Daikin RE12JV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
12000/18000 Btu/h Class
Outdoor Unit
Non-Inverter
Pair Type
Si01-983

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only
RE12JV2S
RE18JV2S

Si01-983
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels / Fan Motor.....................................................2
2. Removal of Electrical Components .......................................................10
3. Removal of Sound Blankets..................................................................14
4. Removal of Capillary Tube (Pattern 1)..................................................15
5. Removal of Capillary Tube (Pattern 2)..................................................16
6. Removal of Compressor ASSY.............................................................17
Note: The illustrations may be slightly different depending on the model.

Removal of Outer Panels / Fan Motor Si01-983
2Removal Procedure
1. Removal of Outer Panels / 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
1. Appearance features
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
2. Remove the panels.
The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
1Remove the screw of
the stop valve cover.
Pull down the stop
valve cover and remove
it.
(R15226)
(R16332)
Stop
valve
cover
(R7188)
Shield plate
Hook
(R15256)

Si01-983 Removal of Outer Panels / Fan Motor
Removal Procedure 3
2Remove the 3 screws
and remove the top
panel.
3Remove the 4 screws
and remove the
discharge grille.
The discharge grille has 4
hooks.
Step Procedure Points
Top panel
(R15227)
(R15257)
(R16411)

Removal of Outer Panels / Fan Motor Si01-983
4Removal Procedure
4Remove the 8 screws
and remove the front
panel.
5Unfasten the hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
Step Procedure Points
(R15228)
Front panel
Hook
(R16412)

Si01-983 Removal of Outer Panels / Fan Motor
Removal Procedure 5
3. Remove the fan motor. Nut size: M6
1Remove the nut of the
outdoor fan.
2Remove the outdoor
fan.
Align the mark of the
outdoor fan with the D-cut
section of the motor shaft
when reassembling.
3Pull out the 2 terminals
(red, white) from the fan
capacitor (C2R).
Fan capacitor (C2R)
Terminal board (X1M)
4Pull out the terminal
(black) from the
terminal board X1M (2).
5Release the fan motor
lead wire from the hook.
Step Procedure Points
(R15230)
Outdoor fan
10 mm
(R12236)
D-cut
(R7197)
(R16573)
Fan capacitor
Terminal
board
Hook
(R16409)
to fan motor
(white)
to fan motor
(red)
to terminal board
X1M(1): red
(R15260)
to fan motor
(upper: black)
X1M
(2)

Removal of Outer Panels / Fan Motor Si01-983
6Removal Procedure
6Remove the screw and
remove the fan motor
fixing frame.
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.
Step Procedure Points
(R15232)
Fan motor fixing frame
(R15233)
(R3249)
Lead wire Outdoor fan
(R7206)

Si01-983 Removal of Outer Panels / Fan Motor
Removal Procedure 7
7Release the fan motor
lead wire from the
hooks.
8Remove the 4 screws
and remove the fan
motor.
Step Procedure Points
(R15234)
(R15235)
Fan
motor

Removal of Outer Panels / Fan Motor Si01-983
8Removal Procedure
4. Remove the right side
panel.
1Remove the 3 screws
and disconnect the
connecting wire.
2Remove the screw and
remove the wire clamp.
3Lift up and remove the
guard net.
4Remove the 2 screws
on the rear side.
Step Procedure Points
(R15377)
Wire
clamp
Connecting
wire
Guard net
(R8284)
(R15237)

Si01-983 Removal of Outer Panels / Fan Motor
Removal Procedure 9
5Remove the 4 screws
on the right side.
6Remove the screw near
the connection port.
7Unfasten the hook of
the right side panel.
When reassembling, make
sure to fit the hook.
8Remove the right side
panel.
Step Procedure Points
(R15238)
Right side
panel
(R15239)
(R15240)
(R15241)

Removal of Electrical Components Si01-983
10 Removal Procedure
2. Removal of Electrical Components
Procedure Warning Be sure to for wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Remove the nut and
remove the terminal
cover.
Preparation
Remove the outer panels
and disconnect the
connector for the fan motor
according to the “Removal of
Outer Panels / Fan Motor”.
2Disconnect the
compressor lead wires.
S(W) : Yellow
C(U) : Blue
R(V) : Red
3Lift and remove the
electrical components
ASSY.
(R12790)
Terminal cover
(R12791)
Compressor lead wire
(R6761)
S(W)
R(V)
C(U)
(R12792)
Electrical Components ASSY

