Disassembly Procedure - Mitsubishi Electric PAC-MK54BC Technical & Service Manual

8

DISASSEMBLY PROCEDURE

BRANCH BOX: PAC-MK54BC
OPERATING PROCEDURE
1. Removing the controller cover and under panel
(1) Remove 3 controller cover fixing screws (4 o 10) to
detach the controller cover. (See Photo 1)
(2) Remove 4 under panel fixing screws (4 o 10) to remove
the under panel. (See Photo 1)
2. Removing the thermistor (TH-A–E*)
(1) Remove the controller cover. (See Photo 1)
(2) Remove the under panel. (See Photo 1)
(3) Remove 8 insulations, then remove 9 pipe box (under)
fixing screws (4 o 10). (See Photo 2-1)
(4) Pull out the thermistor(s), TH-A–E, from the sensor hold-
ers mounted on the gas pipe. (See Photo 2-2)
(5) Loosen the insulation sheet which bundles the thermistor
connectors.
(6) Loosen the side clamps, then disconnect the connector(s)
on the controller board.
(7) Pull out the lead wire(s) through the hole to the controller
board side.
*TH-A–C for PAC-MK34BC (See Photo 2-3)
Photo 2-2
Sensor holders
LEV assy
Header assy
Insulation sheet
hole
OCH744
PAC-MK34BC
Rubber mount
Band
PHOTOS/FIGURES
Photo 1
Under panel fixing screws
Under panel
Controller cover
fixing screws
Photo 2-1
Pipe box (under) fixing screws
Pipe box
(under)
Screw
Insulations
(15 x 15 x 46)
Photo 2-3
Sensor holders
Header assy
LEV assy
hole
Insulation sheet
24
PHOTO: PAC-MK54BC
Controller cover
fixing screw
Controller cover
Screws
Insulations
(15 x 12 x 45)
Rubber mount
Band