Swamp coolers are a popular and cost-effective way to cool homes, especially in dry climates. However, over time, the metal tray that holds the water can become rusted, leading to leaks and inefficient cooling. In this comprehensive guide, we’ll walk you through the step-by-step process of fixing a rusted swamp cooler tray, ensuring your cooling system operates at its best.
Preparation: Removing Rust and Debris
The first step in fixing a rusted swamp cooler tray is to thoroughly clean and prepare the surface. Begin by removing any silicone sealant used to patch the pan, as paint and tape will not adhere to it. Next, give the pan a thorough wash using a pressure washer or a high-pressure nozzle on a hose to strip away any debris, dirt, and loose paint.
Once the pan is clean and dry, use a hand scraper or a cordless oscillating multitool with a scraper blade to remove any loose paint and rust spots. For tougher areas, use sandpaper or a wire brush to ensure all rust and dirt are removed. This step is crucial, as it will provide a clean, smooth surface for the subsequent treatments.
Applying Paint
After the preparation step, it’s time to apply a high-quality interior/exterior spray paint that is suitable for metal surfaces. Make sure to cover all the rusted areas and any peeling or flaking paint. Apply the paint in thin, even coats, allowing each coat to dry completely before adding the next. Typically, two to three coats will provide adequate coverage and protection.
When selecting a spray paint, look for options that are specifically formulated for metal surfaces and can withstand the harsh outdoor conditions that a swamp cooler tray is exposed to. Some recommended options include Rust-Oleum Painter’s Touch 2X Ultra Cover, Krylon Fusion for Plastic, and Rust-Oleum Stops Rust.
Applying Patch and Seal Tape
If there are any holes or leaks in the pan, the next step is to use a high-quality patch and seal tape to cover them. Look for a waterproof tape, such as Gorilla Waterproof Patch & Seal Tape, that is designed to create a durable, long-lasting seal.
Carefully measure the size of the holes or cracks and cut the tape to fit, ensuring it overlaps the edges by at least 1 inch on all sides. Press the tape firmly onto the surface, using a roller or your fingers, to ensure a tight, secure seal.
Applying Rubberized Coating
To provide an extra layer of protection against rust and leaks, apply a rubberized coating to the entire surface of the pan. A product like Flex Seal Liquid Rubber Sealant Coating is an excellent choice, as it creates a waterproof barrier that can withstand the harsh outdoor conditions.
Apply the rubberized coating in thin, even layers, following the manufacturer’s instructions for drying time between coats. Typically, two to three coats will provide the best results. This step will help prevent future rust and leaks, ensuring the longevity of your swamp cooler.
Optional Tune-Ups
While repairing the rusted tray is the primary focus, it’s also a good idea to consider replacing any worn-out components in your swamp cooler. This includes the motor/fan V-belt and the Aspen Cooler Pads.
The motor/fan V-belt is responsible for powering the fan, and if it’s worn or cracked, it can affect the efficiency of your swamp cooler. Measure the existing belt to ensure you get the correct replacement, which can be found on Amazon or at your local hardware store.
The Aspen Cooler Pads are the moist media that helps cool the air in your swamp cooler. Over time, these pads can become clogged with mineral deposits or simply wear out, reducing the cooling capacity of your system. Replacing the pads can significantly improve the performance of your swamp cooler.
Conclusion
By following these steps, you can effectively fix a rusted swamp cooler tray and prevent future issues. Remember to regularly maintain and clean your swamp cooler to ensure its longevity and efficiency. With the right tools and materials, you can tackle this DIY project and keep your home cool and comfortable all season long.