Si06-313 Outdoor UnitRemoval Procedure 1472.6 Removal of the Four Way ValveProcedure Warning Be sure to wait 10 minutes or more after turning off all power suppliesbefore disassembling work.Step Procedure Points1 Loosen the screw of thefour way valve coil. Provide a protective sheet ora steel plate so that thebrazing flame cannotinfluence peripheries. Be careful so as not to breakthe pipes by pressing itexcessively by pliers whenwithdrawing it.CautionBe careful about the four wayvalve, pipes and so on, whichwere heated up by a gasbrazing machine, so as not toget burnt your hands.Cautions for restoration1. Restore the piping by non-oxidation brazing. Braze itquickly when no nitrogen gascan be used.2. It is required to prevent thecarbonization of the oil insidethe four way valve and thedeterioration of the gasketsaffected by heat. For thesake of this, wrap the fourway valve with wet cloth andprovide water so that thecloth will not be dried andavoid excessive heating.(Keep below 120°C)In case of the difficulty withgas brazing machine1. Disconnect the brazed partwhere is easy to disconnectand restore.2. Cut pipes on the main unit bya miniature copper tubecutter in order to make iteasy to disconnect.Note: Do not use a metalsaw for cutting pipes by allmeans because the sawdustcome into the circuit.2 Heat up the brazed partof the four way valveand disconnect. Be sure to applynitrogenreplacement whenheating up thebrazed part.3 Heat up every brazedpart in turn anddisconnect.
