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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

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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 Indoor Unit Wall Mounted Type FTXS36HVJU

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Maintenance Plans for Daikin Indoor Unit Wall Mounted Type Model FTXS36HVJU

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Inverter Checker Check

Warning: This procedure requires trained personnel with PPE!

Power turned off?

Install the inverter checker instead of a compressor

Charged voltage of the built-in smoothing electrolytic capacitor dropped to 10 VDC or below?

Terminals removed from the compressor?

Terminals connected to the terminals of the inverter checker without touching each other?

Activate power transistor test operation from the outdoor unit

Forced cooling operation ON/OFF button pressed for 5 seconds?

Diagnose according to 6 LEDs lighting status

Run this procedure

Rotation Pulse Check

Warning: This procedure requires trained personnel with PPE!

Voltage of 320 ± 30 V is applied

Set operation off and power off. Disconnect the connector S70.

Voltage between the pins 4 - 7

Control voltage between the pins 3 - 4

Rotation command voltage between the pins 2 - 4

Keep operation off and power off. Connect the connector S70.

2 pulses (0 ~ 15 VDC) at the pins 1 - 4 when the fan motor is rotated 1 turn by hand

Fuse is not melted

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

Power Supply Waveforms Check

Check No.11

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

Check the waveform disturbance

Check to see if the power supply waveform is a sine wave

Check to see if there is waveform disturbance near the zero cross

Upload the waveform image

Sign off on the power supply waveforms check

Run this procedure

Power Module Check

Check No.22

Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.

Voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V

Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.

Compressor harness connector disconnected from the outdoor unit PCB

Follow the procedure below to measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi-tester. Evaluate the measurement results for a judgment.

Enter the resistance between the terminals of the DB1 and the terminals of the compressor

Resistance measurement within acceptable range

Sign off on the power module check

Run this procedure