Panasonic CU-C12DKU - Manual (Page 49)

(Lack of refrigerant in the refrigeration cycle)
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to
the open position.
2. Connect the charge set to the 3-way valve’s service
port.
• Leave the valve on the charge set closed.
• Connect the charge hose with the push-pin to the
service port.
3. Connect the charge set’s centre hose to refrigerant
reclaiming equipment.
• Purge the air from charge hose.
4. Open the valve (Low side) on the charge set and
discharge the refrigerant until the gauge indicates 7.25
PSI (0.5 kg/cm
2 G) to 14.5 PSI (1 kg/cm 2 G).
• If there is no air in the refrigeration cycle (the pressure
when the air conditioner is not running is higher than 0.1
PSI (1 kg/cm
2 G), discharge the refrigerant until the
gauge indicates 7.25 PSI (0.5 km/cm 2 G) to 14.5 PSI (1
kg/cm 2 G). If this is the case, it will not be necessary to
apply a evacuation.
• Discharge the refrigerant gradually; if it is discharged
too suddenly, the refrigeration oil will also be
discharged.
5. Turn on refrigerant reclaiming equipment.
11.4. Balance refrigerant of the 2-way, 3-way valves
49
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU