Daikin R125LUY1 Bedienungsanleitung

REMOVAL

PROCEDURE

SERVICE MANUAL

Outdoor Unit

Non-Inverter

Pair Type

3/4/5/6 HP Class

Si241312

Service Manual

Removal Procedure

Outdoor Unit

Applicable Models

zCooling Only

R71LUY1

R100LUY1

R125LUY1

R140LUY1

Si241312

Removal Procedure 1

Table of Contents

1. Procedure to Remove Outside Panels....................................................2

2. Procedure to Remove Switch Box ..........................................................3

3. Procedure to Remove Propeller Fan and Fan Motor ..............................4

4. Procedure to Remove PCB Assy............................................................5

5. Procedure to Remove Thermistor ...........................................................6

6. Procedure to Remove Electronic Expansion Valve

and Low Pressure Sensor.......................................................................7

7. Procedure to Remove Compressor.........................................................8

Procedure to Remove Outside Panels Si241312

2Removal Procedure

1. Procedure to Remove Outside Panels

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

supplies before disassembling work.

Step Procedure Points

1Pull the lower part (7

positions) of suction

grille to your side and

disengage 3 hooks in

its upper side, then pull

down the entire grille to

remove it.

2To remove the front

panel (front part of the

side panel), dismount 1

screw, and pull down

the panel.

3To remove the top

panel, dismount 8

screws.

4Dismount 1 screw to

remove the front panel

of piping cover.

5Dismount 4 screws to

remove the side panel

of piping cover.

6Dismount 7 screws to

remove the rear part of

the side panel.

Top panel

Suction grille

Piping cover side panel

Piping cover front panel

Rear part of

side panel

Front

panel

Front

panel

Si241312 Procedure to Remove Switch Box

Removal Procedure 3

2. Procedure to Remove Switch Box

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

supplies before disassembling work.

Step Procedure Points

Removing top panel and

front panel according to

the “Procedure to

Remove Outside Panels”.

1Spread the lower parts

of hooks (3 locations) to

remove the resin cover.

2Remove following

connectors, fastening

terminal from

compressor terminals

and thermistors

according to “Removal

of Thermistor”.

X14A, X15A, X11A,

X12A, X22A, X10A,

X25A

3Dismount 2 screws (∗)

fixing the switch box.

4To remove the switch

box, pull the box

frontward before slide

the left side upward.

Resin cover

Fixing screws (∗)

Hooking parts

Switch box

Hooks

(3 locations)

Procedure to Remove Propeller Fan and Fan Motor Si241312

4Removal Procedure

3. Procedure to Remove Propeller Fan and Fan

Motor

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

supplies before disassembling work.

Step Procedure Points

Removing front panel and

top panel according to the

“Procedure to Remove

Outside Panels”.

1. Removing propeller fan

1Dismount four screws

fixing discharge grille

and disengage 4 hooks

located at upper and

lower sides of the grille

to remove the grille.

2Remove fan stopper

and washer faced nut

fixing propeller fan.

2. Removing the fan motor

1Disconnect the

connector (∗) for fan

motor from the PCB.

(∗)Connector number

R71, 100LU:

X11A, X15A

R125~140LU:

X11A, X12A, X14A,

X15A

Do not pull the lead wire but

hold the connector and press

the hook section when

disconnect the connector.

Precautions for installing

motor

Be sure to fix the motor lead

wire with clampers, or the

lead wire could be caught

with fan resulting damage of

parts.

2Pull out the fastening

terminal from capacitor

(C1R).

3The lead wires are

clamped at 3 locations.

(1 with tie wrap and two

with hooks of partition

plate)

4Dismount 3 screws for

the front panel, and pull

the lead wires to

separate from other

parts.

5Fan motor can be

removed by removing 4

fixing bolts.

Propeller fan

Hooks

Fan stopper

Washer faced nut

Capacitor

(C1R)

Clamps

Fan motor

Screws

(3 pieces)

Lead wire Propeller fan

Si241312 Procedure to Remove PCB Assy

Removal Procedure 5

4. Procedure to Remove PCB Assy

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

supplies before disassembling work.

