Greenheck | Building Value in Air
Owner's Manual for GREENHECK models including: FA-132-24 Commercial and Industrial Fans, FA-132-24, Commercial and Industrial Fans, Industrial Fans, Fans
Centrifugal Upblast Exhaust Fans | Greenheck
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DocumentDocumentFan Application FA/132-24 A technical bulletin for engineers, contractors and students in the air movement and control industry Coatings Application Guide - Commercial and Industrial Fans Greenheck offers customers a wide variety of coatings for specific applications. We have developed several coating formulations meeting the requirements for 98% of all HVAC applications, although the information in this paper primarily addresses commercial and industrial fan products. These coating formulations have been thoroughly tested to assure they meet the demands our products see in the field. Coating Types Coatings have many uses. Some protect; others provide aesthetic qualities, while some coatings offer both protection and aesthetics. Greenheck uses electrostatically applied thermosetting powder coatings and traditional liquid paint coatings. Both coating types have benefits, however, powder coatings offer more advantages over liquid "enamel" coatings in most applications. Greenheck has standardized the use of powder coatings on the majority of its products. Powder Coating Benefits · Environmentally friendly paint process - Eliminates hazardous volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) into the atmosphere - Limited amount of inert waste produced (safe for landfill disposal) · Cost effective · Ability to produce high performance at low film builds · Consistent film builds throughout product · Improved edge coverage · Robust integrity immediately after curing "thermoset" (by comparison, liquid coatings generally remain soft for some time after application, creating the potential for damage during transport/handling) · Dual purpose - Can provide both a functional protective coating and aesthetic appearance · Can be formulated to meet AAMA specifications Coating Types Used by Greenheck Industrial Epoxies Industrial epoxy coatings have use as a base coat under a top coat or as a stand-alone functional coating. Its primary purpose is corrosive protection. Epoxies withstand harsh chemical exposures. · Excellent chemical resistance · Excellent mechanical properties · Not recommended without topcoat when exposed to UV light - Any exposure will subject the coating to premature chalking · Continuous-duty* service temperatures up to 250° F However, this coating type performs best in applications that are indoors or outside with no ultraviolet (UV) exposure from the sun. UV exposure quickly breaks down the epoxy coating, leaving the product vulnerable for corrosion. High-Temperature Coating This coating is available in both high temperature powder and liquid paint. These coatings are suitable for continuous-duty use at elevated temperatures. · High-temperature powder paint (silver) Rated for continuous duty* up to 500° F · High-temperature liquid paint (silver) Rated for continuous duty* up to 850° F · Good chemical resistance · Good mechanical properties P.O. Box 410 · Schofield, WI 54476 · 715.359.6171 · greenheck.com · Copyright © 2024 Greenheck Fan Corp. Greenheck Product Application Guide Permatector PermatectorTM is a Greenheck trademarked protective coating. The base resin of this coating is polyester, formulated to provide a solid coating that resists abrasion, impact, UV and chemical resistance in a visually appealing package. Permatector is available in both liquid and powder formulations, but most often applied as a powder because of the benefits offered by an electrostatic coating. This coating is only available for applications as a single-coat in Greenheck Concrete Gray. · Good chemical and corrosion resistance · Good mechanical properties · Very good gloss and color retention properties · Continuous-duty* service temperatures up to 250° F Hi-Pro Polyester Hi-Pro Polyester is another Greenheck coating specifically formulated to offer improved performance in abrasion, impact, UV and chemical resistance. This coating represents a class of coatings called super durables. Hi-Pro is superior to Permatector in UV resistance significantly reducing color / fade and chalking. As coatings fade they lose their ability to protect. This formulation has also been modified to improve edge protection where coatings are the weakest due to reduced thickness. It is a high-quality coating because of its UV and color fade resistance. · Very good chemical and corrosion resistance · Good mechanical properties · Improved edge protection · Superior gloss and color retention · Continuous-duty* service