Mitsubishi Electric PUZ-SM100VKA2 Service Manual page 89

OPERATING PROCEDURE
8. Removing LEV coil
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the LEV coil by sliding the coil upward.
(See Photo 19)
(4) Disconnect the connectors, LEV-B (RD) on the controller
circuit board in the electrical parts box.
9. Removing LEV
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 2 cover panel (front) fixing screws (5 × 12) and
remove the cover panel (front). (See Photo 1)
(4) Remove 4 cover panel (rear) fixing screws (5 × 12) and
remove the cover panel (rear).
(5) Remove 3 valve bed fixing screws (4 × 10) and 4 stop
valve fixing screws (5 × 16, 2 for gas and 2 for liquid) then
remove the valve bed.(See Photo 18)
(6) Remove 2 right side panel fixing screws (5 × 12) in the rear
of the unit then remove the right side panel.
(See Photo 18)
(7) Remove the LEV coil.(See Photo 19)
(8) Recover refrigerant.
(9) Remove the welded part of LEV.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Note 3: When installing the LEV, cover it with a wet cloth
to prevent it from heating (120°C or more), then
braze the pipes so that the inside of pipes are not
oxidized.
10. Removing the high pressure switch (63H)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 2 cover panel (front) fixing screws (5 × 12) and
remove the cover panel (front). (See Photo 1)
(4) Remove 4 cover panel (rear) fixing screws (5 × 12) and
remove the cover panel (rear). (See Photo 1)
(5) Remove 4 right side panel fixing screws (5 × 12) in the rear of
the unit and remove the right side panel (See Photo 18)
(6) Pull out the lead wire of high pressure switch. (See Photo 19)
(7) Recover refrigerant.
(8) Remove the welded part of high pressure switch.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Note 3: When installing the high pressure switch, cover it
with a wet cloth to prevent it from heating (100°C
or more), then braze the pipes so that the inside of
pipes are not oxidized.
OCH774A
PHOTOS/FIGURES
Photo 18
Valve bed
fixing screw
Valve bed
Photo 19
High pressure switch
4-way
valve coil
4-way valve coil
4-way valve
fixing screw
89
Side panel
fixing screw
Side panel
Valve bed
fixing screws
(Fixing the
right side
panel also)
Stop valve
Stop valve
LEV coil