SiUS041111 Outdoor Unit: 15/18/24 ClassRemoval Procedure 2174.7 Removal of Four-Way Valve Removal of Four Way ValveProcedure Warning Be sure to wait for 10 minutes or more after turning off all power suppliesbefore disassembling work.Step Procedure Points1 Remove the screw andremove the four-wayvalve coil. The cooling onlymodel has nofour-way valve coil.WarningBe careful not to burn yourselfwith the pipes and other partsthat are heated by the gasbrazing machine.WarningIf the refrigerant gas leaks duringwork, ventilate the room. If therefrigerant gas is exposed toflames, toxic gas may begenerated.CautionIn consideration of globalenvironment protection, do notdischarge the refrigerant gas inthe atmosphere. Make sure tocollect all the refrigerant gas.Cautions for restoration1. Restore the piping by non-oxidation brazing.2. It is required to prevent thecarbonization of the oil insidethe four-way valve and thedeterioration of the gasketsaffected by heat. Keeptemperature below 120°C(248°F).Wrap the four way valvewith wet cloth and provide waterso that the cloth does not dry.Note: Do not use a metal saw forcutting pipes or sawdust willenter the circuit. When withdrawing the pipes, becareful not to pinch them firmlywith pliers to avoid deformingthem. Provide a protective sheet or asteel plate so that the brazingflame cannot influenceperipheries. Before working, makesure that the refrigerantgas is empty in the circuit. Be sure to apply nitrogenreplacement when heatingup the brazed part.2 Heat up the brazedparts of the four-wayvalve and disconnect.Four-wayvalve coil(R14340)(R14341)Four-way valve
