Midea HD-663FWEN - Page 32

Service Manual_2020-V1.0
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12）Replace the filter, Cu-Fe tubes welding ⓭ used Ag
welding rod, Cu-Cu tubes welding⓮ used Cu welding
rod.
13）Vacuum system,The degree of vacuum below 6Pa.
14）Perfusion refrigerant.
15）Use the vise grip pliers clamp the middle of the
process pipe, then seal welding process tube⓯⓰.