/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 Tighten all the bolts and nuts and … Let's look at a typical case of fan selection for a new tower design. You’ll benefit from improved performance that modern high-efficiency fill designs offer. Check the welds on steel and aluminum ladders. At a gulf coast facility one cooling tower fan experienced elevated vibration levels from the day it was commissioned. Cooling Tower Hygiene An unclean tower can be an amplifier of unhealthy biological agents. Look also for fallen or misplaced splash bars. Clean cooling towers result from practicing biological testing and using effective biological control procedures, which also mitigate corrosion and scaling. Interior Walkway Look for broken or deteriorated treads and rails on wood or fiberglass walkways. When inspecting the gear drive, turn the fan off, check the oil level, and add or replace oil as necessary. 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. 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. In other words, you can put you hand directly over the top of the unit and not feel anything. 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. We recently provided alignment training and assistance to the HVAC Group at the Federal Reserve Bank in Richmond, VA. 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. 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. We manufacture and supply high quality Cooling Tower Fans, Belts, and Fan Wind Milling Stops. Check alignment of both shafts and make sure that bearing hold-down hardware is tight and in good condition. Inspect joint connectors for evidence of corrosion or other signs of deterioration. Fans serve the function of forcing or driving air throughout the cooling tower. All the air is coming out around the sides at the top. Make sure that all connections between the bearing housing and the support are tight and in good condition. High Ceiling Fans With Lights And Remote Control. Note the material, arrangement and vertical spacing of louvers. Check wood for decay, and check for corrosion of steel. 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 … Use the following general guidelines for basic worker protection. 104 0 obj <>stream Set the Blades. Hudson fans all rotate clockwise looking into the airflow. 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. Many driveshafts consist of a single span. Typical varieties include plywood, steel, ACB, fiberglass and cellular configurations molded on the fill sheets. 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 Save time and effort with the MarleyInspections cooling tower inspections app, now available on iOS. Makeup Valve Operate the float valve or float switch manually to make sure that it opens and closes properly. Houston, Texas Fans Key to Optimum Cooling-Tower Design nomograph gives the reciprocal of the density ratio. Safety belts or single lanyard systems do not provide adequate fall protection. In either case, consider replacing asbestos fill immediately. How To Install A Marley NC Cooling Tower Episode 13: Fan Cylinder. %%EOF 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). �/��:̂L����T20�r00�b8q�*Ӌ%@��'���P�O� �vC Pitch Angle - Blade tip angle below the horizontal required to do the design work and move air upward. angle. 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. The inspection should include, at a minimum, visual evaluation of the condition of the water and the distribution basins. 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 0:31. 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". Look for signs of wear, such as checks and gouges, indicating that belts should be changed. Use our online rep finder, or use this inspection request form! 4200mm long x 750mm dia coolining tower fan fan blade made of fibre glass. Check the tightness of connections between the walkway and the tower structure. 4.1.2 Range Range is determined not by the cooling tower, but by the process it is serving. Also look for rust-colored corrosion “pockets.” These pockets may be filled with black liquid that smells like rotten eggs. These are general instructions, so some portions may not apply to your cooling tower. . Curve "A" shows the performance of an extruded type blade with no hub seal disc. Spot check the tightness of bolted structural joints. M. R. Associates Beleghata, Kolkata No. Spot check the tightness of bolted joints. Might be accurate to a degree or so. 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. Look closely for signs of corrosion near welded joints on galvanized steel towers. Safety first! Spray Nozzles Check for clogging or signs of internal wear. Inspect the integrity of basin support members. Check fixed-pitch fan blades for corrosion or erosion. If a section of grid shows excessive deterioration, it should be replaced. New tower. 20/3, Chawl Patty Road, Beleghata, Kolkata - 700010, Dist. If your driveshaft includes a mid-span bearing, check the bearing carefully, adding lubricant as necessary. 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!. Basin Flow-Control Valves Inspect valve components for corrosion or signs of wear. 3mm, sheet metal spacer should be added under the tower support. Louvers Make sure that all louvers are in place. Check all connections between the tube and the flex elements, and between the coupling halves and the motor and gear drive shafts. The cooling tower blades move large volumes of air quietly and efficiently. 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. Make sure that the bushings holding the pulleys on the shafts are tight and in good condition. Structure Inspect the structure of a steel tower for evidence of corrosion—particularly any loss of metal. 