Panasonic CS-A7DKD Service Manual

Panasonic CS-A7DKD Service Manual Manual pdf 62 page image

11.1.6. Gas charging(After Evacuation)1. Connect the charge hose to the charging cylinder.• Connect the charge hose which you disconnected fromthe vacuum pump to the valve at the bottom of thecylinder.2. Purge the air from the charge hose.• Open the valve at the bottom of the cylinder and pressthe check valve on the charge set to purge the air (becareful of the liquid refrigerant).3. Open the valve (Low side) on the charge set and chargethe system with liquid refrigerant.• If the system cannot be charged with the specifiedamount of refrigerant, it can be charged with a little at atime (approximately 150 g each time) while operatingthe air conditioner in the cooling cycle; however, onetime is not sufficient, wait approximately 1 minute andthen repeat the procedure. (pumping down-pin)This is different from previous procedures. Because you arecharging with liquid refrigerant from the gas side, absolutely dono attempt to charge with large amount of liquid refrigerantwhile operating the air conditioner.4. Immediately disconnect the charge hose from the 3-way valve’s service port.• Stopping partway will allow the refrigerant to bedischarged.• If the system has been charged with liquid refrigerantwhile operating the air conditioner, turn off the airconditioner before disconnecting the hose.5. Mount the valve stem caps and the service port cap.• Use torque wrench to tighten the service port cap to atorque of 18 N.m.• Be sure to check for gas leakage.Procedure:62CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD /