| Blygold Specifications |
Blygold SpecificationsRahn Industries, Inc. I. The following specification should be used to specify Blygold PoluAl XT coil coating for a seacoast environment: Specific Blygold® PoluAl XT Engineering SpecificationThe condenser (and/or) evaporator coil shall be coated with Blygold PoluAl XT by a certified licensed applicator. The coating product manufacturer shall be able to document a class 5B result on a Cross Hatch Adhesion Test (ASTM D5339) and the successful completion of accelerated product testing for a minimum 4000 hours in both salt spray (ASTM B117) and acid salt spray (ASTM G85) test. The coating service provider shall also be able to offer a 3-year conditional warranty for the coating applied on finned-tube coils. Blygold PoluAl XT aluminum impregnated polyurethane coil coating shall be applied insuring total penetration and coverage without bridging or significantly affecting the heat transfer ability of the coil. The total dry film thickness of the coating shall be 1 mil (25 microns). The coating shall provide inherent protection against ultra-violet radiation and have a dry temperature resistance from -4BF to 302BF (-20BC to 150BC). II. the following specification should be used for both condenser and evaporator coils of unit installed in aggressive chemical environment, such as wastewater treatment, refinery, or pulp/paper mill. Specification includes cabinets and casings. Blygold® Complete Coating Specification for Condenser & Evaporator Coils, Cooling Circuit, and Casings/Cabinets for Aggressive Chemical Application Condenser/Evaporator Coils & Circuit1. The condenser (and/or) evaporator coil shall be coated with Blygold PoluAl XT by a certified licensed applicator. The coating product manufacturer shall be able to document a class 5B result on a Cross Hatch Adhesion Test (ASTM D5339) and the successful completion of accelerated product testing for a minimum 4000 hours in both salt spray (ASTM B117) and acid salt spray (ASTM G85) test. The coating service provider shall also be able to offer a 3-year conditional warranty for the coating applied on finned-tube coils. Blygold PoluAl XT aluminum impregnated polyurethane coil coating shall be applied insuring total penetration and coverage without bridging or significantly affecting the heat transfer ability of the coil. The total dry film thickness of the coating shall be 1 mil (25 microns). The coating shall provide inherent protection against ultra-violet radiation and have a dry temperature resistance from -4BF to 302BF (-20BC to 150BC). Endplates (tube sheet), Circuiting, and headers including u-bends and all exposed connecting copper in the circuit and compressor(s) shall be first coated with penetrating primer prior to the application of Ameron® PSX 700 Clear topcoat. Casings & Cabinets2. All exterior casing/cabinets are to be coated with Ameron® PSX 700 Clear Coat. Cabinet & Casing is to be coated using following procedure: Ameron® PSX 700 Clear Coat Casing and Cabinet ProcedureThe objective is to coat all exterior sheet metal with a protective coating. (1) Unit is disassembled, condenser fan motor(s) removed, and all exterior wires are pulled back or masked. Disassembly only needs to be to the point that the outside of all exterior panels can be re-coated; controls and indoor blower can remain in the unit. Nothing inside (in the evaporator section) will be coated unless specified. (2) All surfaces are cleaned, either by residue-free solvent wipe-down, or steam cleaner/pressure washer with soap. Care must be taken to not soak or damage insulation on evaporator section panels. Heat (steam cleaner) is usually required to remove the waxy coating on newly galvanized steel. (3a) All bare galvanized exterior surfaces are etched with GalvaPrep SG or equal, to include: compressor/condenser section, base rails (both inside and outside), and the entire underside of the unit. Etched surfaces must be rinsed. Please note that GalvaPrep should also be used (as per this procedure) on the galvanized end plates (u-bends and headers) of condenser and evaporators coils before the application of Ameron® PSX 700 Clear Coat. (3b) all previously painted surfaces are scuff sanded with a Dual Action sander (DA) using 220 to 320-grit abrasive, to