Daikin 3-Zone Cooling-Only Outdoor Unit 3MXS52E3V1B

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

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.

The cooling only models have no four way valve coil.

Warning: Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.

Warning: If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.)

Caution: From the viewpoint of global environment protection, do not discharge the refrigerant gas in the atmosphere. Make sure to collect all the refrigerant gas.

1. Restore the piping by nonoxidation brazing.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Is the refrigerant gas empty in the circuit?

Warning: Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.

Warning: If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.)

Caution: From the viewpoint of global environment protection, do not discharge the refrigerant gas in the atmosphere. Make sure to collect all the refrigerant gas.

Is the piping restored by nonoxidation brazing?

Is the temperature kept below 120°C to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat?

In case of difficulty with gas brazing machine:

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Disconnect the compressor lead wires.

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.

Heat up the brazed part of the discharge side and disconnect the part (a).

Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

1. Remove the electronic expansion valve coils.

1 Pull out the electronic expansion valve coils.

2. Remove the four way valve coil.

1 Remove the screw to remove the four way valve coil.

When reassembling, meet the edge of the thermistor and the fixture.

1 Open the putty and remove the liquid pipe thermistors.

2 Pull out the gas pipe thermistors.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Detach the fixing tape of the electrical box cover

Unfasten the 4 hooks at the mark of the electrical box cover

Lift the electrical box cover up and remove it

Detach the clamp and disconnect the connector for the fan motor [S70]

Release the fan motor lead wire from the hooks

Disconnect the connectors for the electronic expansion valve coils