Mitsubishi Electric PUZ-M200YKA Service Manual page 107

OPERATING PROCEDURE
8. Removing the 4-way valve coil (21S4), LEV coil (LEV(A)/
LEV(B)) and lead wire for high pressure switch.
(1) Remove the electrical parts box. (See Photo 4)
(2) Loosen the clamp for the lead wire on separator.
[Removing the lead wire for high pressure switch]
(3) Disconnect the lead wire from the high pressure switch.
[Removing the 4-way valve coil]
(3) Remove the 4-way valve coil fixing screw (1 for front/
M5) to remove the 4-way valve coil.
(4) Slide the 4-way valve coil forward to remove it.
[Removing the LEV coil]
(3) Loosen the lead wires fixed to the pipes with bands.
(4) Slide the LEV coil upward to remove it.
9. Removing the 4-way valve, LEV (LEV(A)/LEV(B)) and high
pressure switch.
(1) Remove the electrical parts box. (See Photo 4)
(2) Remove the cover panel (front). (See Photo 1)
(3) Remove the cover panel (rear). (See Photo 1)
(4) Remove the valve bed. (See Photo 14)
(5) Remove the side panel (R).
(6) Recover refrigerant.
[Removing the 4-way valve]
(7) Remove the 4-way valve coil. (See photo 13)
(8) Remove the welded part of 4-way valve (4 positions) to
remove the 4-way valve.
[Removing the LEV]
(7) Remove the LEV coil. (See photo 13)
(8) Remove the welded part of LEV (2 positions) to remove
the LEV.
[Removing the high pressure switch]
(7) Disconnect the lead wire from the high pressure switch.
(8) Remove the welded part of high pressure switch
(1 position) to remove the high pressure switch.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the side panel (R).
Note 3: When installing the following parts, cover it with
a wet cloth to prevent it from heating as the tem-
perature below, then braze the pipes so that the
inside of pipes are not oxidized;
• 4-way valve, 120°C or more
• LEV, 120°C or more
• High pressure switch, 100°C or more
OCH737
PHOTOS/FIGURES
Photo 13
4-way
valve coil
(21S4)
107
High pressure
switch
LEV coil
(LEV A)
LEV coil
(LEV B)
Power receiver