Panasonic CS-A18CKPG Service Manual page 91

11.1.3 Re-air purging
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(Re-installation)
Procedure:
1. Remove the cap nut from 3-way valves.
Remove the cap nut from 3-way valves after carefully checked whether the piping
connection was properly and certainly done.
2. Confirm that valve in both 3-way valves are set to the CLOSE.
3. Connect the gas cylinder to the liquid-side (high-pressure) 3-way valve and the charge set to
the gas side (low-pressure) 3-way valve.
Remove the flare nut from the service ports to connect the manifold gauge and gas
cylinder.
Close the valves on the gas cylinder and manifold gauge.
4. Air purging.