MXZ-SM36NAMHZ Service Manual

154
OCH789
OPERATING PROCEDURE PHOTOS/FIGURES
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 × 12) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (2 for front, 3 for rear/5 × 12) of the top
panel and remove it.
Photo 1
2. Removing the fan motor (MF1, MF2)
(1) Remove the service panel. (See Photo 1)
(2) Remove 4 fan grille fixing screws (5 × 12) to detach the
fan grille. (See Photo 1)
(3) Remove a nut (for right handed screw of M6) to detach
the propeller. (See Photo 2)
(4) Disconnect the connectors, CNF1 and CNF2 on multi
controller board in electrical parts box.
(5) Remove 4 fan motor fixing screws (5 × 20) to detach the
fan motor. (See Photo 3)
Note: Tighten the propeller fan with a torque of 5.7 ± 0.3
N·m [4.2 ± 0.2 ft = lbs]
Photo 2 Photo 3
3. Removing the electrical parts box
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connecting wire from terminal block. (See
Photo 5)
(4) Remove all the following connectors from outdoor multi
controller circuit board;
<Diagram symbol in the connector housing>
• Fan motor (CNF1, CNF2)
• Thermistor <HIC pipe> (TH2)
• Thermistor <Outdoor liquid pipe> (TH3)
• Thermistor <Compressor> (TH4)
• Thermistor <Suction pipe/Ambient, Outdoor> (TH7/6)
• High pressure switch (63H)
• High pressure sensor (63HS)
• Low pressure sensor (63LS)
• 4-way valve (21S4)
• Bypass valve (SV1)
• Linear expansion valve (CNLVA/CNLVB)
Pull out the disconnected wire from the electrical parts box.
(5) Remove the terminal cover and disconnect the compres-
sor lead wire.
Note: The terminal cover can be easily removed by using
a blade of flathead screwdriver.
Figure 1
Photo 4
: Indicates the visible parts in the photos/gures.
Cover panel (Front)
Electrical parts box
Terminal cover
Terminal block
(TB1B)
Multi controller
board (MULTI.B)
Terminal block
(TB3) (TB7)
Valve bed xing
screws (4 × 10)
Compressor
(MC)
Electrical parts
box xing screw
Cover panel xing screws
Terminal block
(TB1)
Valve bed
Cover panel
(Rear)
Front panel xing screws (5 x 12)
Front panel
xing screws (5 x 12)
Front panel xing screws (4 x 10)
MXZ-SM60NAM-U1
Continue to the next page.
Note: Turn OFF the power supply before disassembly.
Terminal cover
Comp. terminal
Propeller Front panel
Nut
Fan motor xing screws
Fan
motor
Fan motor xing screws
Top panel xing screws
Top panel
Service panel
xing screws
Service panel
Fan grille
Grille xing
screws
Grille xing
screws
Slide