Daikin RE18MV2S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
18000 Btu/h Class
Outdoor Unit
Non-Inverter
Pair Type
Si011193

Service Manual
Removal Procedure
Outdoor Unit
Applicable Model
zCooling Only
RE18MV2S

Si011193
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels ........................................................................2
2. Removal of Outdoor Fan / Fan Motor .....................................................4
3. Removal of Electrical Components .........................................................6
4. Removal of Sound Blankets..................................................................14
5. Removal of Capillary Tube....................................................................15
6. Removal of Compressor ASSY.............................................................16

Removal of Outer Panels Si011193
2Removal Procedure
1. Removal of Outer Panels
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 4 screws
and remove the top
panel.
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
2Remove the 7 screws
of the front panel.
Top panel
(R15386)
(R15384)
(R15387)
Front panel

Si011193 Removal of Outer Panels
Removal Procedure 3
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.
Step Procedure Points
(R15156)
Discharge grille
(R14277)

Removal of Outdoor Fan / Fan Motor Si011193
4Removal Procedure
2. Removal of Outdoor Fan / 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
1Pull out the 2 terminals
[A1] [B1] from the fan
capacitor (C12R).
Fan capacitor (C12R)
Magnetic contactor (K1M)
2Pull out the terminal [5]
from the magnetic
contactor (K1M).
3Release the fan motor
lead wire from the hook.
4Remove the screw of
the fan motor fixing
plate.
5Remove the fan motor
fixing plate.
Be careful so as not to
damage the top part of the
outdoor heat exchanger fins.
Put the lead wire through the
back of the motor when
reassembling so as not to be
entangled with the outdoor
fan.
(R15157)
Magnetic contactor
Fan motor lead wire
Fan capacitor to fan motor
(red)
to fan motor
(white) (R15394)
B1 B2
A1 A2
A2 14 6 4 2
A1 13 531
to fan motor
(black) (R15395)
(R15158)
(R15159)
Fan motor
fixing plate
(R3249)
Lead wire Outdoor fan

Si011193 Removal of Outdoor Fan / Fan Motor
Removal Procedure 5
6
7
8
Remove the nut and
remove the outdoor fan.
Unfasten the 2 hooks.
Release the fan motor
lead wire.
Remove the 4 screws
and remove the fan
motor.
When reassembling, fit the
lower hooks into the bottom
frame.
Nut size: M6
Align the mark of the
outdoor fan with the D-cut
section of the motor shaft
when reassembling.
M4 × 16
Step Procedure Points
(R15385)
(R15160)
Outdoor
fan
D-cut
(R15161)
Hook
Fan motor
(R15162)
10 mm
(R12236)

Removal of Electrical Components Si011193
6Removal Procedure
3. Removal of Electrical Components
Procedure 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 right side
panel.
1Remove the screw and
remove the stop valve
cover.
The stop valve cover has 3
hooks.
2Remove the 3 screws
and remove the wire
clamp.
(R15163)
Stop valve cover
(R15164)
Wire clamp
(R15165)

Si011193 Removal of Electrical Components
Removal Procedure 7
3Remove the 7 screws
and disconnect the
connecting wires.
4Remove the 2 screws
on the right side
(upper).
5Remove the 2 screws
on the right side
(lower).
Step Procedure Points
(R15388)
Connecting
wires
(R15166)
(R15167)

Removal of Electrical Components Si011193
8Removal Procedure
6Remove the 2 screws
on the rear side.
7Unfasten the hook.
8Remove the right side
panel.
The right side panel has 2
hooks at the bottom.
Step Procedure Points
(R15168)
(R15169)
(R15170)
Right side panel
(R15171)

