Many property owners now utilise evaporative coolers to regulate the temperatures of their residential or commercial buildings. Evaporative coolers can easily decrease the indoor temperatures even if the doors or windows are open. They also consume less energy than air conditioning units, which consequently provide lower utility expenses. Another great thing about evaporative coolers is that they can remove dust, fumes, bad odours, and other elements, making sure that the property has an improved air quality.

Evaporative coolers are truly helpful. However, if they tend to shut down and overheat all the time, then they might have some issues and problems that must be fixed as soon as possible. But before finding a solution, you must know some key causes behind evaporative coolers shutdown and overheating problems.

Bad Motor Sheave Position 

The sheave of a motor spins on an axle or bearing that is located inside the pulley frame. This specific movement allows the rope to move freely, which helps minimise overall friction. If the sheave of an evaporative cooler motor is not adjusted properly, then expect your cooler to shut down momentarily. Once shut down, the evaporative cooler will cool down first before it can run and operate again.

Absence of Front Discharge Grill

Evaporative coolers have numerous components that can effectively process and regulate the temperature of a property. Since these components work numerous functions, they would most likely generate heat over time. Fortunately, front discharge grills allow sufficient airflow of evaporative coolers to cool them down. On the contrary, operating and running evaporative coolers without the front discharge grill can easily cause the motor to overheat and subsequently shut down.

Inappropriate Belt Tension

The fan belt typically runs from the evaporative cooler motor to its fan. And as a rule of thumb, the tension of the said belt inside your cooler must not be too loose or too tight. Technically, the tension of the fan belt must be at least 1 inch of play. If your evaporative cooler’s fan belt does not adhere to the set recommendations and guidelines, then the whole unit might overheat and shut down unexpectedly. 

Lack of Bearing Lubricant

Lubricant can effectively reduce friction, heat, and damages whenever one is applied between solid surfaces. One of the evaporative cooler components that must have an adequate amount of oil is shaft bearings. Initially, these bearings will have enough oil on their surfaces. However, as time passes, the amount of oil that is present might be insufficient. Once the amount of oil depletes, the bearings will consequently begin to perform erratically, which then causes the overheating of the motor.

Faulty Electrical Components

Another possible reason behind the overheating issues of an evaporative cooler is the presence of faulty electrical components. Some of the wirings and connections that are connected to the cooler might have been shorting out lately. A bad switch in the motor or fuse can also make it overheat and shut down without any warning. Another related problem with electrical components is the presence of too much voltage. Supplying an evaporative cooler with too much voltage can damage its wiring and circuitry, which then results in overheating and obtaining damages.

Overheating and shutting down issues of evaporative coolers are typically caused by a faulty or misaligned component. Fortunately, some of these issues can still be repaired and fixed by professionals, helping you save a significant amount of money. For more information about these issues, just contact us at Peter Ross Enterprises.