Perform a Mid-Summer Check-Up of Your Swamp Cooler
Keep your home cooler with a swamp cooler that is running at maximum efficiency. Perform the following check-ups to ensure the rest of your summer is cool and comfortable.
Check the water level. The water level in the bottom tray should be about one inch below the top of the tray. It should be below the top of the overflow pipe. If the water level is too high or too low, adjust the float arm.
Make sure your float valve is working. If the valve sticks, the water will run continuously, causing water to overflow the tray and be wasted. Try adjusting the float arm. If that doesn't fix the problem, install a new float valve or call a cooler specialist.
Check all other working parts, including the pump, motor and fan belt. If needed, lubricate the blower assembly bearing and the motor if it has an oil receptacle.
Check the condition of the cooler pads. The cleaner the pads, the more efficient the cooler. If they have a heavy accumulation of mineral deposits or if they look worn, replace them.
Some coolers have a "bleed-off valve" to drain the recirculating water to prevent excessive mineral buildup. Make sure the valve is adjusted properly to drain no more water than is necessary. Check your manufacturer's recommendations for best results.