Panasonic CS-MC95KE Service Manual

Contents

Panasonic CS-MC95KE Service Manual Manual pdf 77 page image

11.1. Evacuation of InstallationRequired tools: hexagonal wrench, adjustable wrench,torque wrenches, wrench to hold thejoints, gas leak detector, charging set andvacauum pump.1. Connect a charging hose with a push pin to the Lowside of a charging set and the service ports of a 3-wayvalves.• 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 0cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuatethe air for approximately 10 minutes.4. Close the valve of both the Low and High sides of thecharging set and turn off the vacuum pump. Make surethat the needle in the gauge does not move afterapproximately 5 minutes.BE SURE TO TAKE THIS PROCEDURE IN ORDER TOAVOID GAS REFRIGERANT LEAKAGE.The air in the indoor unit and in the piping must be purged. If airremains in the refrigeration pipings, it will affect thecompressor, reduce the cooling capacity, and could lead to amalfunction.5. Disconnect the charging hose from the vacuum pumpand from the service ports of the 3-way valves.6. Tighten the service port caps of both the 3-way valvesat a torque of 18 N.m with a torque wrench.7. Remove the valve caps of both the 3-way valves.Position both of the valves to “open” using a hexagonalwrench (4 mm).8. Mount valve caps onto of the 3-way valves.• Be sure to check for gas leakage.CautionIf gauge needle does not move from 0 cmHg (0 MPa)to -76 cmHg (-0.1 MPa) in step (3) above, take thefollowing 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.When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure.Service port capBe sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas leakage from therefrigeration cycleProcdure:77CS-MC95KE CU-MC145KE / CS-MC95KE CU-MC185KE / CS-MC95KE CU-3MC205KE / CS-MC125KE CU-MC245KE / CS-MC76KE / CS-MC126KE CU-MC196KE