Daikin R71KV1 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Non-Inverter
Multi Type
3 HP Class
Si211311E

Service Manual
Removal Procedure
Outdoor Unit
Applicable Models
zCooling Only
R71KV1
R71KY1
R71KVAL
zHeat Pump
RY71KV1
RY71KY1

Si211311E
Removal Procedure 1
Table of Contents
1. Procedure to Remove External Casing...................................................2
2. Procedure to Remove Outdoor Unit Fan and Fan Motor ........................3
3. Procedure to Remove Outdoor Unit PCB ...............................................5
4. Procedure to Remove Electrical Parts Box .............................................6
5. Procedure to Remove Electronic Expansion Valve and
Solenoid Valve ........................................................................................8
6. Procedure to Remove Four Way Valve and Coil ....................................9
7. Procedure to Remove Compressor.......................................................10

Procedure to Remove External Casing Si211311E
2Removal Procedure
1. Procedure to Remove External Casing
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 8 top plate
screws.
2Remove the screw of
the front piping cover.
3Remove the screw of
the front casing and
remove by pushing
downward.
4Remove the 4 screws
of the side piping cover.
5Remove the 5 screws
of the rear/side casing.
Side piping
cover
Front piping
cover

Si211311E Procedure to Remove Outdoor Unit Fan and Fan Motor
Removal Procedure 3
2. Procedure to Remove Outdoor Unit Fan and 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
∗Remove the front piping
cover, etc., according to the
procedure for removing the
external casing.
1Remove the 4 screws
and disconnect the 8
tabs fastening the air
discharge grille on the
top/bottom and left/
right, and remove the
air discharge grille.
2Remove the fan clamp
fastening the propeller
fan; remove the nut and
washer.
Note:
The fan motor’s lead wire
cannot be disconnected as is.
You must first remove the screw
on the right side of the front
casing (1).
3Disconnect the motor
connector from the
PCB’s wiring connector,
and remove the
condenser.
Connector Condenser

Procedure to Remove Outdoor Unit Fan and Fan Motor Si211311E
4Removal Procedure
4Locate the 2 clamps
holding the fan motor
lead wire in place.
∗4 clamps in RY100 to
140K.
Caution during motor installation
Be sure to secure the motor
lead wire with the clamp. Loose
lead wire can be caught by fan
and damaged.
5Remove the 4 hexagon
bolts fastening the fan
motor, and remove the
fan motor.
6The motor base can be
dismounted by
removing the 4
hexagon bolts.
Step Procedure Points
Secured by tie-band
Clamped by claw
on divider plate
Lead wire Propeller fan

Si211311E Procedure to Remove Outdoor Unit PCB
Removal Procedure 5
3. Procedure to Remove Outdoor Unit PCB
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Remove the top plate, front
casing and side casing
according the procedure for
removing the external
casing, etc.
1Disconnect the
connectors from the
PCB.
2Unlatch the 4 tabs
fastening the PCB on
the left side, and
disconnect from the
hook on the right side.
3Remove the PCB.
PCB

Procedure to Remove Electrical Parts Box Si211311E
6Removal Procedure
4. Procedure to Remove Electrical Parts Box
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Remove the top plate, front
casing and side casing
according the procedure for
removing the external
casing, etc.
<In case of cooling only model>
<In the case of heat pump units>
If the lead wire is clamped by
the piping, etc., remove the
clamp.
1Remove the discharge
pipe, heat exchanger
and air thermistor. (If
not removing,
disconnect the
connector from the
PCB.)
1) Remove the
discharge pipe
thermistor.
2) Remove the heat
exchanger thermistor.
Thermistor installation spring
Thermistor
Thermistor installation spring
Pull up the
thermistor to
remove.
Stopper

