OPERATING PROCEDURE
PHOTOS/FIGURES
9. Removing bypass valve coil (SV1) and bypass valve
(1)
Remove the service panel. (See Photo 1)
(2)
Remove the top panel. (See Photo 1)
(3)
Remove the cover panel (front). (Refer to procedure 8 (5))
(4)
Remove the cover panel (rear). (Refer to procedure 8 (6))
(5)
Remove the side panel (R). (Refer to procedure 8 (7))
(6)
Remove the bypass valve coil fixing screw (M4 × 6).
(7)
Remove the bypass valve coil by sliding the coil upward.
(8)
Disconnect the connector SV1 (gray) on the multi control-
ler circuit board in the electrical parts box.
(9)
Remove the electrical parts box. (See Photo 5)
(10)
Recover refrigerant.
(11)
Remove the welded part of bypass 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.
Photo 11
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 cover panel (front). (Refer to procedure 8 (5))
(4)
Remove the cover panel (rear). (Refer to procedure 8 (6))
(5)
Remove the side panel (R). (Refer to procedure 8 (7))
(6)
Pull out the lead wire of high pressure switch.
(7)
Remove the electrical parts box. (See Photo 5)
(8)
Recover refrigerant.
(9)
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 remov
-
ing 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.
Photo 12
11. Removing the low pressure sensor (63LS) and high
pressure sensor (63HS)
(1)
Remove the service panel. (See Photo 1)
(2)
Remove the top panel. (See Photo 1)
(3)
Remove the cover panel (front). (Refer to procedure 8 (5))
(4)
Remove the cover panel (rear). (Refer to procedure 8 (6))
(5)
Remove the side panel (R). (Refer to procedure 8 (7))
(6)
Disconnect the connector 63LS (blue) and 63HS(white) on
the multi controller circuit board in the electrical parts box.
(7)
Remove the electrical parts box. (See Photo 5)
(8)
Recover refrigerant.
(9)
Remove the welded part of low pressure sensor.
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 low pressure sensor and high
pressure sensor, cover them with a wet cloth to pre
-
vent them from heating (100°C or more), then braze
the pipes so that the inside of pipes are not oxidized.
12. Removing linear expansion valve (LEV-A, LEV-B)
(1)
Remove the service panel. (See Photo 1)
(2)
Remove the top panel. (See Photo 1)
(3)
Remove 3 right side panel fixing screws (5
o
12) in the
rear of the unit and remove the right side panel.
(4)
Remove the linear expansion valve coil. (See Photo 11,12)
(5)
Remove the electrical parts box. (See Photo 5)
(6)
Recover refrigerant.
(7)
Remove the welded part of linear expansion valve.
Note: When installing the linear expansion valve, 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.
High pressure
sensor (63HS)
High pressure
switch (63H)
Low pressure
sensor (63LS)
Bypass valve
coil fixing screw
Linear expansion valve
coil (LEV-B)
Bypass valve
coil (SV1)
Bypass valve
Linear
expansion
valve
Low pressure
sensor (63LS)
Linear expansion
valve coil (LEV-A)
Linear expansion
valve
151
OCH673D
Содержание CITY MULTI
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