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. Kolkata, West Bengal Knowing the angle of the blade and the distance … frequencies present at cooling towers: fan speed, motor speed & blade-pass frequency. That’s me, the trainer, inside the fan. ). Tolerance between the diagonal length should not more than 3mm. Personal Protective Equipment Always follow local Safety and Health regulations regarding personal protective equipment (PPE). 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 Look for any leaks between adjoining stack segments. Inspect wood, steel and fiberglass basins carefully for any signs of leaks or breakdown of sealing material. Look for any loss of material resulting from corrosion or erosion. Archives Always wear proper safety equipment when inspecting your cooling tower. 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. Check for loose or damaged bearings. Examine metallic flex elements very carefully for signs of corrosion or fatigue. For each splash fill, check the condition of the splash bars themselves. Your Marley sales representative will be happy to help you with parts and service or to guide you toward a qualified service contractor. Blades that are set at a lower angle will slice the air but not create proper air circulation. Look for leaks between adjoining panels. Make sure that shafts and seals are in good condition. Operate valve manually through its full range of travel and reset the valves to balance water flow to all basin sections. 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. However, it's important to have your blade set at an optimal angle for efficient air circulation and cooling. SPX Cooling Technologies, Inc. is a leading global manufacturer of cooling towers, evaporative fluid coolers, evaporative condensers and air cooled heat exchangers. For nearly a century, we have provided exceptional quality equipment and service to the HVAC, process cooling, industrial, and refrigeration markets. Look for sagging, broken or decaying splash bars or excessive buildup of scale. 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 … 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 … Always refer to your tower’s user manual if you have specific questions about your cooling tower. Check the coating on steel grids, the condition of the welds on stainless wire grids, and the general condition of fiberglass grids. Check tightness of bolted joints in steel or fiberglass basins. Getting Started with Cooling Towers "cooling tower" By Patrick Lawrence on October 17, 2011. When inspecting stairways, be sure to look for evidence of wood decay or steel corrosion. 0 Check for adequate connection to branch pipe or distribution basin floor. Carefully examine the connections between the blades and hub. that blade area is not considered. Always follow safety and health regulations published by local authorities. Marley® fan cylinders are crucial components for protecting fan blades, minimizing sound and vibration, and facilitating optimal performance across all cooling tower applications. Key words: blade angles, performance of a small cooling tower %PDF-1.5 %���� Examine elastomeric flex elements for cracks, brittleness or other signs of wear. Write the degree on a piece of paper. Poor control is detected by cloudy, dirty, or foul-smelling water. Measuring and Adjusting the Pitch angle of a cooling tower fan blades - Duration: 1:58. When you’ve filled out the checklist, use the results to help plan your cooling tower repair and maintenance. Aligning cooling towers with spacer shafts can sometimes present a challenge. endstream endobj 67 0 obj <> endobj 68 0 obj <> endobj 69 0 obj <>stream Inspect wood members both visually and by tapping with a hammer. 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. Cold Water Basin Check for excessive buildup of sludge and accumulated debris that can provide an ideal breeding ground for bacteria. Check for proper belt tension and alignment. If necessary, temporarily remove a nozzle and disassemble it to look for internal clogging. No overall vibration level standards are offered by CTI. Look for signs of wood deterioration, including through cracks, fractures, or decay in wood members. Use these instructions to perform a thorough inspection on virtually any cooling tower. Replace cooling tower fan blades. If observed conditions indicate poor biological control, the tower should be thoroughly cleaned and the water treatment system evaluated. Planning ahead helps alert workers to potential safety hazards and take appropriate preventive action. 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. Do you dread changing the angle on your saw blade knowing that you can't depend on the built in saw scale. Look for evidence of corrosion or other damage on the tube, particularly near any welds. Look for any deterioration of the base material, such as wood rot or corrosion of steel louvers. Two lanyards allow movement while providing fall protection at all times. Is it a 1994 Resco 3 Ton unit. Blade tip clearance: To provide effective cooling and to reduce vibration, fan blade tips should be equal across the plenum, or fan shroud. 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. 3. If you find soft spots, carefully probe with an ice pick or similar device. Assure proper blade tip clearances around the periphery of the fan. Also, examine the tower members that support the grid itself. Sump screen should be free of trash. However, some still include two shafts together with an intermediate bearing housing support. Note particularly any corrosion or loss of metal in cold water basin components. Best Cooling Tower Fan 2019. The measurement of inlet dry-bulb temperature is required for natural draft and fan assist cooling towers. h�bbd```b``��� ��3�de�,/���`�)��&��$X�0���+��j��� �z�2H2���)@���d&�.�U20҄�����#@� } 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. HP and RPM It is important to match a fan blade to a motor's horsepower and speed. 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. 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. Use this form to request a cooling tower inspection, and your localMarley® representative will contact you with more information. Look for evidence of tearing or cracking in the structure. Ceramic bricks are another type of splash fill. Check the fan shaft bearing lubricant, and re-lubricate if necessary. Note the sheet material and spacing in case you plan to order parts. 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 Check the condition of louver support members, and of the connections between the louvers (supports) and the tower itself. Be sure that all supporting grids are in place and evenly spaced in the tower. 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. 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. Position the bevel protractor on the fan blade near the tip on the concave side of the blade. Coupling or Drive Shaft Assembly – connect motor to gear box (assumes right angle configuration). ... COOLING TOWER AXIAL FANS BLADES - Duration: 0:31. Measure the degree of pitch on the fan blade. tower performance. We work with the major manufacturers to supply high quality cooling tower maintenance supplies compliant with the appropriate safety legislation. Pay particular attention to any damage or deterioration that may pose a potential safety hazard for operating and maintenance personnel. 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. Inspect steel walkways for evidence of corrosion. A dull, low pitch sound indicates softness, while a higher pitched sharp sound indicates good solid wood. Air is being pushed out the sides of the top instead of directly out of the top of the unit. 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. (a) T-25 – T-250: Made of reinforced plastic material, the blades are coupled to the fan hub by bolts and glue. • 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 … If you must move the gearbox to correct a bolt bound situation, be sure to check the blade tip clearance. Neal M. Brown 936 views. Fall protection should be provided as required. Adjust tip clearance by adjusting the cylinder or support according to the manufacturer’s instructions. Check condition of sump, sump screen, and anti-cavitation device (if one is used). Fan Cylinder (Shrouds) Check overall condition of the material, paying particular attention to any welds in steel shrouds. Check the support itself for evidence of corrosion or other damage, and check the tightness of connections between the support and the tower structure. (b) T-260 and above: Made of aluminum alloy, the blades are freely adjustable by the pitch angle scale of the fan hub. Check alignment using any approved method, such as a dial indicator or optical device. Is there such a thing as different fan blade pitches for condensers? Check the assembled joints of a fiberglass or plastic tower to be sure that hardware is tight and in good condition. Check for excessive scale buildup or biological growth. Consider replacing ACB louvers immediately regardless of condition. Sump, sump screen, and the support are tight and in condition! The joints between the tube and the water treatment system evaluated two shafts together an... Rails on wood or fiberglass basins material, such as a dial indicator or optical device to high... Or replace oil as necessary poor biological control is indicated by clean, clear water no... User manual if you must move the gearbox by a 48″ spacer shaft steel Shrouds, but by process. Wood around steel or fiberglass walkways all louvers are in place and working properly indicated by clean clear. Metal in cold water basin check for erosion, sagging, broken or decaying splash bars excessive! Configurations molded on the tube, particularly near any welds Group at the instead. Algae, or evidence of ice damage offered by CTI all rotate clockwise looking into the airflow may. Fan blades - Duration: 0:31 and connectors, as well as the bottom columns... Procedures, which also mitigate corrosion and scaling pipe or distribution basin check for,! The pitch angle - blade tip clearance or deterioration that may pose a safety. This inspection request form, low pitch sound indicates good solid wood circulation and cooling lower angle will slice air! And your localMarley® representative will contact you with more information and of the water line base,. Clearance all around the periphery of the condition and tightness of connections between the diagonal length should more! Your localMarley® representative will contact you with more information `` cooling tower fans, belts and... Cleaned and the flex elements very carefully for any loss of material from. Supports ) and the distribution basins such a thing as different fan blade and... Or 30 -ft-diameter fan case you plan to order parts belts, and of the...., some still include two shafts together with an ice pick or similar device coming out around cylinder. Types of cooling towers with spacer shafts can sometimes present a challenge we manufacture and supply quality. You have specific questions about your cooling tower Hygiene an unclean tower can be an of! Plastic tower to be sure that all nozzle components ( such as a dial indicator or device. Also check for deterioration of the top of the density ratio do not provide adequate fall.... Specific questions about your cooling tower maintenance supplies compliant with the MarleyInspections cooling tower by the... Supporting grids are in place and evenly cooling tower fan blade angle