Testing Capabilities. Worldwide Designers & Manufacturers of Air Moving Equipment

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1 Testing Capabilities Twin Twin City City Fan Fan Companies, Companies, Ltd. Ltd. Worldwide Designers & Manufacturers of Air Moving Equipment

2 TestingCapabilities Twin City Fan Companies, Ltd. In today s business world, adapting to the needs of customers is more important than ever. That is why Twin City Fan Companies (TCF) has made substantial investments to greatly enhance our comprehensive testing capabilities. These investments include a brand new state-of-the-art testing laboratory located at our worldwide headquarters in Minneapolis, MN; extended testing capabilities for proving performance on fans up to 4,000 HP at the manufacturing plant level; and purchasing cutting edge testing equipment and tools for enhancing our field testing capabilities. The scope of TCF s testing capabilities are very broad and covers a wide spectrum of in-house and onsite testing services. With this level of technology, we can continue to provide our customers with proven solutions to their particular air movement needs while ensuring that they receive the highest quality product for their exact requirements and structural needs. This includes the evaluation of existing systems to optimize performance and reduce power consumption. With the most sophisticated research and development testing laboratories in the industry, only TCF has the collective experience and knowledge needed for tackling the most technically complex testing requirements for the most demanding environments. Laboratory Highlights 10' x 10' shaker table capable of seismic testing up to 10,000 lb fans to meet IBC and OSHPD requirements Max test fan HP up to 4,000 Overspeed vacuum test chamber 73,000 cubic foot reverberant sound room with pure tone qualification and environmental isolation Fabrication capacities for testing new concepts 2 Worldwide Designers & Manufacturers of Air Moving Equipment

3 TwinCityFanCompanies In-House Testing Capabilities TCF R AMCA 204 Balance & Vibration Testing R AMCA 210 Performance Testing R AMCA 250 Jet Fan Thrust Testing R AMCA 260 Induced Flow Testing R AMCA 300 Sound Testing TCF Testing Laboratory R UL 705 Safety Testing R Seismic Testing R High Temperature/Survivability Testing R Mechanical Run Testing R Narrow Band Sound & Vibration Testing R Impact (Bump) & Overspeed Testing R Strain Gage Testing & Analysis Lab Control Station R Modal Analysis Testing R Vibration Analysis & FFT Spectrum Analysis R Scaled Model Testing R Custom / OEM Product Designs On-Site Testing Capabilities AMCA 300 Sound Test Facility R AMCA 203 & 803 Performance Testing R Sound Testing R Vibration Analysis & FFT Spectrum Analysis R Balance & Alignment Testing R Modal Analysis Testing & Operation Deflection Shape (ODS) Analysis 10'x10' Shaker Table for Seismic Testing 3

4 TestingCapabilities Air Performance Testing Test Lab AMCA 210 Chamber & AMCA 260 Induced Flow Testing TCF can provide accurate and repeatable airflow, pressure and power data for fans of all types by performing an airflow measurement test per AMCA standards 210 and 260 using one of three chambers and our AMCA 260 induced flow box located in our test lab. Two of the chambers can accommodate airflow rates up to 65,000 cubic feet per minute and static pressures up to 10 inches of water while the third high pressure chamber can handle airflow rates up to 10,000 cubic feet per minute and static pressures up to 80 inches of water. The AMCA 260 box is capable of testing fans with inlet diameters of 50 inches or smaller. Manufacturing Plant - AMCA 210 Duct Testing When a fan exceeds the size limitations of our chambers, large scale duct testing can be conducted at one of our manufacturing plants. TCF can provide accurate and repeatable results by performing airflow measurement testing per AMCA standard 210 for fans of virtually any size, airflow rate, static pressure and horsepower. This method of testing is very space consuming and requires a very long duct section to be attached to the fan. Manufacturing Plant - Modified AMCA 203 Guidelines Another option for determining the airflow performance of fans that are too large for our chambers is to perform an airflow measurement test using guidelines from AMCA publication 203 at one of our manufacturing plants. For this particular test, fans are installed with ductwork on the outlet and either a bell or duct on the inlet. This results in accurate and repeatable testing and generally requires less space than an AMCA 210 duct test. Note: TCF s test lab, the Brookings, SD manufacturing plant and all testing personnel are NQA certified for the air performance testing of fans used in the nuclear power generation industry. Test Lab Plant On-Site Field Testing - AMCA 203 & 803 When installed fans are required to be tested in the field, they are tested in accordance with the AMCA 203 or 803 testing guidelines. AMCA 203 covers the field testing of all fans in general, whereas AMCA 803 covers the field testing of industrial process fans for the power generation industry. When testing any fan in the field, the overall system must be carefully taken into consideration to accurately determine where the measurements will be taken and if there are any system elements that may negatively affect the fan performance. This testing can lead to huge returns by optimizing existing systems. 4 Worldwide Designers & Manufacturers of Air Moving Equipment

