Panasonic CS-A18CKPG Service Manual page 90

6. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1 MPa.
If the unit cannot be operated at the cooling (weather is rather cool), press the Pump
Down switch on the Indoor unit.
So that the unit can be operated.
7. Immediately set the gas side (Low side) 3-way valve to the close position.
Do this quickly so that the gauge ends up indicating 0.1 0.3 MPa.
8. Disconnect the manifold gauge, and mount both the
3-way valves caps and the service port caps.
Use torque wrench to tighten the service port nut to a torque of 18 N.m.
Be sure to check for gas leakage.
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