Mitsubishi Electric Mr.Slim PUHZ-SHW230YKA2, Руководство по обслуживанию

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OPERATING PROCEDURE PHOTOS/FIGURES
7. Removing the 4-way valve coil (21S4) and linear
expansion valve coil (LEV-A, LEV-B, LEV-C)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
[Removing the 4-way valve coil]
(3) Disconnect the connector of 21S4 on the controller
circuit board in the electrical parts box.
Release the lead wire of the 4-way valve from the
fastener and the cable strap in the electrical parts box.
(4) Remove 4-way valve coil fixing screw (M4 × 6).
(5) Remove the 4-way valve coil by sliding the coil toward you.
[Removing the linear expansion valve coil]
(3) Remove the electrical parts box. (See Photo 3)
(4) Remove 3 right side panel fixing screws (5 × 12) in the
rear of the unit then remove the right side panel.
(5) Cut the cable tie for fall-off prevention of LEV coils to
release the lead wires.
(6) Remove the linear expansion valve coil by sliding the coil
upward.
Figure 3
< YKA2/YKA2R1 type >
< YKA2R2 type >
Note 1: Recover 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 parts of refrigerant circuit, 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.
Figure 4
8. Removing the 4-way valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 3)
(4) Remove 3 valve bed fixing screws (4 × 10), 4 ball valve
and stop valve fixing screws (5 × 16) then remove the
valve bed.
(5) Remove cover panel (front) fixing screws (2 for front/5 × 12)
to remove the cover panel (front).
(6) Remove right side panel fixing screws (3 for heat
exchanger/5 × 12) and 2 cover panel (rear) fixing screws
(5 × 12) in the side and rear of the unit (both of them are
fixed in the base) then remove the right side panel and
the cover panel together. (See Figure 4)
(7) Remove the 4-way valve coil.
(8) Recover refrigerant.
(9) Remove the welded part of 4-way valve.
9. Removing the linear expansion valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 3 valve bed fixing screws (4 × 10), 4 ball valve
and stop valve fixing screws (5 × 16) then remove the
valve bed.
(4) Remove cover panel (front) fixing screws (2 for front/5 × 12)
to remove the cover panel (front).
(5) Remove right side panel fixing screws (3 for heat
exchanger/5 × 12) and 2 cover panel (rear) fixing screws
(5 × 12) in the side and rear of the unit (both of them are
fixed in the base) then remove the right side panel and
the cover panel together. (See Figure 4)
(6) Remove the linear expansion valve coil.
(7) Recover refrigerant.
(8) Remove the welded part of linear expansion valve.
4-way valve coil
fixing screw
4-way valve coil
fixing screw
4-way valve coil
(21S4)
4-way valve coil
(21S4)
4-way valve
4-way valve
Linear expansion
valve coil
(LEV-C)
Linear expansion
valve coil
(LEV-C)
Linear
expansion
valve coil
(LEV-B)
Linear
expansion
valve coil
(LEV-B)
Linear
expansion
valve coil
(LEV-A)
Linear
expansion
valve coil
(LEV-A)
Linear expansion valves
Linear expansion valves
right side
panel fixing
screws
cover panel (rear)
fixing screws
60
OCH594B