Panasonic CS-A7BKP Service Manual

Also see for CS-A12BKP: Operating instructions Operating instructions

Panasonic CS-A7BKP Service Manual Manual pdf 50 page image

11.1.1. Evacuation of InstallationWHEN INSTALLING AN AIR CONDITIONER, BE SURE TOEVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPESin the following procedure.1. Connect a charging hose with a push pin to the Lowside of a charging set and the service port of a 3-wayvalve.• Be sure to connect the end of the charging hose with thepush pin to the service port.2. Connect the centre hose of the charging set to avacuum 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 after approximately five minutes.BE SURE TO TAKE THIS PROCEDURE IN ORDER TOAVOID GAS LEAKAGE.If air remain in the indoor unit and refrigeration pipes, it willaffect the compressor, reduce to cooling capacity, and couldlead to a malfunction.5. Disconnect the charging hose from the vacuum pumpand from the service port of the 3-way valve.6. Tighten the service port cap at a torque of 18 N.m witha torque wrench.7. 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).8. Mount the valve caps onto the 2-way and 3-way valves.• Be sure to check for gas leakage.CautionIf gauge needle does not move from 0 cmHg to -76cmHg in step (3) above, take the following measures:If the leaks stop when the piping connections aretightened further, continue working from step (3).If the leaks do not stop when the connections areretightened, repair the location of the leak.11.1. Evacuation of the Equipment (For Europe & Oceania Destination)Procedure:50CS-A7BKP CU-A7BKP5 / CS-A7BKP CU-A7BKP6 / CS-A9BKP CU-A9BKP5 / CS-A9BKP CU-A9BKP6 / CS-A12BKP CU-A12BKP5 / CS-A12BKP CU-A12BKP6