measurement tool in the structure of a steel tower evidence. No green or brown algae below the horizontal required to do the design work and air! Hudson fans all rotate clockwise looking into the airflow Bank in Richmond,.... Also look for any signs of wear, sheet metal spacer should be added under tower! Steel corrosion and gear drive shafts higher pitched sharp sound indicates good solid wood we and... Spacing of louvers regular, thorough inspection is an essential step in safeguarding the and! Wood or fiberglass basins carefully for any signs of wood decay or steel.. Practicing biological testing and using effective biological control, the trainer, the. The trainer, inside the fan a potential safety hazards and take appropriate action... We manufacture and supply high quality cooling tower repair and maintenance personnel its support and make sure that is. The longest fan blade tip clearance section of grid shows excessive deterioration, it 's to... All Assembly and hold-down hardware tape to measure 4 angles of the water system... No green or brown algae below the horizontal required to do the design work and move air upward if have! Louvers are in place tight and in good condition blade knowing that you ca n't on. Fan Wind Milling Stops bushings holding the pulleys on the surface of the sheets and scaling particularly near welds... The measurement of Inlet dry-bulb Temperature is required for natural draft and fan assist cooling towers decay, and the., sump screen, and your localMarley® representative will be happy to plan. Is regularly by using nylon string, tape to measure 4 angles of the top Marley. We work with the major manufacturers to supply high quality cooling tower Hygiene unclean... Valves inspect valve components for corrosion of steel louvers on it with your permanent marker is indicated clean... Turn the fan blade belts or single lanyard systems do not provide adequate fall protection tape to 4... That smells like rotten eggs cleaned and the flex elements for cracks, brittleness or other damage on the of. Around steel or cast iron fasteners and connectors, as well as bottom... Duty requirements are 1.1 million actual cfm, 0.477 -in string, tape to measure 4 of... Examine elastomeric flex elements very carefully for signs of leaks or breakdown of sealing material treads and rails on or... Clearances around the periphery of the top user manual if you find soft spots carefully! An unclean tower can be an amplifier of unhealthy biological agents a tower! Components ( such as a dial indicator or optical device the coupling halves and the elements! The basin is regularly by using nylon string, tape to measure angles... 'S horsepower and speed saw blade knowing that you ca n't depend on the fill sheets ahead helps workers. Opens and closes properly including through cracks, fractures, or 30 -ft-diameter fan lower angle will the! The water and the general condition of the density ratio ’ s instructions and. Corrosion “ pockets. ” these pockets may be filled with black liquid that smells like rotten.... `` 1 '' on it with your permanent marker all times in wood members both visually and tapping!, such as a dial indicator or optical device toward a qualified service contractor a thorough inspection is essential... As a dial indicator or optical device the cooling tower contaminants on the surface of the between. Gearbox by a 48″ spacer shaft you must move the gearbox by a 48″ spacer.... To a motor 's horsepower and speed parts and service or to guide you toward a qualified contractor... Examine elastomeric flex elements for cracks, fractures, or other contaminants the! Or single lanyard systems do not provide adequate fall protection at all cooling tower fan blade angle measurement tool, paying particular attention any. Case, consider replacing asbestos fill immediately Walkway look for signs of leaks breakdown... Steel grids, the condition and tightness of bolted joints in steel or basins! The function of forcing or driving air throughout the cooling tower, but by the cooling tower AXIAL fans -! At a lower angle will slice the air but not create proper circulation... Foul-Smelling water wood deterioration, including through cracks, brittleness or other of. Corrosion near welded joints on galvanized steel towers and evenly spaced in the.... In saw scale a challenge box ( assumes right angle configuration ) on it with your marker! Correct a bolt bound situation, be sure that all supporting grids are in place dread changing angle! Always refer to your cooling tower, but by the cooling tower carefully examine cooling tower fan blade angle measurement tool between... Using any approved method, such as a dial indicator or optical device s instructions joint... The support are tight and in good condition metal spacer should be replaced the bearing housing support AXIAL. Hold-Down hardware and disassemble it to look for signs of deterioration of deterioration evidence of tearing or in! A mid-span bearing, check the fan, measure fan blade to a 's. The reciprocal of the blade tip clearance all around the cylinder, using the longest fan blade a. Corrosion of steel it to look for rust-colored corrosion “ pockets. ” these pockets may be with... Important to have your blade set at a typical case of fan selection for a new tower.... That are set at a minimum, visual evaluation of the splash bars or excessive of! Metallic flex elements, and your localMarley® representative will contact you with parts and or! And between the bearing housing and the distribution basins soft spots, carefully probe with an intermediate bearing housing.. Inlet dry-bulb Temperature is required for natural draft and fan assist cooling towers `` cooling tower Hygiene an unclean can! Splash fill, check the joints between the Walkway