Mitsubishi PUMY-P60NKMU Technical & Service Manual page 112

OPERATING PROCEDURE
8. Removing bypass valve coil (SV1) and bypass valve
(1) Remove the service panel and the top panel. (See Photo 1)
(2) Remove the electrical parts box (See Photos 4, 5)
(3) Remove 5 right side panel fixing screws (4: rear side, 1:
right side 5 × 12) and then remove the right side panel.
(4) Remove the bypass valve coil fixing screw (M4 × 6).
(5) Remove the bypass valve coil by sliding the coil upward.
(6) Disconnect the connector SV1 (white) on the Multi control-
ler circuit board in the electrical parts box.
(7) Recover refrigerant.
(8) Remove the welded part of bypass valve.
9. Removing the high pressure switch (63H)
(1) Remove the service panel and the top panel. (See Photo 1)
(2) Remove the electrical parts box. (See Photos 4, 5)
(3) Remove 5 right side panel fixing screws (4: rear side, 1:
right side 5 × 12) and then remove the right side panel.
(4) Remove the lead wires of the high pressure switch.
(5) Recover refrigerant.
(6) Remove the welded parts of the high pressure switch.
10. Removing the high pressure sensor (63HS) and low
pressure sensor (63LS)
(1) Remove the service panel and the top panel. (See Photo
1)
(2) Remove the electrical parts box. (See Photo 4)
(3) Remove 5 right side panel fixing screws (4: rear side, 1:
right side 5 × 12) and then remove the right side panel.
(4) Remove the lead wire of high pressure sensor.
(5) Recover refrigerant.
(6) Remove the welded part of high pressure sensor and low
pressure sensor.
11. Removing linear expansion valve (LEV-A, LEV-B)
(1) Remove the service panel and the top panel. (See Photo 1)
(2) Remove the electrical parts box. (See Photo 4)
(3) Remove 5 right side panel fixing screws (4: rear side, 1:
right side 5 × 12) and then remove the right side panel.
(4) Remove the linear expansion valve coil. (See Photo 12)
(5) Recover refrigerant.
(6) Remove the welded part of linear expansion valve.
Notes:
1: To recover refrigerants, do not release refrigerants into the atmosphere.
2: Remove the right side panel to remove the welded part easily.
3: When installing the refrigerant system parts, cover them with a wet cloth to prevent them from heating (100°C or more: high
pressure switch and high/low pressure sensor, 120°C or more: bypass valve coil, bypass valve and linear expansion valve),
then braze the pipes so that the inside of pipes are not oxidized.
OCH502C
PHOTOS
Photo 11
Thermistor
<Low pressure saturated temp.>
(TH6)
Bypass valve
coil fixing screw
Bypass valve
coil (SV1)
Bypass valve
High pressure
switch (63H)
High pressure
sensor (63HS)
4-way valve coil
(21S4)
Photo 12
Linear expansion
valve coil (LEV-B)
112
Low pressure
sensor (63LS)
4-way valve coil 4-way
fixing screw valve
Linear expansion
valve coil (LEV-A)
Linear expansion
valve (LEV-A)
Linear expansion
valve (LEV-B)