Removing The 4-Way Valve; Removing Lev; Removing The Reactor (Acl) - Mitsubishi Electric PUHZ-SW40VHA Service Manual

OPERATING PROCEDURE

8. Removing the 4-way valve

(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove the electrical parts box. (See Photo 5)
(6) Remove the 4-way valve (See Photo 9)
(7) Recover refrigerant.
(8) Remove the welded part of 4-way valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the 4-way valve, 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.

9. Removing LEV

(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove the electrical parts box. (See Photo 5)
(6) Remove the LEV coil. (See Photo 9)
(7) Recover refrigerant.
(8) 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 remov-
ing the back panel.
Note 3: When installing the 4-way valve or 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) and high pres-
sure sensor (63HS)
(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove the electrical parts box. (See Photo 5)
[Removing the high pressure switch (63H)]
(6) Pull out the lead wire of high pressure switch.
(7) Recover refrigerant.
(8) Remove the welded part of high pressure switch.
[Removing the high pressure sensor (63HS)]
(6) Pull out the lead wire of high pressure sensor.
(7) Recover refrigerant.
(8) 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 back 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.

11. Removing the reactor (ACL)

(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove 3 reactor fixing screws (4 × 20) and remove the
reactor.
w The reactor is attached to the rear of the electrical parts box.
OCH525
PHOTOS
Photo 10
LEV coil
(LEV B)
4-way valve coil
LEV
fixing screw
Photo 11
Reactor fixing screw
Photo 12
Reactor fixing screws
58
LEV coil 4-way valve coil
(LEV A) (21S4)
4-way valve
High pressure
switch (63H)
Charge plug
High pressure
sensor (63HS)
Reactor
(ACL)
Electrical
parts box