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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

Work Order Templates

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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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Daikin Cooling-Only Outdoor Unit RKS25G2V1B9

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Maintenance Plans for Daikin Cooling-Only Outdoor Unit Model RKS25G2V1B9

Integrate maintenance plans directly into your work orders in MaintainX.

Electronic Expansion Valve Check

EV connector correctly connected to the PCB

EV generates latching sound when power is turned off and on

Continuity present when connector is disconnected and checked with a tester

Continuity between pins 1 - 6 and 3 - 6

Continuity between pins 2 - 5 and 4 - 5

If there is no continuity between the pins, the EV coil is faulty

If continuity is confirmed, the outdoor unit PCB is faulty

Note: Latching sound varies depending on the valve type

Sign off on the electronic expansion valve check

Run this procedure

Power Supply Waveforms Check

Warning: This procedure requires trained personnel with PPE!

Measure the power supply waveform between No. 1 and No. 2 on the terminal board

Is the power supply waveform a sine wave?

Is there waveform disturbance near the zero cross?

Upload a photo of the waveform

Sign off on the power supply waveforms check

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Four Way Valve Removal

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

Pull out the electronic expansion valve coil.

Remove the terminal cover.

Disconnect the lead wires of the compressor.

Remove the screw and remove the 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.

Cautions for restoration

Run this procedure

Fan Motor Connector Output Check

Check the connection of connector

Check the motor power supply voltage output (pins 4 - 7)

Check the motor control voltage (pins 4 - 3)

Check the rotation command voltage (pins 4 - 2)

Check the rotation pulse (pins 4 - 1)

Sign off on the fan motor connector output check

Run this procedure

Thermistor Resistance Check

Warning: Disconnect the connectors of the thermistors from the PCB before proceeding