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Refridgeration

equipment tutorials:
refidgeration basics https://youtu.be/XHIn2kxTzVE
manifold https://youtu.be/xGQ1OwqEppU


Evacuation/recovery:
https://youtu.be/S19vONN4Bb4
https://youtu.be/PyrXZVyK7lo
https://youtu.be/nBCWYgCcnpE    Also has links to the tools he used
system pump down https://youtu.be/XG1gEZ-Qikg

replacing a compressor:
outdoor unit https://youtu.be/P0E62_QSkGc


Installing an outdoor unit:
https://youtu.be/y3GJpnlEUxc

change a R22n to 404a
expansion valve https://youtu.be/EXUN5JxOPlA

Other research:
https://musingsonentropy.com/hvacr/


building a cooling system:

specialty tools needed:
tool bag for service techs https://youtu.be/cseu-rNrHuo

AC manifold gauge set
vacuum pump with necessary fittings
oxy/acetylene torch


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