Daikin RE50NRV16 User manual

5.0/6.0 kW Class
REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Non-Inverter
Pair Type
Si011281E

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only
RE50NRV16
RE60NRV16
REL50NRV16
REL60NRV16

Si011281E
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................3
3. Electrical Components ............................................................................5
4. Capillary Tube .........................................................................................8
5. Compressor ASSY ................................................................................10
Note: The illustrations may be slightly different depending on the model.

Outer Panels Si011281E
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
1Remove the 4 screws
and remove the top
panel.
2Remove the 7 screws
of the front panel.
3Unfasten the 2 hooks of
the right side and
remove the front panel.
4Remove the screw on
the discharge grille.
5The discharge grille has
2 projections to prevent
its rotation. Press the
projection from the rear
side and rotate the
discharge grille to
remove it.
Top panel
Front panel (R18599)
Discharge grille
Projection
(R18600)

Si011281E Outdoor Fan / Fan Motor
Removal Procedure 3
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
1Pull out the 2 terminals
(red, white) from the fan
motor capacitor (C2).
Fan motor capacitor (C2)
2Pull out the 2 terminals
(black: 3_upper, green /
yellow: _upper) from
the terminal board
(X1M).
3Release the fan motor
lead wire from the hook.
4Remove 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.
Fan motor lead wire
Fan motor capacitor Terminal board
(R18989)
Hook
to fan motor:
red
to terminal board
X1M (2_lower): blue
to fan motor:
white
(R19013)
Outdoor fanNut
D-cut
(R18991)
10 mm
(0.39 inch)
(R18954)

Outdoor Fan / Fan Motor Si011281E
4Removal Procedure
5Remove the screw and
remove the fan motor
fixing plate.
Be careful so as not to
damage the top part of the
outdoor heat exchanger fins.
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.
When reassembling, fit the
lower hooks into the bottom
frame.
6Unfasten the 2 hooks
and release the fan
motor lead wire.
7Remove the 4 screws
and remove the fan
motor.
Screw size: M4 × 16
Step Procedure Points
Fan motor fixing plate
(R18990)
(R3249)
Lead wire Outdoor fan
(R15385)
(R19009)
Hook
Fan motor
(R18992)

Si011281E Electrical Components
Removal Procedure 5
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
1. Remove the right side
panel.
The stop valve cover has 3
hooks.
1Remove the screw and
remove the stop valve
cover.
2Remove the 3 screws
and remove the wire
fixture.
3Remove the 7 screws
on the terminal board
and disconnect the
connecting wire and the
power supply wire.
4Remove the 2 screws
on the right side
(upper).
(R18993)
Stop valve cover
Wire fixture
Power supply wire
Connecting wire
(R18994)
(R19010)

Electrical Components Si011281E
6Removal Procedure
5Remove the 2 screws
on the right side
(lower).
6Remove the 3 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
(R18995)
(R18998)
(R18996)
Right side panel
(R15171)

Si011281E Electrical Components
Removal Procedure 7
2. Remove the electrical
component ASSY.
Compressor motor capacitor
(C1)
1Pull out all the 3
terminals from the
compressor motor
capacitor (C1).
2Pull out the terminal
(white: 3_lower) from
the terminal board
(X1M).
3Remove the screw and
remove the electrical
component ASSY.
Step Procedure Points
Compressor motor capacitor
Terminal board (R18997)
white, 3 lower
(R19151)
(R19011)
to compressor (S): red
to compressor (R): blue
to terminal board
(2_upper): blue
Electrical component ASSY
(R18999)
(R19000)
Compressor motor capacitor
Terminal
board
Fan motor capacitor

Capillary Tube Si011281E
8Removal Procedure
4. 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.
Cautions for restoration
1. Restore the piping by non-oxidation brazing.
2. It is required to prevent the carbonization of the oil inside the four way valve and the
deterioration of the gaskets affected by heat. (Keep below 120°C (248°F).) For the sake of
this, wrap the four way valve with wet cloth and provide water so that the cloth does not
dry.
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
1Cut the 2 clamps.
(R19001)

Si011281E Capillary Tube
Removal Procedure 9
2Remove the protection
net.
3Heat up the 2 brazed
parts and remove the
capillary tube.
The design of capillary tube
varies depending on the
model.
Step Procedure Points
Protection net
(R19002)
Capillary tube (R19003)

Compressor ASSY Si011281E
10 Removal Procedure
5. 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.
Cautions for restoration
1. Restore the piping by non-oxidation brazing.
2. It is required to prevent the carbonization of the oil inside the four way valve and the
deterioration of the gaskets affected by heat. (Keep below 120°C (248°F).) For the sake of
this, wrap the four way valve with wet cloth and provide water so that the cloth does not
dry.
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 nut. The design of the terminal
cover varies depending on
the model.
2Remove the terminal
cover.
(R19004)
Terminal
cover
Nut

Si011281E Compressor ASSY
Removal Procedure 11
3Disconnect the
compressor lead wires.
Pattern 1
S (W): red
C (U): white
R (V): blue
Pattern 2
S: red
C: white
R: blue
Pattern 3
S: red
C: white
R: blue
When reassembling, fit the
lower hook into the bottom
frame.
4Remove the gasket.
5Remove the 3 screws
and remove the
partition plate.
Step Procedure Points
Gasket
Compressor lead wire
(R19005)
R(V)
S(W)
C(U)
(R19014)
C
S
R
(R19015)
S
C
R
(R19016)
Partition plate
(R19006)
Hook

Compressor ASSY Si011281E
12 Removal Procedure
6 Remove the 3 nuts of
the compressor.
7 Heat up the brazed part
of the discharge side
and disconnect.
8 Heat up the brazed part
of the suction side and
disconnect.
9 Lift the compressor
ASSY up and remove it.
Step Procedure Points
(R19007)
Compressor
Suction side
Compressor ASSY (R19008)
Discharge
side

Revision History
Month / Year Version Revised contents
06 / 2013 Si011281E First edition

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/global_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
z
Specifications, designs and other content appearing in this brochure are current as of June 2013 but subject to change without notice.
Si011281E
06/2013 AK.B