Si01-983 Removal of Electrical Components
Removal Procedure 11
4The layout of the
electrical components
and connectors is
different by models.
Pattern 1
Step Procedure Points
X11A
X1M
C2R
C1R
(R10848)
C2R X11A
C1R
(R10849)
X1M
X1M(1): red White
X11A
C1R
X1M(2):black
X1M(1)
Red
(R10850) (R10851)
Compressor(R): red Compressor(S): yellow
C2R
Compressor(C): blue
X11A: black
Upper
C2R: red
C1R: red
Lower
SECT. A-A A
AX1M (R10852)
Earth: green/yellow
X1M(1)
X1M(2)
X1M(GRD)

Removal of Electrical Components Si01-983
12 Removal Procedure
Pattern 2
Step Procedure Points
X11A
K1M
X2M
X1M
C1R
C2R
REC
(R10853)
A2
5
4
A1
X1M
3
1
X2M
C1R
K1M
14
2
13
6
C2R
F1S
X11A
REC
(R10854)
C1R
: red : yellow
Compressor (S)
Compressor (R)
K1M(4): red
(R10855)
C2R
X11A
REC: white
REC: white
K1M(6): black
white
red
(R10856)

Si01-983 Removal of Electrical Components
Removal Procedure 13
Step Procedure Points
REC
K1M(A1): black
K1M(A2): black
X2M(N): white
X1M(2): white
C2: white
(R10857)
X1M(2)
: green / yellow
Earth: green / yellow
X1M(1): red
X2M(GRD)
X2M(N)
X1M(3): black
X2M(N): black
X1M(3)
K1M(3): black
X2M(L)
A
A
C2: white
REC: white
Lower
SECT. A-A
X1M(GRD): green / yellow
F1S: red
K1M(5): black
Upper
X2M(GRD)
X1M(GRD)
X1M(1)
X2M(L): red
K1M(1): red
L N
123
X1M
X2M
(R10858)

Removal of Sound Blankets Si01-983
14 Removal Procedure
3. Removal of Sound Blankets
Procedure 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).
Preparation
Remove the outer panels
according to the “Removal of
Outer Panels / Fan Motor”.
Remove the electrical
components ASSY
according to the “Removal of
Electrical Components
ASSY”.
2Untie the 2 strings and
open the sound blanket
(body).
3Remove the sound
blanket (body).
Since the piping ports on the
sound blanket are torn
easily, remove the sound
blanket carefully.
(R15242)
Sound
blanket
(body)
Sound
blanket
(top)
(R15243)

Si01-983 Removal of Capillary Tube (Pattern 1)
Removal Procedure 15
4. Removal of Capillary Tube (Pattern 1)
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
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.
Warning
Be careful not to get yourself
burnt with the pipes and other
parts that are heated by the
gas brazing machine.
Warning
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.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
2. Avoid excessive heating.
(Keep below 120°C)
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.
1 Remove the putty. Heat
up the 2 brazed parts
and remove the
capillary tube.
Note:
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 heat exchanger fin.
(R16377)
Brazed part
Capillary tube
Brazed part
Putty
(R16378)

Removal of Capillary Tube (Pattern 2) Si01-983
16 Removal Procedure
5. Removal of Capillary Tube (Pattern 2)
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
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.
Warning
Be careful not to get yourself
burnt with the pipes and other
parts that are heated by the
gas brazing machine.
Warning
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.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
2. Avoid excessive heating.
(Keep below 120°C)
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.
1 Remove the putty. Heat
up the 2 brazed parts
and remove the
capillary tube.
Note:
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 heat exchanger fin.
Brazed part
Putty
(R15460)
(R15461)
Brazed
part
Capillary
tube
(R15490)

Si01-983 Removal of Compressor ASSY
Removal Procedure 17
6. Removal of Compressor ASSY
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Remove the nut and
remove the terminal
cover.
2Disconnect the
compressor lead wires.
S(W) : yellow
C(U) : blue
R(V) : red
3Remove the 3 nuts of
the compressor.
(R15244)
Terminal
cover
(R15245)
S(W)
C(U)
R(V) (R15393)
(R15442)

Removal of Compressor ASSY Si01-983
18 Removal Procedure
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.
Warning
Be careful not to get yourself
burnt with the pipes and other
parts that are heated by the
gas brazing machine.
Warning
If the refrigerant gas leaks
during work, ventilate the
room. (If the refrigerant gas is
exposed to flames, toxic gas
may be generated.)
Warning
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.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
2. Avoid excessive heating.
(Keep below 120°C)
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.
4Heat up the brazed part
of the discharge side
and disconnect.
5
6
Heat up the brazed part
of the suction side and
disconnect.
Lift the compressor
ASSY up and remove it.
Note:
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 heat exchanger fin.
Step Procedure Points
(R15443)
Discharge
side
(R15444)
Suction side
(R15471)
Compressor ASSY