Daikin 3MWKS30KV1S User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
80 kW Class
30000 Btu/h Class
Outdoor Unit
Inverter
Multi Type
Si121177

Service Manual
Removal Procedure
Outdoor Unit
Applicable Models
zCooling Only
3MWKS30KV1S
3MWKS80KV1
zWater Heater
TUL-55KVM
TUL-75KVM
TUL-100KVM
TUR-55KVM
TUR-75KVM
TUR-100KVM

Si121177
Removal Procedure 1
Table of Contents
1. Outdoor Unit............................................................................................2
1.1 Removal of Outer Panels / Outdoor Fan ..................................................2
1.2 Removal of Fan Motor............................................................................15
1.3 Removal of Electrical Box ......................................................................17
1.4 Removal of PCBs ...................................................................................23
1.5 Removal of Reactor................................................................................29
1.6 Removal of Coils / Thermistors ..............................................................30
1.7 Removal of Sound Blankets ...................................................................32
1.8 Removal of Compressor.........................................................................34
2. Removal of Water Heater......................................................................36
Note: The illustrations may be slightly different depending on the model.

Outdoor Unit Si121177
2Removal Procedure
1. Outdoor Unit
1.1 Removal of Outer Panels / Outdoor Fan
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Features
2. Remove the suction grille. The hooks are secured in
the clearances of the
outdoor heat exchanger fins.
1Unfasten the 2 hooks at
the bottom.
(R9036)
Hook
Rear side
(R13635)
Suction grille
(R6370)

Si121177 Outdoor Unit
Removal Procedure 3
2Slide the suction grille
downwards to unfasten
the 3 top hooks.
3Remove the suction
grille.
3. Remove the top panel.
1Remove the 4 screws
on the back and the
screw on the left side.
Step Procedure Points
Hook
(
R13636
)
(R6372)
Top panel
(R13761)

Outdoor Unit Si121177
4Removal Procedure
2Remove the 2 screws
on the front and the
screw on the right side
panel.
3Lift the top panel and
remove it.
Step Procedure Points
(R9037)
Right
side
panel
(R9038)

Si121177 Outdoor Unit
Removal Procedure 5
4. Remove the front panel
(2). This screw is M5 × 16
1Remove the 5 screws.
2Slide the front panel (2)
downwards to release
the hook.
Step Procedure Points
+
Front Panel (2)
Front
Panel (1)
(R13637)
(R9043)
(R13638)
Hook

Outdoor Unit Si121177
6Removal Procedure
3Remove the front panel
(2).
5. Remove the right side
panel.
1Remove the 2 screws.
Step Procedure Points
(R13639)
Right side panel (R13640)

Si121177 Outdoor Unit
Removal Procedure 7
2Slide the right side
panel downwards to
unfasten the 2 hooks on
the back side.
Step Procedure Points
(R13645)
Hook
(R6378)
Hook
(R13646)

Outdoor Unit Si121177
8Removal Procedure
6. Remove the outdoor fan
and the front panel (1).
Remove the discharge grille
and outdoor fan first to
remove the front panel (1).
1Remove the 4 screws
on the discharge grille.
2Slide the discharge
grille downwards to
unfasten the 2 hooks at
the top.
3Remove the discharge
grille.
Step Procedure Points
(R13641)
Discharge grille
Front
Panel (1)
Hook
(R13643)
(R13642)

Si121177 Outdoor Unit
Removal Procedure 9
4Remove the nut and
remove the outdoor fan.
Nut size : M8
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
5Remove the 3 screws
on the front panel (1).
6Remove the 2 screws
at the bottom of the
back side.
Step Procedure Points
(R13644)
Outdoor fan
13 mm
(R12301)
(R13647)
(R13648)

Outdoor Unit Si121177
10 Removal Procedure
7Remove the front panel
(1).
Be sure to detach the front
panel (1) carefully so as not
to deform it.
Step Procedure Points
(R13649)

