Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
Applications & Uses
- Markets
- Application Area
- Application Method
- Cure Method
- Recommended Uses
Heresite P-413 is a high performance coating used principally for heat transfer components and parts — especially air conditioning and refrigeration systems that operate in moderate to severely corrosive environments, including both coastal and/or industrial applications. This phenolic epoxy has an advantage of dense cross linking and are therefore highly corrosion resistant even when applied as a very thin film.
- Thinners and Cleanup
Recommended use of Heresite S-275.
- Coverage
Theoretical coverage is 800 square feet per gallon per dry mil. Coverage rates are estimates and make no allowance for material loss. Actual rates will vary dependent on application method, surfaces, etc.
- Surface Preparation
- All surfaces must be clean, sound, and free of any oils, dirt, grease, wax and any other contamination that may interfere with coating adhesion
- In general, the surface should be cleaned by solvent or a cleaner at elevated temperature followed by a clean water rinse
- Rinse water shall have a conductivity of lower than 500 microsiemens and a neutral pH (7.0 – 8.0)
- All surfaces must be dried prior to application of coating
- In cases where there is a large amount of contamination or heat treated steel, a commercial blast is acceptable in accordance with NACE #3 or SSPC-SP-6-63 specifications
- Surface profile or anchor pattern shall be 20 – 25% of the recommended dry film thickness
- Thinning
- Reduce P-413 with S-275 solvent to 15 – 17 seconds on ISO Dip 3 mm Mini Cup (13-13.5 seconds for spray), This requires approximately a 1:1 dilution by volume
- The amount of thinner required is dependent upon temperature, ventilation, humidity, application type and desired film thickness
- Application
Immersion Application:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Consult Heresite for tank and pump recommendations
- Ensure as the part is prepared for immersion, one will have a low point for drainage
- Immerse the cleaned part for 15 seconds in the reduced P-413
- Upon removal of the part from the coating, apply light air pressure (up to 60 psi) using an Air Knife or similar device to spread the air flow
- Using the compressed air, remove excess coating
- Minimal brushing should be required
- Air dry a minimum of 15 minutes with ventilation prior to introducing heat
- Typically, a two coat immersion process is required to achieve 1.0 to 1.5 mil DFT
- An intermediate bake is required between coats — see baking schedule
- It may be deemed desirable to apply a final esthetic spray. This can be accomplished immediately after the final immersion is accomplished and prior to final bake
- During immersion application, the viscosity must be maintained and monitored
- It is recommended that the viscosity be checked every hour to ensure compliance with the specification of 15 – 17 seconds
- Additional solvent and coating can be added to adjust viscosity as needed
Spray Application for Final Esthetic Spray:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Use standard production type spray equipment (conventional, HVLP, airless, etc.)
- Spray viscosity will be dependent on type of equipment being used
- It has been seen that spraying at immersion viscosity is very effective
- Spray equipment: always flush spray equipment with solvent to clean prior to applying coating
- Air supply must be uncontaminated. Adjust air pressure to approximately 50 pounds at the gun and provide 15–20 pounds at pressure pot
- Adjust spray gun by first opening liquid valve and then adjust air valve to give approximately an 8"–12" fan, holding gun perpendicular to the surface at a distance of 12"
- Apply a mist bonding pass
- Allow to flash off for approximately a minute, but not long enough to allow film to completely dry
- Apply 3–4 crisscross multi-passes maintaining a wet appearing film
- Air dry a minimum of 15 minutes with ventilation prior to introducing heat
- Typically, a one coat process is required to achieve 0.5 to 1.0 mil DFT
Spray Application for Higher Film Build — 4–6 mil:
- Do not apply if temperature is less than 5°F above dew point, or if temperature is below 45°F
- Use standard production type spray equipment (conventional, HVLP, airless, etc.)
