Panasonic CS-PS9NKV Service Manual

Contents

Panasonic CS-PS9NKV Service Manual Manual pdf 45 page image

4510.3.3 Evacuation of the EquipmentWHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT ANDPIPES 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-wayvalve.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 from0 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 thegauge 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.