Disassembly Procedure - Mitsubishi PUMY-P100YHM Technical & Service Manual

12

DISASSEMBLY PROCEDURE

OUTDOOR UNIT : PUMY-P100YHM
PUMY-P100YHM
PUMY-P100YHMA(-BS) PUMY-P125YHMA(-BS) PUMY-P140YHMA(-BS)
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 × 10) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5 × 10) of the top
panel and remove it.
2. Removing the fan motor (MF1, MF2)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 5 fan grille fixing screws (5 × 10) to detach the
fan grille. (See figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (See photo 1.)
(5) Disconnect the connectors, CNF1 and CNF2 on Multi
controller board in electrical parts box.
(6) Remove 4 fan motor fixing screws (5 × 25) to detach the
fan motor. (See photo 2.)
3. Removing the electrical parts box
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connecting wire from terminal block.
(4) Remove all the following connectors from Multi controller board;
fan motor, thermistor <Outdoor pipe>, thermistor <Discharge>,
thermistor <Low pressure saturated temp>,
thermistor <Outdoor>, high pressure switch,
high pressure sensor, low pressure switch,
solenoid valve coil <Four-way valve> and solenoid
valve coil <Bypass valve>.
Then remove a screw (4 × 8) from the valve bed to remove
the lead wire.
Pull out the disconnected wire from the electrical parts box.
<Diagram symbol in the connector housing>
• Fan motor (CNF1, CNF2)
• Thermistor <Outdoor pipe> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <Low pressure saturated temp, Outdoor>
(TH6/7)
• High pressure switch (63H)
• High pressure sensor (63HS)
• Low pressure switch (63L)
• Solenoid valve coil <Four-way valve> (21S4)
• Solenoid valve coil <Bypass valve> (SV1)
(5) Remove the terminal cover and disconnect the
compressor lead wire.
PUMY-P125YHM
PUMY-P125YHM
1
Figure 1
Grille
fixing
screws
Grille
fixing
screws
Photo 1
Propeller
Nut
Photo 3
81
PUMY-P140YHM
PUMY-P140YHM
1
PHOTOS & ILLUSTRATION
Top panel fixing screws
Slide
Photo 2
Front panel
Fan motor fixing screws Fan motor
Fan motor fixing screws
Cover panel fixing screws
Continued to the next page.
1
Top panel
Service panel
Fan grille
Service panel
fixing screws
Electrical
parts box
Noise filter cir-
cuit board (NF)
Multi controller
board (MULTI.B)
Terminal block
(TB1)
Terminal block
(TB3) (TB7)
Screw
Valve bed
Compressor
(MC)
Terminal cover
Cover panel
(Front)