Si211311E Procedure to Remove Electrical Parts Box
Removal Procedure 7
3) Remove the outdoor
air thermistor.
2Disconnect the motor
operated valve coil, and
crank case heater
connectors from the
PCB.
Note :
If not dismounting the rear/side
casing, remove the 2 screws of
the El. compo. box.
3Remove the El. compo.
box installation screw.
4Remove the El. compo.
box by pulling it toward
yourself and lifting. Caution
Be careful of the lead wire
protruding from the rear surface
of the El. compo. box.
Step Procedure Points

Procedure to Remove Electronic Expansion Valve and Solenoid Valve Si211311E
8Removal Procedure
5. Procedure to Remove Electronic Expansion Valve
and Solenoid Valve
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Make sure the refrigerant is
completely empty.
1Remove the electronic
expansion valve cover.
2The motor operated
valve is removed by
pulling while turning the
electronic expansion
valve coil’s lever.
3Use a metal plate or
protective sheet for
welding to prevent other
pipes from being
affected by the gas
welding flame.
Note:
When installing, apply the flame
while cooling with a leak cloth so
that the temperature of the main
body does not rise above
120ºC.
4Heart the brazed part
and remove.
Motor operated
valve cover
Motor operated
valve coil
Motor operated
valve
Protective sheet
for welding

Si211311E Procedure to Remove Four Way Valve and Coil
Removal Procedure 9
6. Procedure to Remove Four Way Valve and Coil
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Make sure the refrigerant is
completely empty.
1Remove the external
casing, etc., and
electrical parts
according to their
removal procedures.
2Remove the four way
valve.
3Heart the brazed parts
of the four way valve,
and remove the
assembly from the
piping side by drawing
out with a pair of pliers,
etc.
Note:
Apply the flame while cooling
with a leak cloth so that the
temperature of the main body
does not rise above 120 ºC.
Note:
When installing, first braze weld
the four way valve and attached
piping, then install the valve.
Be sure to check the position
angle of the piping when
brazing.

Procedure to Remove Compressor Si211311E
10 Removal Procedure
7. Procedure to Remove Compressor
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
∗Remove the external
casing, etc., according to its
removal procedure.
1Remove the
compressor sound-
proofing.
2Disconnect the
compressor lead wire
from the compressor
terminal. Remove the
solenoid valve coil.
3Heat the brazed parts
of the discharge and
suction pipes, and
remove from the piping
side with a pair of pliers,
etc.
Blue
Red
White

Si211311E Procedure to Remove Compressor
Removal Procedure 11
4Disconnect the
crankcase heater’s
spring and remove the
heater.
5Remove the
compressor’s 3 washer
based nuts.
Use a T-type box
spanner.
6Lift the compressor
slightly and draw out
toward yourself.
Step Procedure Points
Crankcase heater
Partition
plate

Revision History
Month / Year Version Revised contents
06 / 2013 Si211311E 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.
Organization:
DAIKIN INDUSTRIES, LTD.
AIR CONDITIONING MANUFACTURING DIVISION
Scope of Registration:
THE DESIGN/DEVELOPMENT AND MANUFACTURE OF
COMMERCIAL AIR CONDITIONING, HEATING, COOLING,
REFRIGERATING EQUIPMENT, HEATING EQUIPMENT,
RESIDENTIAL AIR CONDITIONING EQUIPMENT, HEAT
RECLAIM VENTILATION, AIR CLEANING EQUIPMENT,
COMPRESSORS AND VALVES.
Organization:
DAIKIN INDUSTRIES
(THAILAND) LTD.
Scope of Registration:
THE DESIGN/DEVELOPMENT
AND MANUFACTURE OF AIR
CONDITIONERS AND THE
COMPONENTS INCLUDING
COMPRESSORS USED FOR THEM
All of the Daikin Group’s business
facilities and subsidiaries in Japan
are certified under the ISO 14001
international standard for
environment management.
JMI-0107 JQA-1452
Dealer
z
Specifications, designs and other content appearing in this brochure are current as of June 2013 but subject to change without notice.
Si211311E
06/2013 AK