Si011193 Removal of Electrical Components
Removal Procedure 9
2. Remove the electrical
component ASSY.
Fan capacitor (C12R)
Magnetic contactor (K1M)
1Pull out the 2 terminals
[A1] [B1] from the fan
capacitor (C12R).
2Pull out the terminal [5]
from the magnetic
contactor (K1M).
3Release the fan motor
lead wire from the hook.
4Pull out the terminal [1]
from the magnetic
contactor (K1M).
5Pull out the 2 terminals
[A1] [B1] from the
compressor capacitor
(C11R).
Magnetic contactor (K1M)
Compressor capacitor
(C11R)
Compressor lead wire
S(W) : yellow
C(U) : blue
R(V) : red
6Lift and remove the
electrical component
ASSY.
Step Procedure Points
to fan motor
(red)
to fan motor
(white) (R15394)
B1 B2
A1 A2
A2 14 6 4 2
A1 13 531
to fan motor
(black) (R15395)
(R15157)
Magnetic contactor
Fan motor lead wire
Fan capacitor
(R15174)
Compressor capacitor
A2 14 6 4 2
A1 13 531
(R17474)
to compressor (C terminal):
blue
(R17473)
to compressor
(S terminal) :
yellow
to compressor
(R terminal) :
red
B2 A2
B1 A1
S(W)
C(U)
R(V)
(R15376)
(R15175)
Electrical component ASSY

Removal of Electrical Components Si011193
10 Removal Procedure
3. Remove the electrical
component.
1Open the fuse cover
and remove the fuse.
2Pull out the remaining
terminal [A2] from the
compressor capacitor
(C11R).
Compressor capacitor
(C11R)
3Remove the 2 screws
of the capacitor fixing
band.
4Remove the
compressor capacitor.
Step Procedure Points
(R15176)
Fuse
Fuse cover
(R15177)
A2
B1 A1
to magnetic contactor K1M(3): red
(R15400)
B2
(R15178)
Capacitor fixing band
(R15179)

Si011193 Removal of Electrical Components
Removal Procedure 11
5Pull out the terminal
[B2] from the fan
capacitor (C12R).
Fan capacitor (C12R)
6Remove the screw and
remove the fan
capacitor.
7Pull out the terminals
[2] [4] [6] [A1] [A2] from
the magnetic contactor
(K1M).
Step Procedure Points
(R15180)
(R15401)
to terminal board
X2M(N): red
B1 B2
A1 A2
(R15181)
(R15182)

Removal of Electrical Components Si011193
12 Removal Procedure
8Remove the 2 screws
and remove the
magnetic contactor.
9Cut the clamp.
10 Pull out the 2 terminals
for the diode bridge
from the terminal board.
Step Procedure Points
(R15183)
(R15184)
(R15185)
X1M(2): lower
(White)
X2M(N): upper
(White)

Si011193 Removal of Electrical Components
Removal Procedure 13
11 Remove the screw and
remove the diode
bridge.
12 Remove the screw of
the earth and 2 screws
of the terminal board.
13 Remove the terminal
board.
Step Procedure Points
(R15172)
Diode bridge
(R15173)
Earth

Removal of Sound Blankets Si011193
14 Removal Procedure
4. 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”.
Remove the electrical
components ASSY
according to the “Removal of
Electrical Components”.
2Remove the sound
blanket (body).
Since the piping ports on the
sound blanket are torn
easily, remove the sound
blanket carefully.
Sound blanket
(top)
(R15389
)
Sound blanket (body)
(R15390)

Si011193 Removal of Capillary Tube
Removal Procedure 15
5. Removal of Capillary Tube
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 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.
Capillary tube
(R15391)
(R15491)

Removal of Compressor ASSY Si011193
16 Removal Procedure
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
1
2
Remove the nut.
Remove the terminal
cover.
3 Disconnect the
compressor lead wires.
S(W) : yellow
C(U) : blue
R(V) : red
(R15186)
(R15187)
Terminal cover
(R15188)
S(W)
C(U)
R(V)
(R15376)

Si011193 Removal of Compressor ASSY
Removal Procedure 17
4 Remove the gasket.
5 Remove the 3 screws
of the partition plate.
6 Remove the partition
plate.
When reassembling, insert A
into B.
Step Procedure Points
(R15189)
Gasket
(R15190)
(R15191)
Partition plate
A
B

Removal of Compressor ASSY Si011193
18 Removal Procedure
7 Remove the 3 nuts of
the compressor. 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.
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.
8 Heat up the brazed part
of the discharge side
and disconnect.
9 Heat up the brazed part
of the suction side and
disconnect.
10 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
(R15194)
Compressor
(R15195)
Discharge side Suction side
(R15196)
Compressor ASSY