Question about Mastercool 67471 Evaporative Cooler Air Conditioner
Good morning, Its kind of funny, I am off to make repairs on a evaporator cooler this day. There is not a lot to these coolers, a motor, belt drive, water pump, and a large blower wheel. You say it does not seem to be as profiicinent as it used to be, and it cuts out sometimes, or does it cut off? The 1st thing to check on these coolers, is the V-Belt.They tend to wear out quickly and will cause the motor to run much slower then normal. In stead of calling anyone out we can solve this together.If you can get to the unit If is on the roof, in a window or where ever it is, there should be a way to shut off the power at the unit or you can use the switch as long as no one comes along and turns it on if you are working on it.But, look at the belt to see how loose it is and if it has cracks on the inside all around.They should be changed twice a year. To take the belt off set by step is to grasp it with your best hand and look at the large pulley.Apply pressure to the belt to the inside of it as you turn the large pulley away from you, the belt will come right off. It is much better to let it come off at the large one 1st, then it just falls right off. On the belt, you will find a number with a couple of letter on it the belt size, such as 4L370, or A-36, and so on. Take it to an appliance parts store to get one or even a auto parts place may be able to match up the size. When you put this back on, put it around the motor pulley 1st and on top of the larger pulley. You will notice it is tighter now but that's normal. With the belt starting to go on, turn the large pully with pressure on belt and it will go on. It will be harder to install as it is new. This will solve the problem. You will notice it will move more air and run faster. There will be a bid difference. Let me know how it goes, Sincerely,
PS To get inside to do this is to take a panel one of 4 and you should be able to lift or slide it up and out.Look it over to see.
Posted on Nov 20, 2009
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Posted on Jan 02, 2017
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