Once inside check the tension of the belt running from the swamp cooler motor to the fan. It should not be too tight or too loose. Incorrect fan belt tension could cause your swamp cooler motor to overheat. Roughly speaking there should be about one inch of play in the tension of your fan belt.Click to see full answer. Subsequently, one may also ask, how tight should a blower belt be?The blower belt adjustment should be done with the motor cold, and have 3/4″ deflection in or out on the long side of the belt. This should give you 1 1/2″ total deflection.One may also ask, how do you grease a swamp cooler? Open the caps on the top of the grease fittings and place three or four drops of 20-weight non-detergent SAE oil in the fittings to oil the bearings. Place the caps back on the grease fittings and put the cooler panels back on the cooler. Secondly, why is my swamp cooler so loud? If your cooler is making a buzzing sound and then stops running, one cause could be your bearings. If you do not properly maintain your cooler by keeping the bearings lubricated, they will dry, make noise, and eventually cause the swamp cooler to stop running.Are swamp coolers noisy?Noise. Swamp coolers are much quieter in operation than air conditioners. This is because the condenser in the air conditioner produces noise as it converts the chemicals from liquid to gas.
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