Service manual

105
OPERATING PROCEDURE
PHOTOS
11. Removing solenoid valve coil <Bypass valve> (SV) and
bypass valve
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 3 right side panel fixing screws (5 ✕ 10) in the
rear of the unit and remove the right side panel.
(4) Remove the bypass valve solenoid coil fixing screw
(M4 ✕ 6).
(5) Remove the solenoid valve coil <Bypass valve> by
sliding the coil upward.
(6) Disconnect the connector SV2 (blue) on the controller
circuit board in the electrical parts box.
(7) Collect the refrigerant.
(8) Remove the welded part of bypass valve.
Note 1: Collect refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Photo 15
12. Removing the high pressure switch (63H) and
low pressure switch (63L)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 3 right side panel fixing screws (5 ✕ 10) in the
rear of the unit and remove the right side panel.
(4) Pull out the lead wire of high pressure switch and low
pressure switch.
(5) Collect the refrigerant.
(6) Remove the welded part of high pressure switch and low
pressure switch.
Note 1: Collect 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 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.
Bypass
valve
High pressure switch (63H)
Photo 16
Four-way
valve
Solenoid valve coil
<Bypass valve>
fixing screw
Solenoid
valve coil
<Bypass valve>
(SV)
Low pressure
switch (63L)
Four-way
valve
OC294-D-4.qxp 05.3.9 11:06 AM Page 105