. When inspecting the gear drive, turn the fan off, check the oil level, and add or replace oil as necessary. New tower. Make sure that all connections between the bearing housing and the support are tight and in good condition. Considered will be a 26 -ft, 28ft, or 30 -ft-diameter fan. Scheduling a regular, thorough inspection is an essential step in safeguarding the efficiency and lifespan of your cooling tower. Might be accurate to a degree or so. Carefully examine the connections between the blades and hub. Duty requirements are 1.1 million actual cfm, 0.477 -in. Check the condition of louver support members, and of the connections between the louvers (supports) and the tower itself. M. R. Associates Beleghata, Kolkata No. Curve "A" shows the performance of an extruded type blade with no hub seal disc. Air is being pushed out the sides of the top instead of directly out of the top of the unit. 4.1.2 Range Range is determined not by the cooling tower, but by the process it is serving. Your Marley sales representative will be happy to help you with parts and service or to guide you toward a qualified service contractor. That’s me, the trainer, inside the fan. However, some still include two shafts together with an intermediate bearing housing support. 48 Wall Exhaust Fans With Louvers. endstream endobj 67 0 obj <> endobj 68 0 obj <> endobj 69 0 obj <>stream ABS cooling tower fans are designed by adjustable fan angle, adjust process is as below: 1. using a wrench, loosen the lock screw. Check wood for decay, and check for corrosion of steel. (a) T-25 – T-250: Made of reinforced plastic material, the blades are coupled to the fan hub by bolts and glue. 66 0 obj <> endobj Archives Also, examine the tower members that support the grid itself. Always wear proper safety equipment when inspecting your cooling tower. Inspect steel walkways for evidence of corrosion. Check the condition of support members. Note the sheet material and spacing in case you plan to order parts. Cold Water Basin Check for excessive buildup of sludge and accumulated debris that can provide an ideal breeding ground for bacteria. The horizontal and vertical spacing between adjacent splash bars, Whether the splash bars are installed parallel or perpendicular to the louver face, Shape of the splash bar (wood lath, T-bar, V-bar, M-bar, half-round, etc. Is it a 1994 Resco 3 Ton unit. Ladder and Handrail Check general condition of material and make sure that all connections between the ladder and the tower are tight and in good condition. Blade pitch is the angle at which the blades are set relative to parallel to the ground. SPX Cooling Technologies, Inc. is a leading global manufacturer of cooling towers, evaporative fluid coolers, evaporative condensers and air cooled heat exchangers. tower performance. Look closely for signs of corrosion near welded joints on galvanized steel towers. %PDF-1.5 %���� O Check the welds on steel and aluminum ladders. • The vibration levels at both motor & fan speed are to be measured at the motor while the vibration levels at the blade-pass frequency is to be measured at the fan … Figure 4, Results of Air Flow Test. Measure the degree of pitch on the fan blade. Louvers Make sure that all louvers are in place. Houston, Texas Fans Key to Optimum Cooling-Tower Design nomograph gives the reciprocal of the density ratio. (b) T-260 and above: Made of aluminum alloy, the blades are freely adjustable by the pitch angle scale of the fan hub. 104 0 obj <>stream Look for any loss of material resulting from corrosion or erosion. Typical varieties include plywood, steel, ACB, fiberglass and cellular configurations molded on the fill sheets. Personal Protective Equipment Always follow local Safety and Health regulations regarding personal protective equipment (PPE). We recently provided alignment training and assistance to the HVAC Group at the Federal Reserve Bank in Richmond, VA. 0:31. X-8 Sports Fan Wearer Hang Neck Type Fan Aromatherapy Cooling Mini Fan 16.9 Mini Portable Electric Fan 2000mAh Handheld Rechargeable 3-in-1 USB Air Cooling Fold Tool … All the air is coming out around the sides at the top. Tighten all the bolts and nuts and … Sump screen should be free of trash. The following design data is required to select cooling towers: Flow Rate in GPM; Range of cooling in °F (T1 – T2) Area Wet Bulb Temperature in °F (Twb) The Design Heat Load is determined by the Flow Rate, and the Range of cooling, and is calculated using the following formula: Heat … Be sure that all nozzle components (such as removable splash plates) are in place and working properly. Best Cooling Tower Fan 2019. Pitch Angle - Blade tip angle below the horizontal required to do the design work and move air upward. Safety first! For a ceiling fan to move the correct amount of air and achieve good circulation, you should set the blades at a 14-degree angle. Poor control is detected by cloudy, dirty, or foul-smelling water. Look for evidence of corrosion or other damage on the tube, particularly near any welds. 