Daikin RKM71PV16 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
7.1 kW Class
Outdoor Unit
Inverter
Pair Type
Si001408EA

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only
RKM71PV16
RKM71QV16

Si001408EA
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................4
3. Electrical Box ..........................................................................................7
4. PCB.......................................................................................................11
5. Partition Plate / Sound Blankets............................................................13
6. Electronic Expansion Valve...................................................................15
7. Compressor...........................................................................................17
Note: The illustrations may be slightly different depending on the model.

Outer Panels Si001408EA
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 4 screws
of the discharge grille.
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
3Slide the discharge
grille upward and
remove it.
The discharge grille has 6
hooks.
4Remove the 6 screws
of the front panel.
Discharge grille
Top panel
(R20302)
(R20303)
Hook
Hook
Front panel
(R20304)

Si001408EA Outer Panels
Removal Procedure 3
5
6
Unfasten the right side
hook.
Unfasten the 3 left side
hooks and remove the
front panel.
7
8
Remove the screw of
the stop valve cover.
Pull down the stop
valve cover to unfasten
the hooks and remove
it.
The stop valve cover has 6
hooks.
Step Procedure Points
(R20305)
Stop valve cover (R20306)
(R20307)

Outdoor Fan / Fan Motor Si001408EA
4Removal 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
1Remove the shield
plate.
2Cut the clamp.
3Disconnect the
connector [S70] and
release the fan motor
lead wire from the
groove.
[S70]: fan motor
Shield plate
(R20308)
Clamp
(R20309)
[S70]
Groove
(R20310)

Si001408EA Outdoor Fan / Fan Motor
Removal Procedure 5
4Release the fan motor
lead wire from the hook
of the outdoor heat
exchanger.
5Remove the nut and
remove the outdoor fan.
Nut size: M6
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
6
7
8
Remove the 2 screws
of the fan motor fixing
frame.
Pull up the fan motor
fixing frame to unfasten
the 2 hooks at the
bottom.
Remove the fan motor
fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
Step Procedure Points
Hook
(R20311)
Nut
Outdoor fan
(R20312)
10 mm
(0.39 inch)
(R18954)
(R20313)
(R20314)

Outdoor Fan / Fan Motor Si001408EA
6Removal Procedure
9Open the 3 hooks and
release the fan motor
lead wire.
10 Remove the 4 screws
and remove the fan
motor.
When reassembling, put the
fan motor lead wire through
the back of the fan motor so
as not to be entangled with
the outdoor fan.
Step Procedure Points
Hook
(R20315)
Fan motor
(R20316)
(R3249)
Lead wire Outdoor fan

Si001408EA Electrical Box
Removal Procedure 7
3. Electrical Box
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Remove the 2 screws
and remove the
protection plate.
2
3
Remove the 3 screws
and remove the wire
fixture.
Remove the 7 screws
on the terminal board
and disconnect the
connecting wire and
power supply wire.
4Remove the earth /
ground screw.
Protection plate
(R20317)
Wire fixture
Connecting wire
Power supply
wire
(R20318)
Terminal
board
Earth / ground
wire
(R20319)

Electrical Box Si001408EA
8Removal Procedure
5Release the outdoor
temperature thermistor.
6Remove the 4 screws
of the right side panel.
7Unfasten the 3 hooks
and remove the right
side panel.
Step Procedure Points
Outdoor temperature thermistor
(R20320)
Right side panel (R20321)
Hook
Hook (R20322)
When reassembling, insert
the upper hook and the
lower hooks back into place.

Si001408EA Electrical Box
Removal Procedure 9
8
9
Cut the clamp.
Pull out the outdoor
heat exchanger
thermistor.
Be careful not to lose the clip
for the thermistor.
10 Disconnect the
connector [S40].
[S40]: overload protector
11
12
Disconnect the
connector [S20].
Disconnect the relay
connector for
compressor.
[S20]: electronic expansion
valve coil
Step Procedure Points
Outdoor heat
exchanger
thermistor
Clamp
(R20324)
Clip
(R3264)
[S40]
(R20325)
Relay connector
for compressor
[S20]
(R20326)

Electrical Box Si001408EA
10 Removal Procedure
13 Open the sound blanket
(top upper) and detach
the discharge pipe
thermistor.
Be careful not to lose the
fixture for the thermistor.
14 Remove the 2 screws
and remove the
electrical box.
Step Procedure Points
Discharge pipe
thermistor
Sound blanket
(top upper)
(R20328)
(R20323)
Fixture
Electrical box
(R20329)

Si001408EA PCB
Removal Procedure 11
4. PCB
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Remove the screw and
release the earth /
ground wire.
2Pull out the 3 clamps.
3
4
Cut the clamp.
Pull out the terminals
from the terminal board.
Before pulling out the
terminals, confirm the
terminal locations.
(1): black (back)
(2): white (back)
(3): red (front)
: yellow / green (back)
Earth / ground screw
(R20330)
(R20331)
Clamp
Clamp
(R20332)

PCB Si001408EA
12 Removal Procedure
5Remove the 2 screws
and remove the
electrical component
mounting plate.
6Remove the 7 screws.
7Lift up and remove the
PCB.
Step Procedure Points
(R20334)
(R20335)
PCB
(R20336)

Si001408EA Partition Plate / Sound Blankets
Removal Procedure 13
5. Partition Plate / 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 2 screws
and remove the
partition plate.
When reassembling, fit the 2
lower hooks into the bottom
frame.
2Remove the sound
blanket (top upper).
Since the piping ports are
torn easily, remove the
sound blankets carefully.
3Remove the sound
blanket (outer).
Partition plate
(R20337)
Hook
(R20338)
Sound blanket
(top upper)
(R20339)
Sound blanket
(outer)
(R20340)

Partition Plate / Sound Blankets Si001408EA
14 Removal Procedure
4Remove the sound
blanket (top lower).
5Remove the sound
blanket (inner).
Step Procedure Points
Sound blanket
(top lower)
(R20341)
Sound blanket (inner) (R20342)

Si001408EA Electronic Expansion Valve
Removal Procedure 15
6. Electronic Expansion Valve
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
1Remove the terminal
cover. Terminal cover
(R20343)

Electronic Expansion Valve Si001408EA
16 Removal Procedure
2
3
4
Pull out the compressor
lead wires.
Remove the overload
protector.
Remove the protection
bushing.
5Pull out the electronic
expansion valve coil.
6
7
Remove the sheets of
putty.
Heat up the 2 brazed
parts and remove the
electronic expansion
valve.
Step Procedure Points
Overload
protector
Protection bushing
V (yellow)
U (red)
W (blue)
(R20344)
Electronic
expansion
valve coil
(R20345)
Brazed part
Brazed part
Putty
Electronic
expansion
valve
(R20346)

Si001408EA Compressor
Removal Procedure 17
7. Compressor
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
1Remove the terminal
cover. Terminal cover
(R20343)

Compressor Si001408EA
18 Removal Procedure
2
3
4
Pull out the compressor
lead wires.
Remove the overload
protector.
Remove the protection
bushing.
5
6
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.
Remove the 3 nuts.
Lift up the compressor
and remove it.
Step Procedure Points
Overload
protector
Protection bushing
V (yellow)
U (red)
W (blue)
(R20344)
Compressor
Nut
Brazed part of
discharge side pipe
Brazed part of
suction side pipe
(R20347)