Daikin Si011187 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
2.5/3.5 kW Class
Outdoor Unit
Non-Inverter
Pair Type
Si011187

Service Manual
Removal Procedure
Outdoor Unit
Applicable Models
zCooling Only
RN25HV1G
RN35HV1G

Si011187
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels / Fan Motor.....................................................2
2. Removal of Electrical Components .........................................................9
3. Removal of Sound Blanket....................................................................15
4. Removal of Compressor ASSY.............................................................16
Note: The illustrations may be slightly different depending on the model.

Removal of Outer Panels / Fan Motor Si011187
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. External appearance
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
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.
(R7186)
(R3236)
(R7188)
Stop
valve
cover
Shield plate
Hook
(R7189)

Si011187 Removal of Outer Panels / Fan Motor
Removal Procedure 3
2. Remove the panels.
1Remove the 3 screws
and lift the top panel.
2Remove the 8 screws
of the front panel.
3Release the 4 hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
Step Procedure Points
Top panel
(R11415)
(R11417)
Front panel
Hook
(R11418)

Removal of Outer Panels / Fan Motor Si011187
4Removal Procedure
4Remove the 4 screws
of the discharge grille.
The discharge grille can be
removed with the front grille
on.
5Remove the discharge
grille.
The discharge grille has 4
hooks.
3. Remove the fan motor. Nut size: M6
1Unscrew the nut of the
outdoor fan.
Step Procedure Points
(R11419)
Discharge grille
Hook
(R11420)
Outdoor fan
(R15511)
10 mm
(R12236)

Si011187 Removal of Outer Panels / Fan Motor
Removal Procedure 5
2Remove the outdoor
fan.
Align mark of the outdoor
fan with D-cut section of the
motor shaft when
reassembling.
3Disconnect the relay
connector for the fan
motor.
4Release the fan motor
lead wire from the fixing
hook.
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.
Step Procedure Points
D-cut
(R11422)
(R11416)
Fan motor
lead wire
(R11423)
(R3249)
Lead wire Outdoor fan

Removal of Outer Panels / Fan Motor Si011187
6Removal Procedure
5
6
Remove the screw of
the fan motor fixing
frame.
Remove the fan motor
fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
Step Procedure Points
Fan motor fixing frame
(R11424)
(R11425)
(R7206)

Si011187 Removal of Outer Panels / Fan Motor
Removal Procedure 7
7Release the fan motor
lead wire from the 2
fixing hooks.
8Remove the 4 screws
of the fan motor and
remove the fan motor.
M4 × 16
Step Procedure Points
(R11426)
(R15495)
Fan motor

Removal of Outer Panels / Fan Motor Si011187
8Removal Procedure
4. Remove the right side
panel.
1Lift up and remove the
guard net.
2Remove the 7 screws
on the right side panel.
3Release the hook. When reassembling, make
sure to engage the hook.
4Lift up the right side
panel and remove it.
Step Procedure Points
Guard net
(R11428)
Right side panel
(R11429)
(R11430)
(R11431)

Si011187 Removal of Electrical Components
Removal Procedure 9
2. 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 electrical
component ASSY.
Preparation
Remove the top panel and
disconnect the connector for
the fan motor according to
the “Removal of outer
Panels / Fan Motor”.
1Lift and remove the
sound blanket (top).
2Remove the nut and
remove the terminal
cover.
3Disconnect the
compressor lead wires
with a flat screwdriver.
S(W) : yellow
C(U) : blue
R(V) : red
4Lift and remove the
electrical component
ASSY.
(R11439)
Sound blanket
(top)
(R11440)
Terminal
cover
(R11441)
Compressor
lead wire
S(W)
(R6761)
C(U)
R(V)
Electrical component ASSY
(R11442)

Removal of Electrical Components Si011187
10 Removal Procedure
2. Remove the electrical
components.
Compressor capacitor (C1R)
Compressor lead wire
S(W) : yellow
C(U) : blue
R(V) : red
1Disconnect the 3
connectors of the
compressor capacitor
(C1R).
2Remove the screw and
remove the compressor
capacitor.
3Cut the clamp.
4Disconnect the 5
connectors.
Step Procedure Points
(R15494)
Compressor
capacitor (C1R)
K1M(4): red
(R17470)
Compressor (R
terminal) : red
Compressor (S
terminal) : yellow
S(W)
(R6761)
C(U)
R(V)
(R11451)
(R11452)
(R11453)
C2R: white
X2M(N)
: white
K1M(A1)
: black X1M(2)
: white
K1M(A2)
: black

Si011187 Removal of Electrical Components
Removal Procedure 11
Diode bridge (V1R)
5Remove the screw and
remove the diode
bridge (V1R).
6Disconnect the 2
remaining connectors
of the fan capacitor
(C2R).
Fan capacitor (C2R)
Step Procedure Points
K1M(A1): black
K1M(A2): black
X2M(N): white
X1M(2): white
C2R: white
(R15496)
Diode bridge
(V1R)
(R15497)
(R15498)
Fan capacitor
(C2R)
X11A
V1R: white
X2M(N): white
K1M(6): black
white
red
(R15499)

Removal of Electrical Components Si011187
12 Removal Procedure
7Remove the screw and
remove the fan
capacitor.
8Disconnect the
connector of the surge
absorber (F1S).
9Remove the screw and
remove the surge
absorber.
10 Disconnect all the
connectors of the
magnetic contactor
(K1M).
Step Procedure Points
(R11456)
(R15500)
Surge absorber (F1S)
Surge absorber
(R11458)
(R15501)
Magnetic contactor (K1M)

Si011187 Removal of Electrical Components
Removal Procedure 13
11 Remove the 2 screws
and remove the
magnetic contactor.
12 Open the fuse holder.
Take the fuse out.
Step Procedure Points
(R11460)
Fuse
Fuse holder
(R11461)
C1R
X11A
K1M
V1R X1M
X2M
Fuse
C2R
(R11487)
F1S
C1R
X11A
X2M
X1M
K1M
C2R
V1R
(R11488)

Removal of Electrical Components Si011187
14 Removal Procedure
Step Procedure Points
X1M(2)
Earth: green / yellow
X1M(1): red
X2M(earth)
X2M(N)
X1M(3): black
X2M(N): black
X1M(3)
K1M(3): black
X2M(L)
A
A
C2R: white
V1R: white
Lower
SECT. A-A
X1M(earth): green / yellow
F1S: red
K1M(5): black
Upper
X1M(earth)
X1M(1)
X2M(L): red
K1M(1): red
L N
123
X1M
X2M
(R17471)
X2M(earth) : green / yellow

Si011187 Removal of Sound Blanket
Removal Procedure 15
3. Removal of Sound Blanket
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 sound
blanket.
Preparation
Remove the outer panels
and the electrical
components ASSY
according to the “Removal of
Outer Panels / Fan Motor”
and “Removal of Electrical
Components”.
1Untie the strings and
open the sound blanket
(body).
2Remove the sound
blanket (body).
Since the piping ports on the
sound blanket are torn
easily, remove the blanket
carefully.
(R11462)
Sound blanket
(body)
(R11463)

Removal of Compressor ASSY Si011187
16 Removal Procedure
4. 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 3 nuts of
the compressor ASSY. 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.
2Heat up the brazed part
of the discharge side
and disconnect.
3Heat up the brazed part
of the suction side and
disconnect.
(R15502)
Compressor ASSY
(R11465)
(R11466)

Si011187 Removal of Compressor ASSY
Removal Procedure 17
4Lift 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 fins.
Step Procedure Points
(R11467)

Revision History
Month / Year Version Revised contents
08/2012 Si011187 First edition