- Spray viscosity will be dependent on type of equipment being used. It has been seen that spraying at immersion viscosity is very effective (13-13.5 seconds ISO Dip 3 mm Mini)
- Spray equipment: always flush spray equipment with solvent to clean prior to applying coating
- Air supply must be uncontaminated. Adjust air pressure to approximately 50 pounds at the gun and provide 15–20 pounds at pressure pot. Adjust spray gun by first opening liquid valve and then adjust air valve to give approximately an 8"–12" fan, holding gun perpendicular to the surface at a distance of 12"
- Apply a mist bonding pass
- Allow to flash off for approximately a minute, but not long enough to allow film to completely dry
- Apply 3–4 crisscross multi-passes maintaining a wet appearing film. Allow a minimum of 10 minutes to allow the slow solvents to evaporate. Then apply another 2–3 crisscross multi-passes
- Air dry a minimum of 15 minutes with ventilation prior to introducing heat
- Intermediate bake at 130°C (metal temperature) for a minimum of 10 minutes
- Typically, a two to three coat process is required to achieve 4.0 to 6.0 mil DFT
- Bake Schedule
Intermediate Bake:
- 90°C (metal temperature) for a minimum of 10 minutes
- To decrease the bake time, a maximum temperature of 130°C may be used
Final Bake:
- “Normal” Bake:
- 90°C (metal temperature) held for 10 minutes, then increased to 160°C. 160°C (metal temperature) held for 15 minutes, then increased to 190°C. 190°C (metal temperature) held for 45 minutes
- “Soft Solder” Bake:
- 90°C (metal temperature) held for 10 minutes, then increased to 160°C. 160°C (metal temperature) held for 130 minutes
- 90°C (metal temperature) for a minimum of 10 minutes
- Cleaning Frequency
At a minimum, coils should be inspected and cleaned at least once per year. In extreme environments, where the coils are exposed to high concentrations of salt air (within 25 miles of any seacoast), or where they are installed near engine exhausts, plumbing or manufacturing vents, or regularly exposed to corrosive chemicals, you may need to clean coils more often, up to 4 times per year.
- Cleaning Process
- Turn off electrical power to the unit using lock-out system
- Flush the coil with water to rinse off loose residue. Allow the water to soak for 10–20 minutes to loosen surface residue
- Flush the coil thoroughly with any mild liquid detergent and warm water (~100°F) until all signs of residue are eliminated. If harsher cleaners are required for your environment, please contact Heresite for advice
- Rinse the unit thoroughly with clean water (it should not be brackish or contain excessive dissolved minerals)
- Allow the unit to dry completely prior to turning the electrical power on or returning the unit to service.
- Avoid
- Water under high pressure, such as a high-pressure washer. Fins may fold under high pressure causing the coating to crack
- Abrasive products or processes to scour or remove dirt
- Striking the coil with a tool to dislodge or remove soil or residue
- Corrosive, caustic or alkaline cleaners (with a pH 5.5 - 8.5) as these may permanently damage the coating and void the warranty
Regulatory & Compliance
- Regulatory & Compliance
- Meets FDA 175.300 for indirect food contact
- Meets MIL Spec: MIL-C-18467, MIL-E-480 and MIL-STD-883 Method 1101
- Meets Honeywell MC 7200-01 and GE F50T17 specidications
- NSF Certified – ANSI 51 Certification of Coatings for Food Zone – Non Contact
Technical Details & Test Data
- Chemical Resistance
P-413 is chemically resistant to a wide range of acids, solvents, and inorganic salts.
Safety & Health
- Caution
- Contains flammable solvents
- Keep away from sparks and open Flames
- In confined areas workers must wear fresh air line Respirators
- Persons should wear gloves or use protective cream
- All Electrical equipment and installations should be made and grounded In accordance with the national electrical code
- In areas where Explosion hazards exist, workmers should be required to use Nonferrous tools and to wear conductive and nonsparking shoes
Packaging & Availability
- Packaging Type
- Packaging
P-413 is available in one gallon, five gallon a nd 54 gallon drum quantities.
Storage & Handling
- Storage Conditions
- Coating should not be stored longer than 6 monthS
- Coating should be stored in a clean, dry environment at 50°F – 75°F
- Keep out of direct sunlight
- Avoid excessive heat and keep from freezing