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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. Open the valves (Low side) on the charge set and discharge the refrigerant until the gauge indicates
0.05 to 0.1Mpa.
If the pressure when the air conditioner is not running is higher than 0.1Mpa, discharge the
refrigerant until the gauge indicates 0.05 to 0.1 Mpa. Discharge the refrigeration gradually; if it is
discharged too suddenly, the refrigeration oil will be discharged.
6.8 Evacuation
Procedure:
1. Connect the vacuum pump to the charge set
’
s centre hose.
2. Evacuation for approximately one hour.
Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less].
3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge
needle does not move (approximately 5 minutes after turning off the vacuum pump).
4. Disconnect the charge hose from the vacuum pump.
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