Mitsubishi Electric EHGT17D-YM9ED Service Manual page 91

DISASSEMBLY PROCEDURE
19. How to remove the P-HEX.
(1) Pull out the module unit assy. (Refer to Procedure 11.)
(2) Remove the module box front. (Refer to Procedure 13-2.)
(3) Remove the module box top, the module box side L, the
module box side R, and the module box back from the
module unit assy. (Refer to Procedure 18-3.)
(4) Remove the TH34 lead wire. (Photo 19-1)
(If the pipe cover and the tape cannot be reused due to
removing the TH34 lead wire, obtain them locally.)
(5) Remove the booster heater. (Refer to Procedure 16.)
(6) Remove the COMP case top. (Refer to Procedure 18-5.)
(7) Remove the brine pump. (Refer to Procedure 13.)
(8) Remove the rubber cushion and the band. (Refer to
Procedure 17-10.)
(9) Remove the FS pipe band from the FS pipe stay (2 screws
4×10). (Photo 19-1)
(10) Remove the pipe BH-WPHEX and pipe BPHEX-FSWI
from the P-HEX (2 fasteners and 2 O-rings).(Photo 19-1)
(11) Recover refrigerant. (Refer to Procedure 17-8.)
(12) Remove the tape and the pipe cover. (Refer to Procedure
17-11.)
(13) Detach the 5 brazing portions of refrigerant pipes. (Photo
19-2)
(14) Remove the P-HEX (6 screws 4×10, 6 positions on one
side). (Photo 19-3)
Photo 19-3
Screws 4×10
20. How to remove the compressor
(1) Pull out the module unit assy. (Refer to Procedure 11.)
(2) Remove the module box front. (Refer to Procedure 13-2.)
(3) Remove the module box top, module box side L, module
box side R, and module box back. (Refer to Procedure
18-3.)
(4) Remove the booster heater. (Refer to Procedure 16.)
(5) Remove the COMP case top. (Refer to Procedure 18-5.)
(6) Recover refrigerant. (Refer to Procedure 17-8.)
(7) Remove the band E. (Refer to Procedure 18-8.)
(8) Remove the nut, the washer, and the terminal cover.
(Refer to Procedure 18-9.)
(9) Disconnect the lead wires (TH33, TH4, H.P. switch, and
COMP wire). (Refer to Procedure 18-10.)
(10) Remove the INS (SUC MUF). (Refer to Procedure 18-
11.)
(11) Detach 5 brazing portions of the refrigerant pipes (suction
and discharge). (Photo 20-1)
(12) Remove the pipe BHEX-C DWG and pipe C-WPHEX
assy from the pipe. (Photo 20-1)
(13) Remove the compressor (3 nut specials). (Photo 20-2)
Note: Tightening torque of the nut specials: 4 ± 0.4 N▪m
OCH722A
Screws 4×10
PHOTOS/ FIGURES
Photo 19-1
Pipe BH WPHEX
FS pipe
stay
FS pipe
Pipe BPHEX-FSWI
band
Screw 4×10
Photo 19-2
Photo 20-1
Brazing portions of refrigerant pipe
Pipe
C-WPHEX
assy
Photo 20-2
91
Fastener
Pipe cover
Tape
Band
TH34
Fastener
Brazing
portions
of refrig-
erant
pipe
Pipe BHEX-C
DWG
Band E
Nut specials