Panasonic CS-KS30NKU Technical & Service Manual

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Panasonic CS-KS30NKU Technical & Service Manual Manual pdf 46 page image

InsulationtesterProbeClipGround wireTerminal plateCoppertube ormetallic partClipInsulationtesterProbeFig. 1Fig. 2Fig. 3Fig. 4Coppertube ormetallic partClipInsulationtesterProbeClipInsulationtesterProbeMetallicpartFrom fan motor,compressor andother parts9. CHECKING ELECTRICAL COMPONENTS9-1. Measurement of InsulationResistanceThe insulation is in good condition if the resistanceexceeds 1M ohm.9-1-1. Power Supply CordClamp the grounding wire of power cord with the leadclip of the insulation resistance tester and measure theresistance by placing a probe on either of the twopower wires. (Fig. 1)Then also measure the resistance between thegrounding and other power terminals. (Fig. 1)9-1-2. Indoor UnitClamp an aluminum plate fin or copper tube with thelead clip of the insulation resistance tester andmeasure the resistance by placing a probe on eachterminal screw on the terminal plate. (Fig. 2)Note that the ground line terminal should be skippedfor the check.9-1-3. Outdoor UnitClamp a metallic part of the unit with the lead clip ofthe insulation resistance tester and measure theresistance by placing a probe on each terminal screwwhere power supply lines are connected on theterminal plate. (Fig. 2)9-1-4. Measurement of InsulationResistance for Electrical PartsDisconnect the lead wires of the desired electric partfrom terminal plate, capacitor, etc. Similarly disconnectthe connector. Then measure the insulation resistance.(Figs. 3 and 4)Refer to Electric Wiring Diagram.If the probe cannot enter the poles because the hole istoo narrow then use a probe with a thinner pin.NOTE46