OPERATING PROCEDURE
PHOTOS
89
7. Removing the 4-way valve coil (21S4), LEV coil (LEV-A,
LEV-B)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
[Removing the 4-way valve coil]
(3) Remove 4-way valve coil fixing screw (M5 × 6).
(4) Remove the 4-way valve coil by sliding the coil toward you.
(5) Disconnect the connector 21S4 (green) on the controller
board in the electrical parts box.
(6) Loosen the clamp on the separator and unbind the lead
wires.
[Removing the LEV coil]
(3) Remove the LEV coil by sliding the coil upward.
(4) Disconnect the connectors, LEV A (white) and LEV B (red),
on the controller circuit board in the electrical parts box.
(5) Loosen the clamp on the separator and under the electrical
parts box, then unbind the lead wires.
8. Removing the 4-way valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 3)
(4) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve
and stop valve fixing screws (5 × 16) and then remove the
valve bed.
(5) Remove 4 side panel (R) fixing screws (5 × 12) in the rear
of the unit and then remove the side panel (R).
(6) Remove the 4-way valve coil. (See Photo 7)
(7) Recover refrigerant.
(8) Remove the welded part of 4-way valve.
Refer to the notes below.
9. Removing the LEV
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 3)
(4) Remove the valve bed. (Refer to procedure 8)
(5) Remove the side panel (R). (Refer to procedure 8)
(6) Remove the LEV.
(7) Recover refrigerant.
(8) Remove the welded part of linear expansion valve.
Refer to the notes below.
Photo 7
4-way valve coil
fixing screw
4-way valve
High pressure
switch (63H)
Photo 8
LEV
LEV coil
(LEV B)
High pressure
sensor (63HS)
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 following parts, make sure
to cover it with a wet cloth to prevent it from
heating as the temperature below, then braze
the pipes so that the inside of pipes are not
oxidized;
•
4-way valve (procedure 8), 120°C or more
•
LEV (procedure 9), 120°C or more
•
High pressure switch (procedure 10), 100°C or more
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 the electrical parts box. (See Photo 3)
(4) Remove the valve bed. (Refer to procedure 8)
(5) Remove the side panel (R). (Refer to procedure 8)
(6) Pull out the lead wire of high pressure switch.
(7) Recover refrigerant.
(8) Remove the welded part of high pressure switch.
Refer to the notes on the right.
LEV
4-way
valve
LEV coil (LEV A)
LEV coil
(LEV B)
Valve bed
Valve bed
fixing screws
OCH533D