Read Panasonic CU-2E15PBD / CU-2E18PBD Service Manual online
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9. Installation Information
9.1 CU-2E15PBD
9.1.1 Check
Points
9.1.2
The Shapes of the 3-Way Valve Caps of the Outdoor Unit Have Been Changed
Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed.
Firmly tighten the 3-way valve caps by hand, and then tighten them up by another 30 degrees or so (one-twelfth
of a full turn) using a spanner or adjustable spanner.
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