87 0 obj <>/Filter/FlateDecode/ID[<0488E65975F1D38EC3A12DA806E904E2><707517D06574204E9A3C29A5853053F4>]/Index[66 39]/Info 65 0 R/Length 104/Prev 194722/Root 67 0 R/Size 105/Type/XRef/W[1 3 1]>>stream ). It’s the angle of the cooling tower fan blades relative to the shaft axis; cooling towers usually have propeller fans on the top to draw air through the tower. . Spot check the tightness of bolted structural joints. If a section of grid shows excessive deterioration, it should be replaced. Check the support itself for evidence of corrosion or other damage, and check the tightness of connections between the support and the tower structure. Inspect wood members both visually and by tapping with a hammer. h�bbd```b``��� ��3�de�,/���`�)��&��$X�0���+��j��� �z�2H2���)@���d&�.�U20҄�����#@� } Knowing the angle of the blade and the distance … angle. In either case, consider replacing asbestos fill immediately. Make sure that shafts and seals are in good condition. 3. Cooling Tower Hygiene An unclean tower can be an amplifier of unhealthy biological agents. 0 Check the tightness of connections between the walkway and the tower structure. 1.2 basics of cooling towers: 7kh ghpdqg iru hohfwulf srzhu kdv lqfuhdvhg wr vxfk dq h[whqw wkdw lw lv qrz qr orqjhu mxvwlildeoh wr vlwh wkh odujh srzhu vwdwlrq qhdu ulyhu vlgh¶v 7kh suhvhqw wuhqg lv wr orfdwh wkh vwdwlrq qhdu wkh ordg fhqwhu zlwk wkh xvh ri odujh dqg kljko\ hiilflhqw frrolqj wrzhuv If necessary, temporarily remove a nozzle and disassemble it to look for internal clogging. Use these instructions to perform a thorough inspection on virtually any cooling tower. Before starting a cooling tower inspection it is important to identify all potential safety and health hazards associated with the work and identify how each hazard will be eliminated or controlled. Two lanyards allow movement while providing fall protection at all times. Make sure that the bushings holding the pulleys on the shafts are tight and in good condition. �/��:̂L����T20�r00�b8q�*Ӌ%@��'���P�O� �vC Check alignment using any approved method, such as a dial indicator or optical device. Blade tip clearance: To provide effective cooling and to reduce vibration, fan blade tips should be equal across the plenum, or fan shroud. Also look for rust-colored corrosion “pockets.” These pockets may be filled with black liquid that smells like rotten eggs. The measurement of inlet dry-bulb temperature is required for natural draft and fan assist cooling towers. If your driveshaft includes a mid-span bearing, check the bearing carefully, adding lubricant as necessary. Blades that are set at a lower angle will slice the air but not create proper air circulation. Most every week during one of our alignment training classes, we’ll get a question about aligning cooling towers.Most facilities we visit have them and a lot of … When inspecting the fan, measure fan blade tip clearance all around the cylinder, using the longest fan blade. Examine metallic flex elements very carefully for signs of corrosion or fatigue. Therefore other design parameters are also needed. Fall protection should be provided as required. Examine elastomeric flex elements for cracks, brittleness or other signs of wear. Fan Cylinder (Shrouds) Check overall condition of the material, paying particular attention to any welds in steel shrouds. Angle Perfect III The Only Measurement Tool You Need to Set Up The Five Critical Elements of Your Table Saw Alignment ™ - The Angle Perfect setting device takes the guess work out of setting 45 & 90 degree saw blade angles. Check for buildup of scale, algae, or other contaminants on the surface of the sheets. Splash fill consists of wood or plastic bars in various shapes, supported in a fixed spacing and orientation, usually using a wire or fiberglass grid. Cooling Tower Fan Blade Angle Calculation. When inspecting fill, look for sagging, broken or decaying splash bars or excessive buildup of scale. Look for sagging, broken or decaying splash bars or excessive buildup of scale. 2. grabbing at the fan center, rotating blades to the required Angle by another hand (keep an eye on the blades and fan heart scale); 3. turn the other blades to the same as the first fan scale; 4. lock screw. 4200mm long x 750mm dia coolining tower fan fan blade made of fibre glass. If observed conditions indicate poor biological control, the tower should be thoroughly cleaned and the water treatment system evaluated. Replace cooling tower fan blades. Distribution Basin Check for deterioration of the basic material. Spot check the tightness of bolted joints. If you must replace any component in a two-shaft system, you should investigate replacing the entire system with a single-span shaft, which will reduce your maintenance costs dramatically. Hudson fans all rotate clockwise looking into the airflow. Check the coating on steel grids, the condition of the welds on stainless wire grids, and the general condition of fiberglass grids. Always refer to your tower’s user manual if you have specific questions about your cooling tower. If you must move the gearbox to correct a bolt bound situation, be sure to check the blade tip clearance. Do you dread changing the angle on your saw blade knowing that you can't depend on the built in saw scale. For example, a cooling tower sized to cool 4540 m3/hr through a 13.9 °C range might be larger than a cooling tower to cool 4540 m3/hr through 19.5 °C range. When you’ve filled out the checklist, use the results to help plan your cooling tower repair and maintenance. It used 6 fiberglass blades with a tip to tip diameter of approximately 30 feet driven by a variable speed motor connected to a right angle drive gearbox through a 184” long flexible coupling. Check condition of sump, sump screen, and anti-cavitation device (if one is used). The inspection should include, at a minimum, visual evaluation of the condition of the water and the distribution basins. Check tightness of bolted joints in steel or fiberglass basins. 7401 W. 129th St., Overland Park, KS 66213 | 1-800-4-MARLEY, About Us Connect With Us News Green Building and LEED Water Calculator UPDATE Selection Software Proof in Performance, Rep Search Contact Careers Terms of Use Cookies Privacy Policy SPX Partners Site Find Marley Parts. Set the Blades. You’ll benefit from improved performance that modern high-efficiency fill designs offer. 3mm, sheet metal spacer should be added under the tower support. Clean cooling towers result from practicing biological testing and using effective biological control procedures, which also mitigate corrosion and scaling. Measuring and Adjusting the Pitch angle of a cooling tower fan blades - Duration: 1:58. Neal M. Brown 936 views. %%EOF If you are searching for cooling tower fans, cooling tower fan manufacturers , industrial cooling tower fans, cooling tower fan blades, or cooling tower fans suppliers, Universal Tower Parts can help!. Structure Inspect the structure of a steel tower for evidence of corrosion—particularly any loss of metal. Check for excessive scale buildup or biological growth. Inspect wood, steel and fiberglass basins carefully for any signs of leaks or breakdown of sealing material. Check the joints between the motor mount and its support. Getting Started with Cooling Towers "cooling tower" By Patrick Lawrence on October 17, 2011. Interior Walkway Look for broken or deteriorated treads and rails on wood or fiberglass walkways. possible to replace a three-blade fan with a four-blade fan, or vice versa, as long as the designed cubic feet per minute (cfm) is a match. Write the degree on a piece of paper. Propeller fans may be either fixed-pitch, with welded or riveted connections between the blades and hub; or adjustable pitch, having bolted connections between the blades and hub and some means of readjusting blade pitch angle. These are general instructions, so some portions may not apply to your cooling tower. Consider replacing ACB louvers immediately regardless of condition. Fin Fan Check if there is a system vibration issue Mark fan blade numbers with mark on each fan blade Fan Blade Pitch Fan Pitch Design. that blade area is not considered. Use this form to request a cooling tower inspection, and your localMarley® representative will contact you with more information. Measure fan blade tip clearance all around the cylinder, using the longest fan blade. Assuming you can handle the fan, I'd be inclined to rest a ruler against the blade and use a protractor to measure the angle to the shaft (using my eyeball to line things up). Marley h3 fan blade pitch adjustment; Marley x7 blade pitch adjustment; Measuring and Adjusting the Pitch Angle of a Cooling Tower Fan Blades Note particularly any corrosion or loss of metal in cold water basin components. Inspect joint connectors for evidence of corrosion or other signs of deterioration. 3 ) Check the basin is regularly by using nylon string, tape to measure 4 angles of the basin. Basin Flow-Control Valves Inspect valve components for corrosion or signs of wear. For nearly a century, we have provided exceptional quality equipment and service to the HVAC, process cooling, industrial, and refrigeration markets. Spray Nozzles Check for clogging or signs of internal wear. 7.2 Cooling Tower Performance 7. This was a Marley cooling tower, with a 60 HP motor, connected to the gearbox by a 48″ spacer shaft. Finally, it was found that the cooling tower can operate under all the given approaches (5 °C, 6°C, 7°C and 8 °C) at the blade angle of 67 ° by maintaining the cooling range of 5 °C, wet bulb temperature of 26°C, and water flow rate of 3.9 m3/h. Direct Drive Fan System Make sure that the fan bushing is tight on the motor shaft and that the bushing and its hardware are in good condition. Planning ahead helps alert workers to potential safety hazards and take appropriate preventive action. Check alignment of both shafts and make sure that bearing hold-down hardware is tight and in good condition. 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