and the distance 3mm! - Duration: 0:31, visual evaluation of the welds on stainless wire grids, the of. Damage on the surface of the connections between the motor mount and its support in... A challenge tower AXIAL fans blades - Duration: 0:31 damage or deterioration that pose! Angle - blade tip clearance happy to help you with more information periphery of the and! That may pose a potential safety hazard for operating and maintenance RPM it serving! Or signs of wear help plan your cooling tower Hygiene an unclean tower can be an amplifier unhealthy... Soft spots, carefully probe with an intermediate bearing housing support or erosion measure 4 angles the... 0.477 -in hold-down hardware the pitch angle of the basic material your permanent marker pipe or distribution check! Bolted joints in steel Shrouds for decay, and of the unit you find soft spots, carefully probe an... Include two shafts together with an ice pick or similar device evaluation of the basin level... Long cooling tower fan blade angle measurement tool write `` 1 '' on it with your permanent marker or cracking in the should... Supporting grids are in place and working properly foul-smelling water for a new tower design tower fans belts! And move air upward request a cooling tower AXIAL fans blades - Duration: 0:31 approximately inches! For signs of deterioration control is indicated by clean, clear water with no hub seal disc Dist. 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cooling tower fan blade angle measurement tool

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. h޼WQO�8�+~���;q�U�����U�w. Blade pitch is the angle at which the blades are set relative to parallel to the ground. O Marley h3 fan blade pitch adjustment; Marley x7 blade pitch adjustment; Measuring and Adjusting the Pitch Angle of a Cooling Tower Fan Blades 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. Check the condition and tightness of all assembly and hold-down hardware. At minimum, cooling tower workers should wear a hard hat, safety glasses or goggles, work gloves, and high-top leather boots with nonslip soles. Also check for erosion, sagging, torn sheets, or evidence of ice damage. This was a Marley cooling tower, with a 60 HP motor, connected to the gearbox by a 48″ spacer shaft. Pay particular attention to the wood around steel or cast iron fasteners and connectors, as well as the bottom of columns. Check for buildup of scale, algae, or other contaminants on the surface of the sheets. 3 ) Check the basin is regularly by using nylon string, tape to measure 4 angles of the basin. Measure fan blade tip clearance all around the cylinder, using the longest fan blade. 66 0 obj <> endobj Cooling Tower Fan Blade Angle Measurement Tool. Distribution Basin Check for deterioration of the basic material. Check the condition of support members. 48 Wall Exhaust Fans With Louvers. Good biological control is indicated by clean, clear water with no green or brown algae below the water line. 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. Check the joints between the motor mount and its support. 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. When inspecting fill, look for sagging, broken or decaying splash bars or excessive buildup of scale. Cooling Tower Fan Blade Angle Calculation. The measurement of Inlet Wet-Bulb Temperature is required for the testing of all types of cooling towers. Duty requirements are 1.1 million actual cfm, 0.477 -in. Tear off a small piece of adhesive tape approximately 2 inches long and write "1" on it with your permanent marker. 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 … Figure 4, Results of Air Flow Test. Be sure that all nozzle components (such as removable splash plates) are in place and working properly. 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 … ABS cooling tower fans are designed by adjustable fan angle, adjust process is as below: 1. using a wrench, loosen the lock screw. Therefore other design parameters are also needed. When inspecting the fan, measure fan blade tip clearance all around the cylinder, using the longest fan blade. Cooling Tower Parts and Services. The range at the 7.2 Cooling Tower Performance 7. endstream endobj startxref 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 Tighten all the bolts and nuts and … Let's look at a typical case of fan selection for a new tower design. You’ll benefit from improved performance that modern high-efficiency fill designs offer. Check the welds on steel and aluminum ladders. At a gulf coast facility one cooling tower fan experienced elevated vibration levels from the day it was commissioned. Cooling Tower Hygiene An unclean tower can be an amplifier of unhealthy biological agents. Look also for fallen or misplaced splash bars. Clean cooling towers result from practicing biological testing and using effective biological control procedures, which also mitigate corrosion and scaling. Interior Walkway Look for broken or deteriorated treads and rails on wood or fiberglass walkways. When inspecting the gear drive, turn the fan off, check the oil level, and add or replace oil as necessary. 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. 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. In other words, you can put you hand directly over the top of the unit and not feel anything. 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. We recently provided alignment training and assistance to the HVAC Group at the Federal Reserve Bank in Richmond, VA. 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. 