temperatures up to 250° F Another benefit of the Hi-Pro coating is its improved paint coating coverage on the edges where most coatings are the weakest because of the nature of how paint covers edges. (Figure 1) Typical Paint Application Base Metal Coating thinner at corners Figure 1 New Super Durable Hi Pro LabCoatTM LabCoat is Greenheck's premium coating. The two-part process (Figure 2) includes a base coat of our best industrial epoxy with the premium Super Durable Hi-Pro applied as a topcoat. LabCoat will withstand the harshest coastal environments while offering superior chemical resistance. · Excellent chemical resistance · Superior corrosion resistance · Excellent edge protection · Superior gloss and color retention · Continuous-duty* service temperatures of the system up to 275° F NOTE: Base coat epoxy will withstand higher service temperatures as noted for epoxy. Two Coat Process Hi-Pro Polyester Topcoat 4-6 mils Total Hi Performance Epoxy Primer Advanced Surface Preparation Base Steel Figure 2 LabCoat's two-step process includes advanced surface preparation followed by a layer of industrial epoxy and one of Hi-Pro Polyester. *Continuous duty is defined as the ability of the coating to withstand the specified temperature without loss of adhesion to the substrate over a 24-hour period. NOTE: All coatings experience changes at higher temperatures. These changes may affect the coating's performance as temperature increases beyond set limits. High temperatures may permanently affect some qualities without losing all performance characteristics. This is completely dependent on the duty cycle of the elevated temperature and accurate predictions on quality are not possible. Base Metal Coating designed to add corner protection Page 2 · Fan Application FA/132-24 Greenheck Product Application Guide Typical Cleaning / Pretreatment Process Cleaning Stage Rinse Conversion Coating Stage Final Rinse Sealer Typical impacts of temperature to coating performance may include, but are not limited to: · Color change · Loss of gloss (Most applications never go beyond this point and only affect the aesthetics) · Loss of mechanical properties · Loss of adhesion Greenheck uses the highest quality ingredients in its paint coatings. Third-party laboratories including Express Testing, Atlas/Ametek and Element Labs test and verify the quality of these coatings. These coatings undergo a battery of tests prior to approval. Information on specific tests used is available by contacting Greenheck. Protection It's not all about the Paint! No coating will perform as expected without a thorough cleaning of the base material or metal first. Proper cleaning promotes appearance, adhesion and corrosion protection. Every Greenheck product goes through a multi-step wash process (Figure 3) to achieve the performance required. · The first step removes all dirt and oils on the surface of the metal. This step removes surface contaminants and prepares it for the next step. · The next critical step is the application of a "conversion coating." This conversion coating forms a micro-thin crystalline layer that promotes adhesion and resists corrosion creep under the paint surface. · The final step is an application of a non-chrome sealer that assists in paint adhesion and corrosion resistance. Paint Conversion Coating & Non-Chrome Sealer Metal Figure 3 Paint Application Questionnaire 1. Is this an outdoor application? 2. Is the jobsite less than 10 miles from a body of salt water (coastal areas)? a. If yes approximately how many miles? 3. Will the airstream of the unit contain particulates? a. If yes what type of particulates and the approximate concentration. 4. What temperature will the airstream see? 5. Are there chemicals in the airstream? a. If yes what type of chemical will it be exposed to? i. Include a SDS safety data sheet. b. What is the approximate concentration in the airstream--low, medium, or high? c. How often will the fan be operating? Provide any additional information regarding the project. Help us help you! Page 3 · Fan Application FA/132-24 Greenheck Product Application Guide Chemical Resistance Chart To understand how every chemical would impact our coatings would not be plausible so we have tested some common industry chemicals listed below. Testing involves applying a drop of the concentrated chemistry directly on the surface and observing the results. This is not how our products experience chemical exposure in the field. Our products entrain large volumes of air reducing chemical exposure by design, so the coatings perform well in most applications. To extend the performance of a coating, a two-coat system always is recommended in extreme-duty applications such as one would see in