Daikin RXR28EV1B9 Manuale utente

REMOVAL

PROCEDURE

SERVICE MANUAL

2.8/4.2/5.0 kW Class

Outdoor Unit

Inverter

Pair Type

Si00-777

Service Manual

Removal Procedure

Outdoor Unit

zHeat Pump

RXR28EV1B9

RXR42EV1B9

RXR50EV1B9

RXR28FVLT

RXR50FVLT

Si00-777

Removal Procedure 1

Table of Contents

1. Removal of Humidifier Unit .....................................................................2

2. Removal of Heater Assembly /

Humidifying Rotor / Humidifying Rotor Motor..........................................5

3. Removal of Humidifying Fan Assembly ..................................................9

4. Removal of Hygroscopic Fan Motor......................................................12

5. Removal of Outdoor Fan / Fan Motor ...................................................13

6. Removal of Humidifying Duct................................................................17

7. Removal of Electrical Box .....................................................................18

8. Removal of PCB....................................................................................22

9. Removal of Sound Blankets..................................................................25

10.Removal of Thermistor Assembly .........................................................27

11.Removal of Reactor / Partition Plate .....................................................29

12.Removal of Four Way Valve .................................................................30

13.Removal of Electronic Expansion Valve ...............................................32

14.Removal of Compressor .......................................................................33

Note: The illustrations may be slightly different depending on the model.

Removal of Humidifier Unit Si00-777

2Removal Procedure

1. Removal of Humidifier Unit

Procedure Warning Be sure to wait for 10 minutes or more after turning off all power

supplies before disassembling work.

Step Procedure Points

1. External appearance

2. Remove the top panel.

1Remove the 4 screws

and remove the top

panel.

Humidifier unit air inlet (1)

Humidifier

unit

Humidifier

unit air

outlet

(R13980)

(R13981)

Humidifier unit air inlet (2)

Outdoor

temperature

thermistor

(R13982)

Top panel

Si00-777 Removal of Humidifier Unit

Removal Procedure 3

3. Remove the humidifier

unit.

Be sure to wait for 10

minutes or more after

turning off the power supply

before disconnecting the

connectors.

1The figure shows the

arrangement of the

relay harnesses.

2Disconnect the 5 relay

connectors.

3Disconnect the

connector for the

humidifier fan motor.

Pull out the connector while

pushing up the hook on the

bottom side.

Step Procedure Points

(R5791)

(R5792)

(R13983)

Humidifier fan motor

(R5796)

Removal of Humidifier Unit Si00-777

4Removal Procedure

4Remove the 4 screws

of the humidifier unit

and lift it up to remove.

5The figure shows the

positions of the

humidifying duct and

the relay connectors.

When installing the

humidifier unit, do not forget

to connect the relay

connectors.

Step Procedure Points

(R13984)

Humidifier unit

Relay

connector

Humidifying

duct

(R13985)

Si00-777 Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor

Removal Procedure 5

2. Removal of Heater Assembly / Humidifying Rotor /

Humidifying Rotor Motor

Procedure Warning Be sure to wait for 10 minutes or more after turning off all power

supplies before disassembling work.

Step Procedure Points

1. Inside structure of the

humidifier unit

Preparation

Remove the top panel

according to "Removal of

Humidifier Unit".

2. Remove the heater

assembly.

1Remove the 4 screws

of the duct on

adsorption side.

2Release the lead wire

for the humidifying

rotor motor from the

hooks.

Duct

(adsorption side)

Heater

assembly

Humidifier

fan motor

Damper

motor

Humidifying

rotor motor

(R13986)

(R13987)

(R5799)

Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Si00-777

6Removal Procedure

3Remove the 2 screws

and remove the heater

assembly.

The heater assembly should

be replaced as an assembly

set. (Disassembling of the

assembly may cause

malfunction.)

4Unfasten the hook.

5Inside of the heater

assembly.

Heater and thermal fuse

should be replaced as the

heater assembly.

6Loosen the 4 screws of

the thermal protector.

The thermal protector is

removable. Remove it

before the lead wire.

Step Procedure Points

(R5800)

Hook

(R5801)

Heater

Thermal fuse

(R5802)

Thermal protector

(R5803)

Si00-777 Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor

Removal Procedure 7

7Inside structure of the

heater assembly.

3. Remove the humidifying

rotor.

1Release the fan motor

lead wire from the

hooks.

2Remove the bell mouth

on adsorption side.

Step Procedure Points

Heater assembly

(R5804)

Fan motor lead wire

(R5805)

Bell mouth

(R13988)

Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Si00-777

8Removal Procedure

3Lift the humidifying

rotor up to remove.

A heat catalyst (black) is

applied on the upper side.

4. Remove the humidifying

rotor motor.

1The figure shows the

connector for the

humidifying rotor

motor.

2Remove the 2 screws

and remove the

humidifying rotor

motor.

Step Procedure Points

Humidifying rotor

(Moisture adsorption

element)

(R13989)

(R5808)

Humidifying rotor

motor

Rotor driving part

(R5809)

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