Panasonic CS-VA70KE Service Manual

Also see for CS-VA120KE: Operating instructions

Contents

Panasonic CS-VA70KE Service Manual Manual pdf 46 page image

WHEN RE-INSTALLING AN AIR CONDITIONER, BE SURETO EVACUATE THE AIR INSIDE THE INDOOR UNIT ANDPIPES in the following procedure.Procedure:1. Connect a charging hose with a push pin to the Lowside of a charging set and the service port of the 3-wayvalve.∙ Be sure to connect the end of the charging hose with thepush pin to the service port.2. Connect the center hose of the charging set to avacuum pump adapter and a vacuum pump.3. Turn on the power switch of the vacuum pump andmake sure that the needle in the gauge moves from 0MPa (0 cmHg) to -0.1 MPa (-76 cmHg). Then evacuatethe air for approximately ten minutes.4. Close the Low side valve of the charging set and turnoff the vacuum pump. Make sure that the needle in thegauge does not move for approximately five minutes.BE SURE TO TAKE THIS PROCEDURE IN ORDERTOAVOID GAS LEAKAGE.5. Disconnect the charging hose from the vacuum pump.6. Charge the pipes and indoor unit with gas refrigerantfrom 3-way valve service port, and then discharge therefrigerant until low side (gas side) gauge needleindicates 0.3 MPa (3 kg/cm ).7. Tighten the service port cap at a torque of 18 N m witha torque wrench.8. Remove the valve caps of the 2-way valve and the 3-way valve. Position both of the valves to "open" usinga hexagonal wrench (4 mm).If air remains in the indoor unit and refrigeration pipes, it willaffect the compressor, reduce the cooling capacity, and couldlead to a malfunction.9. Mount valve caps onto the 2-way and 3-way valves.∙ BE SURE TO USE REFRIGERANT RECLAIMINGEQUIPMENT WHILE DISCHARGING THEREFRIGERANT.∙ Purge the air from charge set’s centre hose.∙ Be sure to check for gas leakage.CautionIf gauge needle does not move from 0 MPa (0 cmHg) to -0.1 MPa (-76 cmHg) in step 3. above, take the followingmeasures:If the leaks stop when the piping connections are tightenedfurther, continue working from step 3.If the leaks do not stop when the connections areretightened, repair the location of the leak.11.3. EVACUATION OF RE-INSTALLATION46CS-VA70KE / CU-VA70KE / CS-VA90KE / CU-VA90KE / CS-VA120KE / CU-VA120KE