break the gloss on the original coating. Support posts and corners with intricate bends must be either hand sanded or carefully prepared by very fine abrasive blast. All of these surfaces shall be cleaned after sanding with a residue-free solvent wipe-down. (4) When all parts are dry, clean, and free of dust, primer is applied to all surfaces. Desired dry film thickness should be 60 microns. (Approximately 2.5 mils) (5) After minimum 12 hours drying time, two coats of Ameron® PSX 700 Clear Coat is applied. There is a minimum 8 hours drying time between coats. Desired dry film thickness should be 80 microns. (Approximately 3.2 mils) (6) When re-assembling, all cabinet screws (exterior sheet metal screws) are replaced with stainless steel sheet metal screws with stainless steel bonded neoprene-sealing washers. III. The following specification is a stand-alone cabinet/casing specification that should be used for aggressive chemical or marine environments, such as offshore, wastewater treatment, refinery, or pulp/paper mill. Blygold® Coating Specification for Casings/Cabinets for Aggressive Marine or Chemical ApplicationCasings & Cabinets1. All exterior casing/cabinets are to be coated with Ameron® PSX 700 Clear Coat. Cabinet & Casing is to be coated using following procedure: Ameron® PSX 700 Clear Coat Casing and Cabinet ProcedureThe objective is to coat all exterior sheet metal with a protective coating. (1) Unit is disassembled, condenser fan motor(s) removed, and all exterior wires are pulled back or masked. Disassembly only needs to be to the point that the outside of all exterior panels can be re-coated; controls and indoor blower can remain in the unit. Nothing inside (in the evaporator section) will be coated unless specified. (2) All surfaces are cleaned, either by residue-free solvent wipe-down, or steam cleaner/pressure washer with soap. Heat (steam cleaner) is usually required to remove the waxy coating on newly galvanized steel. (3a) All bare galvanized exterior surfaces are etched with GalvaPrep SG or equal, to include: compressor/condenser section, base rails (both inside and outside), and the entire underside of the unit. Etched surfaces must be rinsed. Please note that GalvaPrep should also be used (as per this procedure) on the galvanized end plates (u-bends and headers) of condenser and evaporators coils before the application of Ameron® PSX 700 Clear Coat. (3b) All previously painted surfaces are scuff sanded with a Dual Action sander (DA) using 220 to 320-grit abrasive, to break the gloss on the original coating. Support posts and corners with intricate bends must be either hand sanded or carefully prepared by very fine abrasive blast. All of these surfaces shall be cleaned after sanding with a residue-free solvent wipe-down. (4) When all parts are dry, clean, and free of dust, primer is applied to all surfaces. Desired dry film thickness should be 60 microns. (Approximately 2.5 mils) (5) After minimum 12 hours drying time, two coats of Ameron® PSX 700 Clear Coat is applied. There is a minimum 8 hours drying time between coats. Desired dry film thickness should be 80 microns. (Approximately 3.2 mils) (6) When re-assembling, all cabinet screws (exterior sheet metal screws) are replaced with stainless steel sheet metal screws with stainless steel bonded neoprene-sealing washers. IV. The following specification should be used to specify Blygold® PoluAl MB Anti-Microbial coil coating on an evaporator coil: Blygold® PoluAl MB Engineering Specification for Evaporator CoilsThe evaporator coil shall be coated with Blygold® PoluAl MB by a certified licensed applicator. The product application process shall include a chromate-free conversion layer applied to the coil that achieves total coverage and penetration. An aluminum-impregnated polyurethane topcoat containing an effective anti-microbial component shall then be applied that ensures adequate penetration and coverage without bridging or significantly affecting the heat transfer ability of the coil. The total dry film thickness of the topcoat shall be 20 to 25 microns. (0.020 to 0.025 mm) The coating shall provide inherent protection against ultraviolet radiation and be temperature resistant up to 194°F (90°C). V. The following specification should be used to