Step Procedure Points

Removing top panel, front

panel and side panel

according to the

“Procedure to Remove

Outside Panels”.

1Spread the lower parts

of hooks (3 locations) to

remove the resin cover.

2Disconnect all

connectors on the PCB.

3Disconnect 1 screw to

remove the PCB assy.

Claws

Resin cover

Screw

(1 piece)

Glass tube fuse

PCB assy

EMG. DS1

HAP

OFF

HEAT

COOL

234

Dip switch 1 (DS 1)

BS button

HAP Service Monitor LED

Jumper wire

FORCED

DEF,

PUMP

DOWN

Procedure to Remove Thermistor Si241312

6Removal Procedure

5. Procedure to Remove Thermistor

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

supplies before disassembling work.

Step Procedure Points

Removing top panel, front

panel and side panel

according to the

“Procedure to Remove

Outside Panels”.

1Pick up and pull out the

mounting spring to

remove the discharge

pipe thermistor.

2To remove the heat

exchanger thermistor,

pull the locking piece

frontward.

3To remove the outdoor

air thermistor, draw out

frontward and slide it

rightward.

Outdoor air thermistor

Heat exchanger thermistor

Discharge pipe thermistor

(Inside of muffler)

For R71,100LU

and RY125~140LU

Discharge pipe thermistor

(Side of discharge pipe)

For RY71,100LU

and R125~140LU

Si241312 Procedure to Remove Electronic Expansion Valve and Low Pressure Sensor

Removal Procedure 7

6. Procedure to Remove Electronic Expansion Valve

and Low Pressure Sensor

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

supplies before disassembling work.

Step Procedure Points

Removing the parts of

outside panel and the

switch box according to

the “Procedure to

Remove Outside Panels”.

Check that the refrigerant is

completely discharged

before starting the

disassembling work.

1. Removing electronic

expansion valve

1Pull up the electronic

expansion valve coil.

2To remove the

electronic expansion

valve, disconnect 2

brazed joints for each

valve.

2. Removing the low

pressure switch

Cover the other piping with

sheet for welding work or

steel sheet to prevent the

piping from influence of torch

flame.

Caution

When installing, use torch

flame while cool the valve

body with wet cloths or the

like to keep it below 120°C.

1Disconnect 1 brazed

joint to remove the low

pressure switch.

Electronic

expansion

valve

Low

pressure

switch

Electronic

expansion

valve coil

Procedure to Remove Compressor Si241312

8Removal Procedure

7. Procedure to Remove Compressor

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

supplies before disassembling work.

Step Procedure Points

Removing the parts of

outside panel and the

switch box according to

the “Procedure to

Remove Outside Panels”.

Compressor for R71~100

Compressor for R125~140

Check that the refrigerant is

completely discharged

before starting the

disassembling work.

Color of terminal end

R71~100LU

R125~140LU

1 of compressor fixing nuts

is outside of the partition

plate.

Caution

For R125~140LU;

It may cause catching fire on

oil to use torch flame for

disconnecting the brazed

joint before cut the pipes

with pipe cutter.

1Dismount 5 screws to

remove the stop valve

mounting plate.

2Disconnect the gas

piping and the liquid

piping.

3To remove the terminal

cover, press the

protruded section on

both right and left sides.

4Disconnect the lead

wires from the

terminals.

5Remove the sound

insulation (1) and (2).

6Dismount the 4 (∗) nuts

fixing the compressor.

∗3 nuts in the case of

R125~140LU

7Disconnect 2 (∗) brazed

joints.

∗In the case of R125-

140LU;

Cut the suction and

discharge pipe with

pipe cutter before

disconnect the

brazed joints (See

“Caution” in this

page.)

8Lift and take out the

compressor.

Sound insulation (1)

Sound

insulation (2)

Stop valve

mounting plate

Brazed joints

(2 joints)

Compressor

fixing nuts

Compressor

fixing nuts

Cutting position

(Suction pipe)

Cutting position

(Discharge pipe)

T3 (Blue)

(White)

T1 (Red)

W (Blue)

(Red)

(White)

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