5 TwinCityFanCompanies Sound Performance Testing TCF has added a 73,000 ft 3, reverberant sound room to its test lab for the purpose of conducting sound performance tests per AMCA standard 300. This room is qualified for both broadband and pure tone sound measurement and used for developing fan sound level ratings, troubleshooting noise issues and performing contract testing. For fans that are not able to be tested in our lab, TCF offers a modified AMCA 300 test guideline that can be performed at any of our manufacturing plants. This testing method utilizes principles from the standard that can be used outside of a reverberant sound room. If the fan must be tested in the field, TCF can perform an on-site sound survey. Principles from AMCA 300 can be applied, but special considerations must be made to account for background noise, motor and drive noise and room geometry and construction. Note: TCF s test lab, the Brookings, SD manufacturing plant and all testing personnel are NQA certified for the sound performance testing of fans used in the nuclear power generation industry. Test Lab Plant On-Site Standard balance tests are performed on all complete fan assemblies size permitting. This ensures that there are no noticeable mechanical defects such as rubbing, bearing noise or excessive bearing heat and the vibration levels filtered into the running speed are reported. TCF can also provide vibration reports that include the filtered and overall levels if requested. Customers often require longer run tests to allow the bearing temperatures to stabilize. In order to achieve the stabilized temperatures, TCF will run the fan for two hours and record both the bearing temperatures and bearing vibration levels every 15 minutes or as specified. When specifications call for the detrimental resonant frequencies in a fan assembly to be identified, TCF can perform a coast down test. Coast down testing involves running the fan up to the desired speed and then decelerating slowly. By recording the vibration levels until the fan comes to a stop, the detrimental resonant frequencies can be identified. In addition to these standard tests, TCF is able to test to any vibration specification that a customer requires. Vibration Testing Test Lab Plant On-Site 5

6 TestingCapabilities Seismic Testing For geographical locations susceptible to earthquakes, it is critical to have equipment that is capable of operating after a seismic event. The California Office of Statewide Health Planning & Development (OSHPD) has established a program that requires all equipment used in any health care facility to be pre-approved prior to installation within the state of California. The International Building Code (IBC) has also developed stringent building codes for machinery that will be used in seismically active areas. As a result, TCF has invested in a shake table to simulate earthquakes that meet both IBC and OSHPD requirements. The table is 10' x 10' and is able to shake both floor mounted and ceiling hung units. The maximum payload weight is 10,000 lbs. Test Lab Bump Testing If it is required to determine the natural frequencies of a fan rotor assembly and/or fan structure, TCF offers bump testing to identify these frequencies. Bump testing can be performed on a rotor assembly suspended in air or on a structure mounted to the floor and involves placing accelerometers in strategic locations on the rotor assembly and/or fan structure. Once the accelerometers are affixed to the unit, it is impacted with a mallet and the response is measured using diagnostic equipment to determine the natural frequencies present in the unit. Note: All custom Clarage impellers are bump tested. Test Lab Plant On-Site 6 Worldwide Designers & Manufacturers of Air Moving Equipment

7 TwinCityFanCompanies Operational Modal Testing When troubleshooting fan vibration issues, it is helpful to know the dominant mode shapes that are being excited. A useful tool for doing this is Operation Deflection Shape (ODS) testing. In this method, vibration readings are taken off the fan using accelerometers while it is running. These levels can then be imported into a 3-D model of the fan. By plugging in the actual vibration levels from the fan, it is possible to animate the vibration and see the mode shape that is being excited. This information is effective in determining if the vibration will cause early failures and reduce the life of the fan assembly. Test Lab Plant On-Site Jet Fan Thrust Testing When using jet fans in tunnel ventilation applications, it is critical to ensure that they are capable of quickly ventilating a tunnel in an emergency situation. These fans are specified by the amount of thrust they produce rather than a typical flow vs. pressure specification. TCF is able to test to AMCA standard 250 and ISO standard 13350, which outline the method for testing jet tunnel fans. In these tests, the fan is mounted on a table that is free to move axially on linear bearings. A stationary mounted thrust gauge is then attached to the table to measure the thrust generated by the fan while it is running. TCF has the capability to perform jet fan thrust testing both at our test lab and our manufacturing plant in Pulaski, TN. Test Lab Plant 7

