Mitsubishi Electric PUHZ-ZRP100VKA3.UK Service Manual page 109

OPERATING PROCEDURE
8. Removing the 4-way valve coil (21S4), LEV coil (LEV (A),
LEV (B), (LEV (C)) and lead wire for high pressure switch.
(1) Remove the electrical parts box. (See Photo 4 or 5)
(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.
Note: LEV-C is for ZRP140 model only.
9. Removing the 4-way valve, LEV (LEV (A), LEV (B)), (LEV
(C)) and high pressure switch.
(1) Remove the electrical parts box. (See Photo 4 or 5)
(2) Remove the cover panel (front) fixing screws (1 for front
and 1 for side/ 5 x 12), then slide the cover panel (front)
upward to remove it.
(The cover panel (front) is fixed to the cover panel (rear)
with a hook on the rear side.) (See Photo 1)
(3) Remove the cover panel (rear) fixing screw ( 2 for right
side and 2 for rear/ 5 x 12), the slide the cover panel (rear)
upward to remove it.
(The cover panel (rear) is fixed to the side plate with a
hook on the rear side.) (See Photo 1)
(4) Remove the valve bed fixing screws (3 for front/ 5 x 12)
and the ball valve and stop valve fixing screws ( 4 for
front/ 5 x 16) to remove the valve bed.
(5) Remove the side panel (R) fixing screws (3 for rear/ 5 x
12), then slide the side panel (R) upward to remove it.
(The side panel (R) is fixed to the side plate with a hook
on the rear side.)
(6) Recover refrigerant.
[Removing the 4-way valve]
(7) Remove the 4-way valve coil. (See photo 15 or 16)
(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 15 or 16)
(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 posi-
tion) 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 remov-
ing 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
Note 4: LEV-C is for ZRP140 model only.
OCH645D
PHOTOS/FIGURES
Photo 15 (ZPR100/125 model)
High pressure
switch
4-way valve
coil (21S4)
Compressor
Photo 16 (ZRP140 model)
LEV coil
(LEV C)
High pressure
switch
4-way valve
coil (21S4)
Compressor
109
LEV coil
(LEV A)
LEV coil
(LEV B)
Power
receiver
LEV coil
(LEV B)
LEV coil
(LEV A)
Power receiver