Mitsubishi Electric PUHZ-FRP71VHA Service Manual page 102

OPERATING PROCEDURE
11. Removing the high pressure switch (63H)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 4)
(4) Remove the side panel (R) fixing screws (3 for rear, 5 × 12)
in the rear of the unit and remove the side panel (R).
(5) Pull out the lead wire of high pressure switch.
(6) Recover refrigerant.
(7) 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 side panel (R).
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.
12. Removing the high pressure sensor (63HS)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 4)
(4) Remove the side panel (R) fixing screws (3 for rear, 5 × 12)
in the rear of the unit and remove the side panel (R).
(5) Pull out the lead wire of high pressure sensor.
(6) Recover refrigerant.
(7) Remove the welded part of high pressure sensor.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the side panel (R).
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.
13. Removing the reactor (ACL)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 4)
(4) Remove the reactor fixing screws (3 places, 4 × 16) and
remove the reactor.
* The reactor is attached to the rear of the electrical parts box.
OCH544
Photo 10
Lead wire of high
pressure switch
High pressure
switch (63H)
Photo 11
Reactor fixing screw
Reactor fixing screws
102
PHOTOS
Lead wire of high
pressure sensor
High pressure
sensor (63HS)
Reactor
(ACL)
Electrical parts box