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OPERATING PROCEDURE
7. Removing the 4-way valve coil (21S4), and 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
circuit 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 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) then remove
the valve bed.
(4) Remove 9 side panel (R) fixing screws (5 × 12) in the rear
of the unit then remove the side panel (R).
(5) Remove the 4-way valve coil. (See Photo 7)
(6) Recover refrigerant.
(7) Remove the welded part of 4-way valve.
9. Removing LEV
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the valve bed. (Refer to procedure 8)
(4) Remove the side panel (R). (Refer to procedure 8)
(5) Remove the LEV. (See Photo 7)
(6) Recover refrigerant.
(7) Remove the welded part of LEV.
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 valve bed. (Refer to procedure 8)
(4) Remove the side panel (R). (Refer to procedure 8)
(5) Pull out the lead wire of high pressure switch.
(6) Recover refrigerant.
(7) Remove the welded part of high pressure switch.
OCH533D
Photo 7
4-way valve coil
fixing screw
Photo 8
LEV coil
High pressure switch (63H)
(LEV B)
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 4-way valve and 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.
Note 4: 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.
93
PHOTOS
LEV
4-way valve coil
(21S4)
LEV coil
(LEV A)
4-way valve
Charge plug
(Low pressure)
4-way valve
LEV
LEV coil
(LEV B)
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