Newer video on changing the AC foam gasket seal https://www.loveyourrv.com/rvaircon...

In this video, I clean and inspect my Keystone Cougar fifth wheel trailers Coleman Mach 3 air conditioner. Model AirXcel 48203A866

See Part one video    • RV AC Maintenance Part 1  Quick Look...  

Disclaimer: I’m not a certified RV technician merely an RV owner. This post and video should not be taken as instructional. If you decide to do the things depicted in the video, do the research and be aware of all risks involved. I accept no liability, you have been warned. – Ray

First I TURNED OFF ALL POWER to the Air Conditioner by unhooking the AC power cable and disconnecting the 12volt batteries.

I show how I clean both the evaporator and condenser coils and straighten bent fins on both. I then reseal the inside chamber with new aluminum ducting tape and clean the sponge input filter.

I also add some lubricant on the shaft of the fan motor and inspect the unit. I check for debris and clean the chassis. Finally, I test the system for optimal cooling temperature differential using an IR gun.

Products used in video:

Evaporator Coil Cleaner https://amzn.to/2IbWRfA
Condenser Coil Cleaner https://amzn.to/2IjCKrX
Bulls Eye Hose Nozzle https://amzn.to/2wAJTCH
Supco Fin Combs https://amzn.to/2rBboXW
Silver Foil Duct tape https://amzn.to/2IfTr7z

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