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Think of your swamp cooler like a car. It has a motor and runs off a certain type of energy. In the same way that you change your car's oil, spark plugs, recharge the battery, etc, these HVAC motors also need regular attention to run efficiently and effectively. Below are some maintenance for your systems.
Evaporative Cooler Efficiency
Swamp Cooler Maintenance
Before summer begins, removes the panels and clean out any debris in the water pan at the bottom. This will ensure that clean water is getting to the pads and not getting gummed up by leaves, dust, and debris.
Check the fan belt to see if it has adequate tension. It shouldn't move much more than an inch, and in some cases an inch may be too much. If it is visibly sagging then it definitely needs replaced. If you can't tell whether or not it is too loose, click here to get matched to an air conditioning contractor.
Lubricate the blower assembly bearing and the motor if it has an oil receptacle with the appropriate oil.
Make sure the cooler pads are in good shape. If they look worn or ratty, replace them new.
Turn on the cooler motor and pump to test if the cooler pads are getting sated evenly. Check for any insults to the casement or tray's integrity that could cause a leak. If cracks or holes exists, call an air conditioning repairman.
Summer Swamp Cooler Checkups
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Winterize Swamp Cooler
As soon as you are certain that you won't need your evaporative cooler, you need to winterize it. Much like spring preparation, you need to clean the buildup of mineral deposits so that won't harden over the winter and become hard to remove.
Clean out the tray at the bottom of the cooler, and drain the water completely.
To prevent freezing of the cooler's water line, disconnect the water line from the cooler and blow out the water. This is the most important winterizing step. If you can only bring yourself to do one thing, do this.