Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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I have a MC64 model that is 3 years old, the finest cooler I have ever had. I notice this year that it cycles on and off over a minute or two time unless I have the thermostat to max cool. Nothing has changed and I have the MC thermostat. Also when should I change out the pad? Great product. Thanks Tom

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

boysor2933
  • 293 Answers

SOURCE: Frequent short cycles of the Mastercool swamp cooler

Try to replace the thermostat. Short cycling of motor only happens when the thermostat is set to a very high temperature.

Posted on May 27, 2009

  • 7 Answers

SOURCE: We have a Mastercool II & it was installed ~ 3

The pads you need are at least 8 inches thick. If you have the contractor model, then the pads will be 12 inches thick.
Find a distributor in your town that sells cooler parts, if they dont have them, some of the big home improvement stores carry the pads for your cooler.
Make sure you are using a bleedoff or a dump pump to eliminate the hard water out of the cooler. If you keep those pads clean, they wiil last for many years.

Posted on Aug 07, 2009

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