Daikin ARM18MV2S User manual

5.0/6.0 kW Class
18000 Btu/h Class
REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Non-Inverter
Pair Type
Si011358EA

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only
ARM18MV2S
RM18NV2S
RM50JV14
RM50KV1V
RN50JV1G
RNE60LV1
RNE60MV1
RNE60MV14
RNE60MV1V

Si011358EA
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................6
3. Electrical Components ............................................................................9
4. Sound Blankets .....................................................................................11
5. Capillary Tube .......................................................................................12
6. Compressor ASSY ................................................................................13
Note: The illustrations may be slightly different depending on the model.

Outer Panels Si011358EA
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
2
Remove the 4 screws
and remove the top
panel.
Remove the 7 screws
of the front panel.
3Lift the front panel and
unfasten the 3 hooks of
the left side and 2
hooks of the right side.
4Remove the 4 screws
and remove the
discharge grille.
(R19258)
Front panel
Top panel
(R15156)
Discharge grille
(R14277)

Si011358EA Outer Panels
Removal Procedure 3
5Remove the screw and
remove the stop valve
cover.
The stop valve cover has 3
hooks.
6Remove the 3 screws
and remove the wire
fixture.
Step Procedure Points
(R16344)
Stop valve cover
(R16345)
Wire fixture
(R19261)

Outer Panels Si011358EA
4Removal Procedure
7Remove the 7 screws
on the terminal board
and disconnect the
connecting wire and the
power supply wire.
8Remove the 2 screws
on the right side
(upper).
9Remove the 2 screws
on the right side
(lower).
Step Procedure Points
(R19262)
Power supply
wire
Connecting
wire
Terminal board
(R16346)
(R15167)

Si011358EA Outer Panels
Removal Procedure 5
10 Remove the 3 screws
on the rear side.
11 Unfasten the hook.
12 Remove the right side
panel.
The right side panel has 2
hooks at the bottom.
When reassembling, make
sure to fit the 2 hooks.
Step Procedure Points
(R15168)
Hook
(R20779)
(R16347)
Right side panel
Hook
(R20780)

Outdoor Fan / Fan Motor Si011358EA
6Removal 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
2
3
Pull out the 2 terminals
(red, white) from the
compressor capacitor
(C1R).
Pull out the terminal (5)
from the magnetic
contactor (K1M).
Release the fan motor
lead wire from the
groove.
The wiring pattern is slightly
different depending on the
model. Please make note of
the wiring pattern before
removing.
A1
13
5
A2
14
6
Groove
Fan motor
lead wire
(R20805)
to fan motor:
white
to fan motor:
red
C1R
3
1
4
2
to fan motor:
black
K1M
Pattern 1: ARM, RM, RN series
Groove
Fan motor
lead wire
(R20806)
to fan motor:
black
to fan motor:
white
to fan motor:
red
Pattern 2: RNE series
C1R K1M

Si011358EA Outdoor Fan / Fan Motor
Removal Procedure 7
4Remove the screw of
the fan motor fixing
plate.
5Remove the fan motor
fixing plate.
Put the fan motor lead wire
through the back of the fan
motor when reassembling so
as not to be entangled with
the outdoor fan.
When reassembling, fit the
lower hooks into the bottom
frame.
6Remove the nut and
remove the outdoor fan.
Nut size: M6
Align the mark of the
outdoor fan with the D-cut
section of the motor shaft
when reassembling.
Step Procedure Points
(R19343)
(R19260)
Fan motor
fixing plate
(R3249)
Lead wire Outdoor fan
(R15385)
(R15160)
Outdoor
fan
D-cut
10 mm
(0.39 inch)
(R18954)

Outdoor Fan / Fan Motor Si011358EA
8Removal Procedure
7Unfasten the 2 hooks
and release the fan
motor lead wire.
8Remove the 4 screws
and remove the fan
motor.
Step Procedure Points
(R15161)
Hook
Fan motor
(R15162)

Si011358EA Electrical Components
Removal Procedure 9
3. Electrical Components
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Open the fuse cover
and remove the fuse
(F1U).
2
3
4
Pull out the remaining
terminal from the
compressor capacitor
(C1R).
Remove the 2 screws
(M4×8) and remove the
capacitor fixing band.
Remove the
compressor capacitor
(C1R).
Compressor lead wire
RN series
ARM, RM series
RNE series
S: yellow
C: blue
R: red
5
6
Pull out the remaining
terminals from the
magnetic contactor
(K1M).
Remove the 2 screws
(M4×16) and remove
the magnetic contactor
(K1M).
Magnetic
contactor
(K1M)
Fuse (F1U)
Capacitor
fixing band
Compressor
capacitor
(C1R)
Rectifier
(V1R)
Terminal board
(X1M)
(R20807)
to X1M (3): black
to compressor
(S terminal): yellow
to compressor
(R terminal): red
(R20808)
C1R
S
R
(R20893)
C
(R20810)
C
R
S
(R20811)
R
C
S
to rectifier: black to rectifier: black
to X1M (1): red (fuse)
to X1M (1): red
(R20809)
to compressor
(C terminal): blue
K1M

