Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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How do you change the filter? Mastercool MMB14

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Remove sides and replace media in the side panels

Posted on Sep 28, 2009

  • Jeff Barton
    Jeff Barton Sep 28, 2009

    remove sides and replace media in the side panels

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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We have LOTS of dust and dirt coming in when our Mastercool is running. We used it on fan only when the weather was nice. Should this be happening? Will it be better if we only use it on cool? Is there...


it has filters on the unit that need regular cleaning. remove the filters and gently hose them out till all debre is removed. isolate power to the unit and with a damp cloth wipe down fan and other surfaces. Unfortunatly as you have that much in the ducting it will keep blowing debre out for a little while longer. genrally they are cleanest and best on cool.

Nov 20, 2010 | Mastercool 67471 Evaporative Cooler Air...

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How do i operate it?


Go to the Mastercool web site:
http://www.mastercool.com/pages/vacuum_pumps.html
Pick out your model number and then click on "instructions" to download a manual. The most important thing is to change the oil frequently. This unit is used in HVAC to draw a vacuum on an evacuated AC system after repairs were made to insure it is free of any condensables.

Aug 01, 2010 | Mastercool 15 Cfm Deep Vacuum Pump 90059

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Mastercool evaporative coolers have bulky deep filters, which are clogging up with minerals, etc. Does white vinegar remove much of this, or, is there another solution. New ones are expensive & run...


I USE A PRODUCT CALLED TRIPLE D COIL CLEANER LIQUID NOT THE FOAM, BUT THE FOAM WORKS GREAT ALSO. YOU MUST USE A SCHEDULED MAINTENANCE ROUTINE IN ORDER TO BENEFIT FROM THIS TYPE OF BUILD UP. YOU CAN GO TO YOUR LOCAL HVAC DISTIBUTOR, YOU DON'T NEED ANY CERTIFICATION TO BUY THESE CLEANERS, AND YOU CAN EVEN ASK WHICH IS BEST FOR YOU AND HOW OFTEN TO USE THE PRODUCT.

Apr 13, 2010 | Mastercool 67680 Evaporative Cooler Air...

1 Answer

How do I clean the filter using the remote?


dont think there is a filter that can be cleaned by a remote usuall have to pull out then wash

Jan 08, 2010 | Mastercool 67471 Evaporative Cooler Air...

1 Answer

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.

Jul 20, 2009 | Mastercool 67680 Evaporative Cooler Air...

1 Answer

Noise on mastercool


had the same symptoms and found that tightening the squirrel cage set screws eliminated the noise.

May 23, 2008 | Mastercool 67680 Evaporative Cooler Air...

1 Answer

Auto does not work right.


1. remote problem
2 change by new one.

Mar 25, 2008 | Mastercool 67680 Evaporative Cooler Air...

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