coastal / chemical applications. Stainless steel or fiberglass ductwork also are good indicators to use an extreme-duty coating. NOTE: This chart should only serve as a guide when it comes to chemical resistance. The following factors will decrease a coating's ability to resist chemical attack. · Exposure time > 8 hours daily · Elevated temperatures > 125°F · Airstream moist with chemical concentrate · Location < 10 miles to coastal or marine environments Available Coatings: Resistance to Corrosive: 1. PermatectorTM 2. Hi-Pro Polyester 4. High Temperature Silver 5. Industrial Epoxy 3. Hi-Pro-Z (LabCoatTM) 6. High Temperature Resistance to Corrosive: E = Excellent F = Fair G = Good P = Poor NR = Not Recommended ND = No Data Available Alkalis (Bases) 123456 Ammonium Hydroxide G E E G E NR Calcium Hydroxide G E E E E NR Calcium Oxide (Caustic Lime) G E E E E NR Potassium Hydroxide (Caustic Potash, Coal Dust) G E E G E NR Sodium Hydroxide (Caustic Soda) G E E G E NR Oxidizing Agents Bleaching Compounds Calcium Hypochlorite Chlorine Hydrogen Peroxide Hypochlorites Sulfur Dioxide 123456 G G G E G NR G G G E E NR F E E ND E NR G E E ND E ND G G G G E NR ND ND ND E E NR Page 4 · Fan Application FA/132-24 Greenheck Product Application Guide Available Coatings:, continued Resistance to Corrosive: 1. PermatectorTM 2. Hi-Pro Polyester 3. Hi-Pro-Z (LabCoatTM) 4. High Temperature Silver 5. Industrial Epoxy 6. High Temperature Resistance to Corrosive: E = Excellent F = Fair G = Good P = Poor NR = Not Recommended ND = No Data Available Acids Acetic Boric Carbolic (Phenol) Chloric Chloracetic Chromic Citric Acid Ethyl Sulfuric Formic Hydrochloric (Huriatic) Hydrocyanic Hydrofluoric Hypochlorous Lactic Napthenic Nitric Nitrous Oleic Oxalic Perchloric Phosphoric Picric Stearic Sulfuric Sulfurous Tannic Acid Tartaric 123456 G E E G E NR GEEGEF G G G NR G ND G G G ND G NR G G G G E NR G G G NR G NR ND ND ND ND ND NR G G G ND G NR G E E NR E NR G E E G E NR ND ND ND ND ND NR P F F NR ND NR G G G E E NR G E E E E NR G G G G G ND G G G G G NR ND ND ND ND G NR ND ND ND G E ND G E E G E NR ND ND ND ND E NR G E E G E NR ND ND ND E E ND GEEEEG G G G NR E NR ND ND ND E E NR EEEEEP G E E E E NR Salts 123456 Aluminum Chloride G E E E E ND Aluminum Fluoride G E E ND E ND Aluminum Sulfate G E E E E ND Ammonium Chloride G E E G E NR Ammonium Nitrate G E E E E ND Ammonium Sulfide G E E E E ND Calcium Chloride G E E E E NR Calcium Cyanamide G E E E E ND Calcium Sulfate G E E G E ND Cupric Nitrate G E E E E ND Cupric Sulfate G E E E E NR Ferric Chloride G E E G E NR Ferric Sulfate G E E E E ND Ferrous Sulfate G E E E E ND Lithium Chloride G ND ND E E ND Magnesium Chloride G E E E E ND Magnesium Sulfate G E E E E ND Manganese Chloride G E E E E ND Manganese Sulfate G E E E E ND Potassium Carbonate (Potash) G E E G E NR Potassium Chlorate G E E E E ND Potassium Chloride G E E E E ND Potassium Nitrate G E E E E ND Potassium Sulfate G E E E E ND Potassium Sulfide G E E E E ND Salt Spray GEEEEF Sodium Carbonate G E E ND E ND Sodium Chloride GEEEEF Sodium Nitrate G E E E E ND Trisodium Phosphate G E E ND E ND Zinc Chloride G E E ND E ND Zinc Sulfate G E E ND E ND Page 5 · Fan Application FA/132-24 Greenheck Product Application Guide Available Coating, continued Resistance to Corrosive: 1. PermatectorTM 2. Hi-Pro Polyester 3. Hi-Pro-Z (LabCoatTM) 4. High Temperature Silver 5. Industrial Epoxy 6. High Temperature Resistance to Corrosive: E = Excellent F = Fair G = Good P = Poor NR = Not Recommended ND = No Data Available Solvents Acetaldehyde Acetone Alcohols Aldehyde Benzene and Methyl Alcohol Mix Benzol Butanol (Butyl Acetate) Carbon Disulfide Carbon Tetrachloride Ethanol (Ethyl Alcohol) Ethyl Acetate Ethylene Glycol Formaldehyde Gasoline Glycerol (Glycerin) Jet Fuel Kerosene Ketones Methanol (Methyl Alcohol) Methyl Acetate Methyl Ethyl Ketone (MEK) Methyl Isobutyl Kentone Naphthalene Sulfuric Chloride Toluol (Toluene) Trichloroethylene Turpentine Water, Fresh Xylol (Xylene) 123456 ND ND ND ND ND ND GGGFGG GEEEEG F G G NR G ND GGGGEG GGGG E P G E E NR E G ND ND ND NR ND ND P F F ND E ND GGGGEG G G G NR E G G E E ND E G F G G ND E ND GGGGEG G G G ND E ND F G G ND E G GGG E E G G G G NR G G G G G ND E G G G G NR E G G G G F G ND GGGFGP G G G ND E ND ND ND ND ND ND NR GEEGEG F F F ND E G G E E NR E G EEEEEF GEEGEG Miscellaneous Abrasion Ammonium Gas Animal Oils Carbon Dioxide Carbon Monoxide Creosol Detergents Ether Fish Oil Hydrogen Sulfide Methane Nitrogen Fertilizer Nitrogen Oxides Oils Outdoor (Except Marine) Outdoor (Marine) Ozone Phosgene (Carbonyl Chloride) Phosphorous Trichloride Propane Saturated Steam Vapor Sunlight 1234 GEEG EEEG EEEG EEEE EEEE G E E NR G E E ND G G G NR E E E ND ND G G G E E E ND EEEE EEEE