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10.3.3 Evacuation of the Equipment
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND
PIPES in the following procedure.
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o
Be sure to connect the end of the charging hose with the push pin to the service port.
2 Connect the center hose of the charging set to a vacuum pump.
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERENT GAS LEAKAGE.
5 Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6 Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4 mm).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
o
Be sure to check for gas leakage.
Summary of Contents for CS-S9NKV
Page 15: ...15 4 2 3 CU S18NKV CU S24NKV...
Page 16: ...16 4 2 4 CU S28NKV...
Page 17: ...17 5 Refrigeration Cycle Diagram 5 1 CS S9NKV CU S9NKV CS S12NKV CU S12NKV...
Page 18: ...18 5 2 CS S18NKV CU S18NKV CS S24NKV CU S24NKV...
Page 19: ...19 5 3 CS S28NKV CU S28NKV...
Page 24: ...24 7 Wiring Connection Diagram 7 1 Indoor Unit 7 1 1 CS S9NKV CS S12NKV...
Page 25: ...25 7 1 2 CS S18NKV CS S24NKV...
Page 26: ...26 7 1 3 CS S28NKV...
Page 31: ...31 8 Electronic Circuit Diagram 8 1 Indoor Unit 8 1 1 CS S9NKV CS S12NKV...
Page 32: ...32 8 1 2 CS S18NKV CS S24NKV...
Page 33: ...33 8 1 3 CS S28NKV...
Page 41: ...41 9 1 5 Human Activity Sensor Printed Circuit Board...
Page 42: ...42 9 2 Outdoor Unit 9 2 1 Main Printed Circuit Board 9 2 1 1 CU S9NK...
Page 43: ...43 9 2 1 2 CU S12NK...
Page 44: ...44 9 2 1 3 CU S18NK CU S24NK...
Page 45: ...45 9 2 1 4 CU S28NK...
Page 46: ...46 9 2 2 Noise Filter Printed Circuit Board 9 2 2 1 CU S9NKV...
Page 47: ...47 9 2 2 2 CU S28NKV...