Daikin 2MXS18NMVJU Service Manual

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Daikin 2MXS18NMVJU Service Manual Manual pdf 20 page image

Electronic Expansion Valve Coil ASSY Si121558EA18 Removal Procedure6. Electronic Expansion Valve Coil ASSYWarning Be sure to wait for 10 minutes or more after turning off all power supplies beforedisassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated bythe gas brazing machine. If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas isexposed to flames, toxic gas may be generated.) Since it may happen that the refrigerant oil in the compressor catches fire, prepare wetcloth so as to extinguish fire immediately.Caution From the viewpoint of global environment protection, do not discharge the refrigerantgas in the atmosphere. Make sure to collect all the refrigerant gas. Restore the piping by non-oxidation brazing.Note Before working, make sure that the refrigerant gas is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. Do not use a metal saw for cutting pipes by all means because the sawdust comes intothe circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipesmay get deformed. Provide a protective sheet or a steel plate so that the brazing flame cannot influenceperipheries. Be careful so as not to burn the compressor terminals, the name plate, the outdoorheat exchanger fin. In case of difficulty with gas brazing machine1. Disconnect the brazed part where is easy to disconnect and restore.2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.Step Procedure Points1 Pull out the 4 electronicexpansion valve coils. The number of the electronicexpansion valve coils variesdepending on the model.2 Remove the electronicexpansion valve coilASSY.Electronicexpansionvalve coil(R22338)Electronic expansionvalve coil ASSY(R22339)