Daikin RKN18NMVJU User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

18000 Btu/h Class

Outdoor Unit

Inverter

Pair Type

Si001556E

Service Manual

Removal Procedure

Outdoor Unit

zCooling Only

RKN18NMVJU

Si001556E

Removal Procedure 1

Table of Contents

1. Outer Panels ...........................................................................................2

2. Outdoor Fan / Fan Motor.........................................................................4

3. Electrical Box ..........................................................................................7

4. PCB.......................................................................................................10

5. Thermistor ASSY / Partition Plate .........................................................12

6. Sound Blankets .....................................................................................16

7. Electronic Expansion Valve Coil / Compressor.....................................17

Outer Panels Si001556E

2Removal Procedure

1. Outer Panels

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

disassembling work.

Step Procedure Points

1 Remove the 6 screws

and remove the top

panel.

2 Remove the 8 screws

of the front panel.

3 Slide the fan motor

fixing frame to the left

and unfasten the 2

hooks.

Top panel

(R21871)

Front panel

(R21872)

Fan motor fixing frame

Hook

(R21873)

Si001556E Outer Panels

Removal Procedure 3

Unfasten the 2 hooks

on the right side.

Remove the front panel.

6 Remove the 4 screws

of the discharge grille.

7 Unfasten the 2 hooks

and remove the

discharge grille.

Step Procedure Points

Hook

Front panel

(R21874)

Discharge grille

(R20906)

Hook

Discharge grille

(R21875)

Outdoor Fan / Fan Motor Si001556E

4Removal Procedure

2. Outdoor Fan / Fan Motor

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

disassembling work.

Step Procedure Points

1 Remove the drip proof

cover.

Disconnect the

connector [S71].

Pull out the bottom

clamp of the fan motor

lead wire.

[S71]: fan motor

4 Release the fan motor

lead wire from the

groove.

Drip proof cover

(R21876)

[S71]

Clamp

Fan motor

lead wire

(R21877)

Groove

(R21878)

Si001556E Outdoor Fan / Fan Motor

Removal Procedure 5

5 Remove the nut and

remove the outdoor fan.

Nut size : M8

Align the mark of the

outdoor fan with the D-cut

section of the motor shaft

when reassembling.

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.

6 Remove the 2 screws

and remove the fan

motor fixing frame.

When reassembling, fit the 2

lower hooks into the bottom

frame.

Step Procedure Points

Nut Outdoor fan

(R21879)

13 mm

(0.51 inch)

(R18965)

Lead wire Outdoor fan

(R3249)

Fan motor fixing frame

(R21880)

Hook (R20916)

Outdoor Fan / Fan Motor Si001556E

6Removal Procedure

7 Unfasten the 3 hooks

on the fan motor fixing

frame and release the

fan motor lead wire.

8 Remove the 4 screws

and remove the fan

motor.

Step Procedure Points

Fan motor lead wire

Hook

(R21881)

Fan motor

(R21882)

Si001556E Electrical Box

Removal Procedure 7

3. Electrical Box

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

disassembling work.

Step Procedure Points

1 Remove the 2 screws

of the terminal cover.

Open the terminal cover

and pull down to

unfasten the 2 hooks.

Remove the terminal

cover.

Remove the 7 screws

on the terminal board

and disconnect the

connecting wire and

power supply wire.

Loosen the 2 lock nuts

and remove the 2

conduits.

Remove the connecting

wire and power supply

wire.

Terminal cover

(R21883)

Hook

(R21884)

123

Connecting wire Power supply wire

Lock nut

Conduit

Terminal board

(R21885)

Electrical Box Si001556E

8Removal Procedure

7 Remove the 2 screws

and remove the conduit

mounting plate.

When reassembling, be sure

to fit the 2 hooks on the

conduit mounting plate to the

right side panel.

8 Remove the 2 screws.

9 Disconnect the

connector [S20].

[S20]: electronic expansion

valve coil

10 Disconnect the 2

connectors from the

reactor.

When reassembling, you

can reconnect the 2

connectors for the reactor in

either way regardless of the

color.

Step Procedure Points

Conduit

mounting

plate

(R21886)

(R21918)

Hook

(R21887)

[S20]

(R21888)

Connector Reactor

(R21889)

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