Panasonic CS-C18DKV Service Manual page 47

11.1.3. Re-air purging
(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.
• Open the valve on the gas cylinder.
• Open the valve on the manifold gauge, discharge for
three seconds and wait for one minute. Repeat this
three times.
5. Check for gas leakage.
• Check the flare connections for gas leakage.
6. Discharge the refrigerant.
• Close the valve on the gas cylinder and discharge the
refrigerant until the gauge indicates 0.1 to 0.3 MPa.
7. Disconnect the manifold gauge and gas cylinder.
8. Mount the valve caps and the service port caps onto the
3-way valves.
• Be sure to use a torque wrench to tighten the service
port nut.
• Be sure to check for gas leakage.
47
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV