MasterCool is a line of mobile evaporative coolers used to keep indoor temperatures comfortable when outdoor temperatures are excessive. These types of air coolers are used in home and commercial environments, including outdoor dining and manufacturing settings. An evaporative cooler operates by cooling the air through the evaporation of water, as opposed to the vapor-compression method used in refrigeration and air conditioning. Evaporative cooling is especially effective in hot and dry climates. Regular inspection of a MasterCool mobile cooler can help maintain a comfortable living or working environment.
Check the unit's power source if it fails to start. Reset the breaker and attempt to activate the breaker. If this fails, inspect the power cord for damage. Replace the damaged power cord. If the power cord is undamaged and the breaker has not been tripped, replace the cooler's fuse located behind the service panel.
Clean the water pump if the unit fails to produce sufficiently cool or moist air. Disconnect the cooler from the power supply. Lift the pad frames up and out of the cooler to access the water pump. Remove the water pump. Carefully unsnap the four tabs and separate the base plate from the pump body. Wash the impeller and impeller base with a mild detergent solution, removing all dirt deposits. Rotate the impeller to discharge any obstructive debris. Rinse the impeller and base plate, then reinstall both. Reinstall the water pump into the cooler.
Inspect the water and pads if an unpleasant odor is detected. The water should be periodically replaced to prevent contaminants. The cooling pads should be replaced at least every two years.