Four Way Valve - Daikin 2MXS18NMVJU Service Manual

Four Way Valve

8. Four Way Valve
Warning
 Be sure to wait for 10 minutes or more after turning off all power supplies before
 Be careful not to get yourself burnt with the pipes and other parts that are heated by
 If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
Caution
 From the viewpoint of global environment protection, do not discharge the refrigerant
 Cautions for restoration
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 into
 When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
 Provide a protective sheet or a steel plate so that the brazing flame cannot influence
 Be careful so as not to burn the compressor terminals, the name plate, the outdoor
 In case of difficulty with gas brazing machine
Step
1 Remove the screw and
remove the four way
valve coil.
22
disassembling work.
the gas brazing machine.
exposed to flames, toxic gas may be generated.)
gas in the atmosphere. Make sure to collect all the refrigerant gas.
1. Restore the piping by non-oxidation brazing.
2. It is required to prevent the carbonization of the oil inside the four way valve and the
deterioration of the gaskets affected by heat. (Keep below 120°C (248°F).) For the sake of
this, wrap the four way valve with wet cloth and provide water so that the cloth does not
dry.
the circuit.
may get deformed.
peripheries.
heat exchanger fin.
1. 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.
Procedure
Four way
valve coil
(R22347)
Si121558EC
Points
Removal Procedure