Service Manual

 Maintenance 7 
3.2 Outdoor Unit
Evacuation for the whole system
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Procedure:
1. Confirm that the 2- and 3-way valves are opened.
2. Connect the vacuum pump to the 3-way valve’s
service port.
3. Evacuate the system for approximately one hour.
Confirm that the compound meter indicates
-0.1 MPa (14.5Psi).
4. Close the valve (Low side) on the charge set and turn
off the vacuum pump.
5. Wait for 5 minutes then check whether the gauge�
needle moves after turning off the vacuum pump. If�
the gauge needle moves backward, check whether�
there is gas leakage.
6. Disconnect the charge hose from the vacuum pump.
7. Mount the caps of service port and 2- and 3-way�
valves.
8. Use a torque wrench to tighten the caps to a torque�
of 18 N.m. / 13.3 ft-lb