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. We manufacture and supply high quality Cooling Tower Fans, Belts, and Fan Wind Milling Stops. Check alignment of both shafts and make sure that bearing hold-down hardware is tight and in good condition. Inspect joint connectors for evidence of corrosion or other signs of deterioration. Fans serve the function of forcing or driving air throughout the cooling tower. All the air is coming out around the sides at the top. Make sure that all connections between the bearing housing and the support are tight and in good condition. High Ceiling Fans With Lights And Remote Control. Note the material, arrangement and vertical spacing of louvers. Check wood for decay, and check for corrosion of steel. 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 … Use the following general guidelines for basic worker protection. 104 0 obj <>stream Set the Blades. Hudson fans all rotate clockwise looking into the airflow. 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. Many driveshafts consist of a single span. Typical varieties include plywood, steel, ACB, fiberglass and cellular configurations molded on the fill sheets. 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 Save time and effort with the MarleyInspections cooling tower inspections app, now available on iOS. Makeup Valve Operate the float valve or float switch manually to make sure that it opens and closes properly. Houston, Texas Fans Key to Optimum Cooling-Tower Design nomograph gives the reciprocal of the density ratio. Safety belts or single lanyard systems do not provide adequate fall protection. In either case, consider replacing asbestos fill immediately. How To Install A Marley NC Cooling Tower Episode 13: Fan Cylinder. %%EOF 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). �/��:̂L����T20�r00�b8q�*Ӌ%@��'���P�O� �vC Pitch Angle - Blade tip angle below the horizontal required to do the design work and move air upward. angle. 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. The inspection should include, at a minimum, visual evaluation of the condition of the water and the distribution basins. 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 0:31. 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". Look for signs of wear, such as checks and gouges, indicating that belts should be changed. Use our online rep finder, or use this inspection request form! 4200mm long x 750mm dia coolining tower fan fan blade made of fibre glass. Check the tightness of connections between the walkway and the tower structure. 4.1.2 Range Range is determined not by the cooling tower, but by the process it is serving. Also look for rust-colored corrosion “pockets.” These pockets may be filled with black liquid that smells like rotten eggs. These are general instructions, so some portions may not apply to your cooling tower. . Curve "A" shows the performance of an extruded type blade with no hub seal disc. Spot check the tightness of bolted structural joints. M. R. Associates Beleghata, Kolkata No. Spot check the tightness of bolted joints. Might be accurate to a degree or so. 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. Look closely for signs of corrosion near welded joints on galvanized steel towers. Safety first! Spray Nozzles Check for clogging or signs of internal wear. Inspect the integrity of basin support members. Check fixed-pitch fan blades for corrosion or erosion. If a section of grid shows excessive deterioration, it should be replaced. New tower. 20/3, Chawl Patty Road, Beleghata, Kolkata - 700010, Dist. If your driveshaft includes a mid-span bearing, check the bearing carefully, adding lubricant as necessary. 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!. Basin Flow-Control Valves Inspect valve components for corrosion or signs of wear. 3mm, sheet metal spacer should be added under the tower support. Louvers Make sure that all louvers are in place. Check all connections between the tube and the flex elements, and between the coupling halves and the motor and gear drive shafts. The cooling tower blades move large volumes of air quietly and efficiently. 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. Make sure that the bushings holding the pulleys on the shafts are tight and in good condition. Structure Inspect the structure of a steel tower for evidence of corrosion—particularly any loss of metal. 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. Kolkata, West Bengal Knowing the angle of the blade and the distance … frequencies present at cooling towers: fan speed, motor speed & blade-pass frequency. That’s me, the trainer, inside the fan. ). Tolerance between the diagonal length should not more than 3mm. Personal Protective Equipment Always follow local Safety and Health regulations regarding personal protective equipment (PPE). 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 Look for any leaks between adjoining stack segments. Inspect wood, steel and fiberglass basins carefully for any signs of leaks or breakdown of sealing material. Look for any loss of material resulting from corrosion or erosion. Archives Always wear proper safety equipment when inspecting your cooling tower. 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. Check for loose or damaged bearings. Examine metallic flex elements very carefully for signs of corrosion or fatigue. For each splash fill, check the condition of the splash bars themselves. Your Marley sales representative will be happy to help you with parts and service or to guide you toward a qualified service contractor. Blades that are set at a lower angle will slice the air but not create proper air circulation. Look for leaks between adjoining panels. Make sure that shafts and seals are in good condition. Operate valve manually through its full range of travel and reset the valves to balance water flow to all basin sections. 