Electrical Components Si011358EA
10 Removal Procedure
7Pull out the terminals
from the terminal board
(X1M).
8
9
Pull out the terminals
from the rectifier (V1R).
Remove the screw
(M4×12) and remove
the rectifier (V1R).
10
11
Remove the screw of
the earth / ground wire.
Remove the screw
(M4×30) and remove
the terminal board.
Step Procedure Points
to K1M (6):
red (fuse)
to K1M (2):
red
to rectifier:
white
to rectifier:
white
to earth / ground:
green / yellow
(R20812)
to C1R (C terminal): black
X1M
to K1M (A1):
black
to K1M (A2):
black
to X1M (2):
white
to X1M (3):
white
(R20813)
V1R
(R20814)
Earth / ground wire

Si011358EA Sound Blankets
Removal Procedure 11
4. Sound Blankets
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Remove the sound
blanket (top).
The design of the sound
blankets varies depending
on the model.
Some models have no
sound blanket (top).
2Remove the sound
blanket (body).
Since the piping ports on the
sound blanket are torn
easily, remove the sound
blanket carefully.
Sound blanket
(top)
(R20894)
Sound blanket (body)
(R19264)

Capillary Tube Si011358EA
12 Removal Procedure
5. Capillary Tube
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
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.
Restore the piping by non-oxidation brazing.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin.
In case of difficulty with gas brazing machine
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Remove the putty. Heat
up the 2 brazed parts
and remove the
capillary tube.
The shape of the capillary
tube varies depending on the
model.
Capillary tube
Brazed part
(R19265)
Brazed part
(R19266)
(R20891)
Capillary tube

Si011358EA Compressor ASSY
Removal Procedure 13
6. Compressor ASSY
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
exposed to flames, toxic gas may be generated.)
Since it may happen that the refrigerant oil in the compressor catches fire, prepare wet
cloth so as to extinguish fire immediately.
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.
Restore the piping by non-oxidation brazing.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin.
In case of difficulty with gas brazing machine
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Remove the nut and
remove the terminal
cover.
The shape of the terminal
cover varies depending on
the model.
(R15187)
Terminal cover

Compressor ASSY Si011358EA
14 Removal Procedure
2 Disconnect the
compressor lead wires.
RN series
ARM, RM series
RNE series
S: yellow
C: blue
R: red
3 Remove the gasket.
4 Remove the 3 screws
of the partition plate.
5 Remove the partition
plate.
When reassembling, insert A
into B.
Step Procedure Points
(R15188)
S
R
(R20893)
C
(R20810)
C
R
S
(R20811)
R
C
S
(R15189)
Gasket
(R19344)
(R15191)
Partition plate
A
B

Si011358EA Compressor ASSY
Removal Procedure 15
6 Remove the 3 nuts of
the compressor.
7
8
Heat up the brazed part
of the discharge side
pipe and disconnect it.
Heat up the brazed part
of the suction side pipe
and disconnect it.
9 Lift up the compressor
ASSY and remove it.
Step Procedure Points
(R15194)
Compressor
(R20815)
Brazed part of the
discharge side pipe
Brazed part of the
suction side pipe
(R15196)
Compressor ASSY

Revision History
Month / Year Version Revised contents
08 / 2013 Si011358E First edition
09 / 2014 Si011358EA Model addition: ARM18MV2S, RM18NV2S, RM50JV14, RM50KV1V, RNE60LV1,
RNE60MV1, RNE60MV14, RNE60MV1V

Head Office:
Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,
Kita-ku, Osaka, 530-8323 Japan
Tokyo Office:
JR Shinagawa East Bldg., 2-18-1, Konan,
Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com/products/ac/
All rights reserved
c
Warning
zDaikin products are manufactured for export to numerous countries throughout the world. Prior to
purchase, please confirm with your local authorised importer, distributor and/or retailer whether this
product conforms to the applicable standards, and is suitable for use, in the region where the product
will be used. This statement does not purport to exclude, restrict or modify the application of any local
legislation.
zAsk a qualified installer or contractor to install this product. Do not try to install the product yourself.
Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
zUse only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or
contractor to install those parts and accessories. Use of unauthorised parts and accessories or
improper installation of parts and accessories can result in water or refrigerant leakage, electrical
shock, fire or explosion.
zRead the user's manual carefully before using this product. The user's manual provides important
safety instructions and warnings. Be sure to follow these instructions and warnings.
If you have any enquiries, please contact your local importer, distributor and/or retailer.
Cautions on product corrosion
1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced.
2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided. If you need to install
the outdoor unit close to the sea shore, contact your local distributor.
Dealer
zSpecifications, designs and other content appearing in this brochure are current as of September 2014 but subject to change without notice. Si011358EA
09/2014 AK.B