specify Blygold® Hygicoat Anti-Microbial coatings on the drain pan and interior of an air-handling unit: Blygold® Anti-Microbial Coating Specification for the Evaporator Drain Pan & Interior of an AHUDrain Pan and AHU Interior – Evaporator drain pan and all AHU interior surfaces are to be coated with Blygold® Penetrate 2509 Primer & Hygicoat 2000 Anti-Microbial Coating using following procedure: Blygold® Hygicoat 2000 MB Coating ProcedureThe objective is to coat the drain pan and AHU interior with an anti-microbial coating. (1) Unit is disassembled. Disassembly needs to be to the point that all the interior panels can be coated. (2) All surfaces are cleaned, either by residue-free solvent wipe-down, or steam cleaner/pressure washer with soap. Heat (steam cleaner) is usually required to remove the waxy coating on newly galvanized steel. (3a) All bare galvanized exterior surfaces are etched with GalvaPrep SG or equal, including rails, fan, and fan housing (both inside and outside). Etched surfaces must be rinsed. (3b) All previously painted surfaces are scuff sanded with a Dual Action sander (DA) using 220 to 320-grit abrasive, to break the gloss on the original coating. Support posts and corners with intricate bends must be either hand sanded or carefully prepared by very fine abrasive blast. All of these surfaces shall be cleaned after sanding with a residue-free solvent wipe-down. (4) When all parts are dry, clean, and free of dust, primer is applied to all surfaces. Desired dry film thickness should be 60 microns. (Approximately 2.5 mils) (5) After minimum 12 hours drying time, one coat of Blygold® Hygicoat 2000 topcoat is applied. Desired dry film thickness should be 70 microns. (Approximately 2.8 mils) VI. The following specification should be used to specify Blygold® PoluAl MB Anti-Microbial coil coating on an evaporator coil and Blygold® Hygicoat Anti-Microbial coating on the drain pans and interior of an air-handling unit: Blygold® Complete Anti-Microbial Engineering Specification1. The evaporator coil shall be coated with Blygold® PoluAl MB by a certified licensed applicator. The product application process shall include a chromate-free conversion layer applied to the coil that achieves total coverage and penetration. An aluminum-impregnated polyurethane topcoat containing an effective anti-microbial component shall then be applied that ensures adequate penetration and coverage without bridging or significantly affecting the heat transfer ability of the coil. The total dry film thickness of the topcoat shall be 20 to 25 microns. (0.020 to 0.025 mm) The coating shall provide inherent protection against ultraviolet radiation and be temperature resistant up to 194°F (90°C). 2. Drain Pan and AHU Interior – evaporator drain pan and all AHU interior surfaces are to be coated with Blygold® Penetrate 2509 Primer & Hygicoat 2000 Anti-Microbial Coating using following procedure: Blygold® Hygicoat 2000 MB Coating ProcedureThe objective is to coat the evaporator drain pan and AHU interior with an anti-microbial coating. (1) Unit is disassembled. Disassembly needs to be to the point that all the interior panels can be coated. (2) All surfaces are cleaned, either by residue-free solvent wipe-down, or steam cleaner/pressure washer with soap. Heat (steam cleaner) is usually required to remove the waxy coating on newly galvanized steel. (3a) All bare galvanized exterior surfaces are etched with GalvaPrep SG or equal, including rails, fan, and fan housing (both inside and outside). Etched surfaces must be rinsed. (3b) All previously painted surfaces are scuff sanded with a Dual Action sander (DA) using 220 to 320-grit abrasive, to break the gloss on the original coating. Support posts and corners with intricate bends must be either hand sanded or carefully prepared by very fine abrasive blast. All of these surfaces shall be cleaned after sanding with a residue-free solvent wipe-down. (4) When all parts are dry, clean, and free of dust, Blygold® Penetrate 2509 primer is applied to all surfaces. Desired dry film thickness should be 60 microns. (Approximately 2.5 mils) (5) After minimum 12 hours drying time, one coat of Blygold® Hygicoat 2000 topcoat is applied. Desired dry film thickness should be 70 microns. (Approximately 2.8 mils) |