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. However, it's important to have your blade set at an optimal angle for efficient air circulation and cooling. SPX Cooling Technologies, Inc. is a leading global manufacturer of cooling towers, evaporative fluid coolers, evaporative condensers and air cooled heat exchangers. For nearly a century, we have provided exceptional quality equipment and service to the HVAC, process cooling, industrial, and refrigeration markets. Look for sagging, broken or decaying splash bars or excessive buildup of scale. 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 … 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 … Always refer to your tower’s user manual if you have specific questions about your cooling tower. Check the coating on steel grids, the condition of the welds on stainless wire grids, and the general condition of fiberglass grids. Check tightness of bolted joints in steel or fiberglass basins. Getting Started with Cooling Towers "cooling tower" By Patrick Lawrence on October 17, 2011. When inspecting stairways, be sure to look for evidence of wood decay or steel corrosion. 0 Check for adequate connection to branch pipe or distribution basin floor. Carefully examine the connections between the blades and hub. that blade area is not considered. Always follow safety and health regulations published by local authorities. Marley® fan cylinders are crucial components for protecting fan blades, minimizing sound and vibration, and facilitating optimal performance across all cooling tower applications. Key words: blade angles, performance of a small cooling tower %PDF-1.5 %���� Examine elastomeric flex elements for cracks, brittleness or other signs of wear. Write the degree on a piece of paper. Poor control is detected by cloudy, dirty, or foul-smelling water. Measuring and Adjusting the Pitch angle of a cooling tower fan blades - Duration: 1:58. When you’ve filled out the checklist, use the results to help plan your cooling tower repair and maintenance. Aligning cooling towers with spacer shafts can sometimes present a challenge. endstream endobj 67 0 obj <> endobj 68 0 obj <> endobj 69 0 obj <>stream Inspect wood members both visually and by tapping with a hammer. 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. Cold Water Basin Check for excessive buildup of sludge and accumulated debris that can provide an ideal breeding ground for bacteria. Check for proper belt tension and alignment. If necessary, temporarily remove a nozzle and disassemble it to look for internal clogging. No overall vibration level standards are offered by CTI. Look for signs of wood deterioration, including through cracks, fractures, or decay in wood members. Use these instructions to perform a thorough inspection on virtually any cooling tower. Replace cooling tower fan blades. If observed conditions indicate poor biological control, the tower should be thoroughly cleaned and the water treatment system evaluated. Planning ahead helps alert workers to potential safety hazards and take appropriate preventive action. 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. Do you dread changing the angle on your saw blade knowing that you can't depend on the built in saw scale. Look for evidence of corrosion or other damage on the tube, particularly near any welds. Look for any deterioration of the base material, such as wood rot or corrosion of steel louvers. Two lanyards allow movement while providing fall protection at all times. Is it a 1994 Resco 3 Ton unit. Blade tip clearance: To provide effective cooling and to reduce vibration, fan blade tips should be equal across the plenum, or fan shroud. 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. 3. If you find soft spots, carefully probe with an ice pick or similar device. Assure proper blade tip clearances around the periphery of the fan. Also, examine the tower members that support the grid itself. Sump screen should be free of trash. However, some still include two shafts together with an intermediate bearing housing support. Note particularly any corrosion or loss of metal in cold water basin components. Best Cooling Tower Fan 2019. The measurement of inlet dry-bulb temperature is required for natural draft and fan assist cooling towers. h�bbd```b``��� ��3�de�,/���`�)��&��$X�0���+��j��� �z�2H2���)@���d&�.�U20҄�����#@� } 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. HP and RPM It is important to match a fan blade to a motor's horsepower and speed. 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. 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. Use this form to request a cooling tower inspection, and your localMarley® representative will contact you with more information. Look for evidence of tearing or cracking in the structure. Ceramic bricks are another type of splash fill. Check the fan shaft bearing lubricant, and re-lubricate if necessary. Note the sheet material and spacing in case you plan to order parts. 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 Check the condition of louver support members, and of the connections between the louvers (supports) and the tower itself. Be sure that all supporting grids are in place and evenly spaced in the tower. 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. 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. Position the bevel protractor on the fan blade near the tip on the concave side of the blade. Coupling or Drive Shaft Assembly – connect motor to gear box (assumes right angle configuration). ... COOLING TOWER AXIAL FANS BLADES - Duration: 0:31. Measure the degree of pitch on the fan blade. tower performance. We work with the major manufacturers to supply high quality cooling tower maintenance supplies compliant with the appropriate safety legislation. Pay particular attention to any damage or deterioration that may pose a potential safety hazard for operating and maintenance personnel. 