Si121177 Outdoor Unit
Removal Procedure 11
7. Remove the rear panel.
1Remove the screw on
the partition plate (2)
and remove the
partition plate (2).
2Remove the 5 screws
and remove the wire
fixing plate.
3Disconnect the
connecting wires.
Step Procedure Points
(R13650)
Partition
plate (2)
Rear panel
(R13651)
Wire fixing
plate
(R13652)

Outdoor Unit Si121177
12 Removal Procedure
4Disconnect the
connector [S402].
[S402]: water heater thermistor
5Remove the screw of
the resin clamp.
When reassembling, attach
the resin clamp as below.
6Remove the water
heater thermistor.
7Pull out the holder of
the outdoor
temperature thermistor.
The holder is secured in the
clearances of the outdoor
heat exchanger fins.
Step Procedure Points
(R13653)
[S402]
(R13654)
Resin
clamp
<Good>
<Wrong>
(R15739)
(R15740)
Water
heater
thermistor
(R10388)
Outdoor temperature thermistor

Si121177 Outdoor Unit
Removal Procedure 13
8Release the thermistor
wire from the groove.
9Remove the 3 screws
on the rear panel.
10 Remove the screw on
the bottom frame.
Step Procedure Points
Groove
(R10389)
Rear panel
(R13656)
(R13657)

Outdoor Unit Si121177
14 Removal Procedure
11 Remove the screw on
the stop valve mounting
plate.
12 Lift the rear panel
upwards to unfasten the
2 hooks.
13 Remove the rear panel.
Step Procedure Points
Stop
valve
mounting
plate
(R13658)
(R13659)
Hook
(R13660)

Si121177 Outdoor Unit
Removal Procedure 15
1.2 Removal of 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
1Cut the 2 clamps.
2Disconnect the
connector [S70].
[S70]: fan motor
3Release the fan motor
lead wire from the 5
hooks.
+: When reassembling, do not
use these 2 hooks.
Clamp
(R13661)
[S70]
(R13662)
(R13663)
Fan motor
lead wire
+

Outdoor Unit Si121177
16 Removal Procedure
4
5
Remove the 2 lower
screws of the fan motor.
Remove the 2 upper
screws.
Be sure to remove the lower
screws first. If the upper
screws are removed first, the
fan motor may tilt or fall
because its centre of gravity
shifts to the front.
It may cause injuries.
6 Remove the fan motor. When reassembling, make
sure that the wire harness is
facing downwards.
Step Procedure Points
2
1
(R13664)
Fan motor
(R13665)
(R6444)
Harness

Si121177 Outdoor Unit
Removal Procedure 17
1.3 Removal of Electrical Box
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Disconnect the
connector [S70].
[S70]: fan motor
2Release the fan motor
lead wire from the 5
hooks.
+: When reassembling, do not
use these 2 hooks.
3Disconnect the
connectors for the
electronic expansion
valve coils [S20], [S21],
[S22].
Pull out the clamp.
[S20] (white): room A
[S21] (red) : room B
[S22] (blue) : room C
When reassembling, insert
the clamps into the small
holes as below.
[S70]
(R13662)
(R13663)
Fan motor
lead wire
+
[S20] [S21] [S22]
(R15741)
Clamp
(R13762)
Electronic expansion
valve coils
Gas pipe thermistors
Thermistor
ASSY
Overload protector
and high pressure
switch

Outdoor Unit Si121177
18 Removal Procedure
4Disconnect the
connector [S80].
Pull out the clamp.
[S80]: four way valve coil
5 Disconnect the
connector [S92].
Pull out the clamp.
[S92]: gas pipe thermistors
(each room, water heater)
6 Disconnect the
connector [S90].
Pull out the clamp.
[S90]: thermistor ASSY
Step Procedure Points
Clamp
[S80]
(R13667)
[S92] Clamp
(R13668)
[S90]
Clamp
(R13669)