EEEE GEEG GGE F ND ND ND ND ND ND ND ND ND ND ND ND E E E ND ND ND ND ND GEEE 56 EF G ND E ND EE E ND E ND E ND EG EG G ND EG E NR E ND E ND FF FF E ND ND ND ND NR EG E NR NR G Page 6 · Fan Application FA/132-24 Greenheck Product Application Guide An Explanation of B117 Salt Spray Performance What is the B117 Salt Spray Performance Test? The B117 Salt Spray Performance test is an ASTM standard describing parameters for proper setup of a salt spray chamber for accelerated corrosion testing. This standard is the most widely recognized corrosion standard dating back to 1939. The standard, however, does not address the quality of the outcome. The test only verifies how a product is tested and how long it was tested. Other ASTM standards such as D1654, D714 and D610 accurately measure the results for criteria such as quality or grade. Another part of the testing allows manufacturers to choose a single scribe, "X" scribe or no scribe the panel depending on how they prefer to rate their coating. This option changes the outcome of the results. Many in the industry confuse the value of this test. The B117 Salt Spray Performance does not indicate the performance of the product tested or the extent of rusting/corrosion during that period; only the process used for testing. What is the purpose of this test? Manufacturers need ways to test their processes and products in an accelerated timeframe. They cannot wait for ten years to determine if a better process or product is required. What is the problem with B117 testing? The B117 Salt Spray Performance test is comparative not correlative. Predicting how well a coating performs in the field is difficult using this test by itself. For example, consider three factories. Each one has the same fan product with the same coating finish. One is in Wisconsin and two are located in Florida, several blocks from each other. Two factories (one in Wisconsin and one in Florida) exhaust factory air. The second factory in Florida uses its fan to exhaust acid fumes at elevated temperatures. The finish coating that is the same on each fan will perform differently at each location because of location, application and weather conditions. Why does the industry use it? Change is difficult. Many consider the test as the gold standard. It has been this way for years. Industries such as automotive, farm implements and construction moved away from B117 to use tests more relevant to their products. Our industry is slow to make the change. Why doesn't Greenheck create a better test? Greenheck does use other tests for corrosion and perform these as needed. However, these do not help when specifications call for B117 testing. Therefore, we provide that information and when possible, share other relevant test information. The images marked #11, #4 and #14 show the results of three different B117 1000-hour salt spray test examples, but do not indicate the success or failure of the coatings tested. Why do manufacturers still use the B117 standard? B117 is an easy test to apply. It is fast and inexpensive to perform. The test is a helpful, comparative test when testing different coating formulations. The test also is helpful for manufacturers to benchmark process performance. Greenheck routinely salt spray tests all paint processes to control our quality. Page 7 · Fan Application FA/132-24 Greenheck Product Application Guide Summary. Performance standards are beneficial tools if all parties understand the standard and its use. The most important consideration is having a good understanding of the application and applying the proper coating. Greenheck understands and has coatings that perform well in most applications. We also can deliver other specialty coatings for unique applications. Powder paint performance is more than the paint. The application is equally important, and we make sure the application process performs at a high level all the time. Tips to Prolong Coatings Integrity The coating on our products provide the end user years of protection and beauty. Some additional preventative maintenance will extend the integrity of the coating. · Wipe down flat surfaces that may collect chips or shavings resulting from installation. · Check for areas of corrosion annually and repair with a Greenheck touch-up kit. Knicks and scratches from the installation, maintenance or wind abrasion may allow corrosion to start. Touching up these spots will stop further damage. · Wipe down the fan's exterior with a mild detergent and rinse annually. · If the product was subject to road salt during transport, immediately wash off all visible white residue from exterior surfaces. P.O. Box 410 · Schofield, WI 54476 Phone: 715.359.6171 · greenheck.com Copyright © 2024 Greenheck Fan Corp.