8 TestingCapabilities Overspeed Testing To ensure our customers that a fan will safely operate at the speed that they have specified, TCF has invested in overspeed chambers for our test lab and manufacturing plants. Overspeed testing allows us to run a fan at an increased speed for a given amount of time and prove that it will withstand the customer s specific application. The overspeed chamber in our test lab is capable of handling fan wheels up to 58 inches diameter. For large wheel sizes, the overspeed chamber at our manufacturing plants can accommodate wheel diameters up to 118 inches. Test Lab Plant High Temperature Testing Certain applications require the fans to either be submerged in high temperature air or handle high temperature air in the airstream. That is why TCF has developed a method of testing the survivability of fans up to 900 F (482 C) at our Pulaski, TN manufacturing plant. The test fan is installed in a closed loop system that recirculates the heated air through the fan. This ensures that the mechanical design of the fan is able to stand up to the hot environment. TCF s customers can be certain that when the fan is installed in a high temperature application, it is ready to do the job. Plant 8 Worldwide Designers & Manufacturers of Air Moving Equipment

9 TwinCityFanCompanies Strain Gauge Testing In many high speed applications, customers require strain gauge testing to ensure their fan can tolerate the application in which it is being used. This test involves utilizing a series of strain gauges that are applied in the largest stress concentration areas. By running the fan and measuring the strain, we can determine if there is any deformation in a fan wheel during operation. Strain gauge testing is a specialized procedure that requires careful attention to detail by a skilled and experienced technician. TCF is able to perform strain gauge testing at both our test lab and our manufacturing plant in Pulaski, TN. Test Lab Plant UL 705 Safety Testing For many commercial applications, UL 705 certification is required to ensure that the motor in a power roof ventilator will withstand voltage fluctuations, overheating and a variety of other abnormal circumstances. Our test lab has been accredited by UL to perform these tests on power roof ventilators up to 15 HP using a 60 Hz power source at any voltage between 85V and 635V. The safety testing includes motor winding temperature rise tests at multiple voltages, start/stop testing, halfwave endurance testing (for motors supplied with solid state speed controllers), dielectric testing and rain testing. Test Lab 9

10 TestingCapabilities Custom / OEM Designs TCF has been custom designing products for our entire customer base for decades. By leveraging our expansive engineering and application expertise, we have become experts at tackling the most technically complex and unique applications. This often involves evaluating our customers existing fan technology and, in many cases, requires us to redesign and prototype a fully-customized fan solution. We have worked side-by-side with the most prevalent companies in the world and have earned a reputation for turning ideas into innovative solutions. Our individualized efforts to satisfy the specific needs of our customers is yet another way that we continue to distinguish ourselves in the market. Twin City Fan Companies, Ltd. TCF In-House Custom / OEM Designs R Prototyping R Product Redesign R Evaluation of Existing Products Engineering Services TCF products are engineered and optimized through a series of analyses and validation including Finite Element Analysis (FEA) and Non-Destructive Testing (NDT). These tools are used to verify the structural integrity of our products under various loading conditions, analyze the natural frequencies, as well as analyze torsional natural frequencies. To better serve our customers, we can offer these services upon request. TCF In-House Engineering Services R Finite Element Analysis (FEA) R Non-Destructive Testing (NDT) R Computational Fluid Dynamics (CFD) R System Model Evaluation 10 Worldwide Designers & Manufacturers of Air Moving Equipment

11 TwinCityFanCompanies Having the peace of mind that your fan is installed and operating properly prior to startup is crucial. TCF can offer a wide range of startup services and precision checks including inlet and wheel operational clearances, torque verification, shaft alignment, balance and vibration testing. As part of our standard startup services, TCF field personnel will conduct a variety of inspection checks to ensure the fan is ready for startup all the way from the foundation bolts to the lubrication of the fan. Startup Services We also offer Air Make-Up startup services. Our trained technicians can commission your natural gas fired heating equipment and control system. On-Site Startup Services R Fan Assembly Inspection R Vibration Checks R Coupling & Sheave Laser Alignment R Installation Assistance Keeping existing fans in service as systems change to suit environmental regulations, process enhancements, and energy consumption is an extremely important aspect of our business. We are proficient at applying our engineering experience to make the necessary modifications to existing equipment and can provide complete turnkey solutions for rebuilding and repairing fans in the field. Turnkey Services TCF also has a retrofit program designed to increase the efficiency of large industrial fans that can have paybacks in as little as six months. On-Site Turnkey Services R Installation & Commissioning R Field Repairs/Rebuilds R Duct Work Modification R Motor/Turbine Alignment R Coupling Alignment R Preventive Maintenance R Engineered Retrofits All Brands R Fan Balancing 11

12 Our Mission: To be a quality and highly respected global company in all that we do. To design, manufacture and distribute quality air moving and related equipment for worldwide use that fulfills the wants and needs of the customer at the best value. To provide our customers with a consistently high level of service: - before the order is secured - during its fulfillment - after the product has been delivered To create a partnership with our suppliers, customers, representatives and employees to enable us to continually improve our performance. To enhance and sustain our company culture to ensure it continues to thrive and allows us to develop longstanding relationships that contribute to our success. Twin City Fan Companies, Ltd. Twin City Fan Companies, Ltd Trenton Lane N Minneapolis, MN Phone Fax

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