11 Disassembly Procedure - Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual

11 DISASSEMBLY PROCEDURE

PUMY-SP112VKM(R1).TH
PUMY-SP112YKM(R1).TH
PUMY-SP112VKM(R1).TH-BS
PUMY-SP112YKM(R1).TH-BS
OPERATING PROCEDURE
1. Removing the service panel and the 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.
2. Removing the fan motor (MF1)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 4 fan grille fixing screws (5 × 12) to detach
the fan grille. (See Photo 1)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (See Photo 2)
(5) Disconnect the connector CNF1 on the multi controller
circuit board in the electrical parts box. (See Photo 4)
(6) Loosen a clamp on the side of the motor support. (See
Photo 3)
(7) 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 i 0.3 N·m.
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 for VKM type, or Photo 7 for YKM type)
(4) Disconnect the connector CNF1, 4-way valve coil,
LEV-A and LEV-B on the multi controller circuit board.
<Symbols on the board>
• CNF1: Fan motor
• LEV-A: LEV
• LEV-B: LEV
• 21S4: 4-way valve coil
• 63HS: Pressure sensor
• SV1: Solenoid valve coil
• 63H: Pressure switch
• 63LS: Pressure sensor
(5) Disconnect the pipe-side connections of the following parts:
• Thermistor <HIC> (TH2)
• Thermistor <Compressor> (TH4)
• Thermistor <Liquid> (TH3)
• Thermistor <Suction> (TH6)
• Thermistor <Ambient> (TH7)
(6) Remove the comp felt (top).
(7) Remove a nut from the terminal cover to remove the
cover, and disconnect the compressor lead wire. (See
Photo11)
(8) Remove 2 electrical parts box fixing screws (4 × 10),
and detach the electrical parts box by pulling upward.
The electrical parts box is fixed with 2 hooks on the left
and 1 hook on the right.
OCH668B
PUMY-SP125VKM(R1).TH
PUMY-SP125YKM(R1).TH
PUMY-SP125VKM(R1).TH-BS
PUMY-SP125YKM(R1).TH-BS
137
PUMY-SP140VKM(R1).TH
PUMY-SP140YKM(R1).TH
PUMY-SP140VKM(R1).TH-BS
PUMY-SP140YKM(R1).TH-BS
PHOTOS/FIGURES
Photo 1
Top panel fixing screws
Grille fixing
screws
Photo 2
Front panel fixing screws
Propeller
Nut
Front panel
Front panel fixing screws
Photo 4
Multi controller circuit
board (MULTI.B.)
Valve bed
Compressor
lead wire
Compressor
(MC)
Top panel
Service
panel
Slide
Service
panel
fixing
screws
Cover panel
fixing
screws
Photo 3
Fan motor
fixing screws
Fan motor
Clamp
Fan motor fixing
screws
Electrical parts box
Electrical
parts box
fixing screws
Terminal
block
Side panel
Valve bed
fixing screws
Cover panel
(rear)
Cover panel (front)