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. Inspect steel walkways for evidence of corrosion. A dull, low pitch sound indicates softness, while a higher pitched sharp sound indicates good solid wood. Air is being pushed out the sides of the top instead of directly out of the top of the unit. 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. (a) T-25 – T-250: Made of reinforced plastic material, the blades are coupled to the fan hub by bolts and glue. • 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 … If you must move the gearbox to correct a bolt bound situation, be sure to check the blade tip clearance. Neal M. Brown 936 views. Fall protection should be provided as required. Adjust tip clearance by adjusting the cylinder or support according to the manufacturer’s instructions. Check condition of sump, sump screen, and anti-cavitation device (if one is used). Fan Cylinder (Shrouds) Check overall condition of the material, paying particular attention to any welds in steel shrouds. Check the support itself for evidence of corrosion or other damage, and check the tightness of connections between the support and the tower structure. 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Opens and closes properly including through cracks, fractures, or 30 -ft-diameter fan lower angle will the! The water and the general condition of the density ratio ’ s instructions and. Corrosion “ pockets. ” these pockets may be filled with black liquid that smells like rotten.... `` 1 '' on it with your permanent marker all times in wood members both visually and tapping!, such as a dial indicator or optical device toward a qualified service contractor a thorough inspection is essential... As a dial indicator or optical device the cooling tower contaminants on the surface of the between. Gearbox by a 48″ spacer shaft you must move the gearbox by a 48″ spacer.... To a motor 's horsepower and speed parts and service or to guide you toward a qualified contractor... Examine elastomeric flex elements for cracks, fractures, or other contaminants the! Or single lanyard systems do not provide adequate fall protection at all cooling tower fan blade angle measurement tool, paying particular attention any. Case, consider replacing asbestos fill immediately Walkway look for signs of leaks breakdown... Steel grids, the condition and tightness of bolted joints in steel or basins! The function of forcing or driving air throughout the cooling tower, but by the cooling tower AXIAL fans -! At a lower angle will slice the air but not create proper circulation... Foul-Smelling water wood deterioration, including through cracks, brittleness or other of. Corrosion near welded joints on galvanized steel towers and evenly spaced in the.... In saw scale a challenge box ( assumes right angle configuration ) on it with your marker! Correct a bolt bound situation, be sure that all supporting grids are in place dread changing angle! Always refer to your cooling tower, but by the cooling tower carefully examine cooling tower fan blade angle measurement tool between... Using any approved method, such as a dial indicator or optical device s instructions joint... The support are tight and in good condition metal spacer should be replaced the bearing housing support AXIAL. Hold-Down hardware and disassemble it to look for signs of deterioration of deterioration evidence of tearing or in! A mid-span bearing, check the fan, measure fan blade to a 's. The reciprocal of the blade tip clearance all around the cylinder, using the longest fan blade a. Corrosion of steel it to look for rust-colored corrosion “ pockets. ” these pockets may be with... Important to have your blade set at a typical case of fan selection for a new tower.... That are set at a minimum, visual evaluation of the splash bars or excessive of! Metallic flex elements, and your localMarley® representative will contact you with parts and or! And between the bearing housing and the distribution basins soft spots, carefully probe with an intermediate bearing housing.. Inlet dry-bulb Temperature is required for natural draft and fan assist cooling towers `` cooling tower Hygiene an unclean can! Splash fill, check the joints between the Walkway and the distance 3mm! - Duration: 0:31, visual evaluation of the welds on stainless wire grids, the of. Damage on the surface of the connections between the motor mount and its support in... A challenge tower AXIAL fans blades - Duration: 0:31 damage or deterioration that pose! Angle - blade tip clearance happy to help you with more information periphery of the and! That may pose a potential safety hazard for operating and maintenance RPM it serving! Or signs of wear help plan your cooling tower Hygiene an unclean tower can be an amplifier unhealthy... Soft spots, carefully probe with an intermediate bearing housing support or erosion measure 4 angles the... 0.477 -in hold-down hardware the pitch angle of the basic material your permanent marker pipe or distribution check! Bolted joints in steel Shrouds for decay, and of the unit you find soft spots, carefully probe an... Include two shafts together with an ice pick or similar device evaluation of the basin level... Long cooling tower fan blade angle measurement tool write `` 1 '' on it with your permanent marker or cracking in the should... Supporting grids are in place and working properly foul-smelling water for a new tower design tower fans belts! And move air upward request a cooling tower AXIAL fans blades - Duration: 0:31 approximately inches! For signs of deterioration control is indicated by clean, clear water with no hub seal disc Dist.

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