

The Daikin Outdoor Heat Pump 3MXS40K3V1B is a high-efficiency HVAC solution designed for residential and commercial applications. This model offers reliable heating and cooling performance, ensuring optimal comfort while minimizing energy consumption. Ideal for various settings, it combines advanced technology with durable construction for long-lasting operation.
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Tensioning Guide
Belt-diagram
C-120 pulleys
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Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Drive Motor
B2 Rollers
Tensioning System
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Daikin Outdoor Heat Pump 3MXS40K3V1B
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Coil / Thermistor Removal
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
1 Pull out the electronic expansion valve coils.
2 Remove the screw and remove the four way valve coil.
The cooling only models have no four way valve coil.
3 Open the putty and remove the liquid pipe thermistors.
When reassembling, meet the edge of the thermistor and the fixture.
4 Pull out the gas pipe thermistors.
Be careful not to lose the clip.
The positions of the clamp and outdoor heat exchanger thermistor differ depending on the model.
Compressor Removal
Warning
Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.)
Since it may happen that the refrigerant oil in the compressor catches fire, prepare wet cloth so as to extinguish fire immediately.
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.
Restore the piping by non-oxidation brazing.
Note
Distributor Removal
Warning:
Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
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.
Restore the piping by non-oxidation brazing.
Note:
Before working, make sure that the refrigerant gas is empty in the circuit.
Electrical Box Removal
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
1. Disconnect the harnesses.
1 Peel off the fixing tape.
2 Unfasten the 4 hooks and remove the electrical box cover.
3 Detach the clamp and disconnect the connector [S70].
[S70]: fan motor
When reassembling, insert the clamp into either hole as below.
Some models have no ferrite lead wire from the hooks.
4 Release the fan motor core for the harness of [S70].
Fan Motor Removal
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
1 Remove the 2 screws and remove the fan motor fixing plate.
When reassembling, fit the lower hooks.
2 Remove the nut and remove the outdoor fan.
Nut size: M6
When reassembling, align the mark of the outdoor fan with the D-cut section of the motor shaft.
When reassembling, put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan.
3 Open the 2 hooks and release the fan motor lead wire.
4 Remove the 4 screws and remove the fan motor.;
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