Mitsubishi Electronics PUY-A12NHA2-BS, PUZ-A42NHA2-BS, PUZ-A30NHA2 109, Removing the 4-way valve

OPERATING PROCEDURE	PHOTOS
8. Removing the 4-way valve	Photo 10

(1)Remove the service panel. (See photo 1.)

(2)Remove the top panel. (See photo 1.)

(3)Remove the front panel. (See photo 1.)

(4)Remove the conduit cover and cord cover. (See photo 2.)

(5)Remove the back panel. (See photo 1.)

(6)	Remove the electrical parts box. (See photo 5.)	4-way valve 4-way valve coil
(7)	Remove the 4-way valve coil (See photo 8.)	fixing screw
(8)	Recover refrigerant.
(9)	Remove the welded part of four-way valve.

Note 1: Recover refrigerant without spreading it in the air.

Note 2: The welded part can be removed easily by remov- ing the right side panel.

Note 3: When installing the four-way valve, cover it with a wet cloth to prevent it from heating (250˚F or more), then braze the pipes so that the inside of pipes are not oxidized.

9.Removing linear expansion valve

(1)Remove the service panel. (See photo 1.)

(2)Remove the top panel. (See photo 1.)

(3)Remove the front panel. (See photo 1.)

(4)Remove the conduit cover and cord cover. (See photo 2.)

(5)Remove the back panel. (See photo 1.)

(6)Remove the electrical parts box. (See photo 5.)

(7)	Remove the linear expansion valve coil . (See photo 10.)						Linear expansion valve
(8)	Recover refrigerant.			4-way valve coil
(9)	Remove the welded part of linear expansion valve.			(21S4)
						Linear expansion
Note 1: Recover refrigerant without spreading it in the air.
						valve coil (LEV-A)
Note 2: The welded part can be removed easily by remov-
	ing the back panel.
Note 3: When installing the linear expansion valve, cover
	it with a wet cloth to prevent it from heating (250˚F
	or more), then braze the pipes so that the inside
	of pipes are not oxidized.
10. Removing the high pressure switch (63H)		Photo 11
(1)	Remove the service panel. (See photo 1.)
(2)	Remove the top panel. (See photo 1.)
			High pressure
(3)	Remove the front panel. (See photo 1.)
			switch (63H)
(4)	Remove the conduit cover and cord cover. (See photo 2.)
(5)	Remove the back panel. (See photo 1.)
(6)	Remove the electrical parts box. (See photo 5.)
(7)	Pull out the lead wire of high pressure switch.	Charge plug
(8)	Recover refrigerant.
(9)	Remove the welded part of 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 back panel.
Note 3: When installing the high pressure switch, cover it
	with a wet cloth to prevent it from heating (210˚F
	or more), then braze the pipes so that the inside
	of pipes are not oxidized.
11. Removing the reactor (ACL)		Photo 12			Reactor fixing screw

(1)Remove the service panel. (See photo 1.)

(2)Remove the top panel. (See photo 1.)

(3)Remove the front panel. (See photo 1.)

(4)	Remove the back panel. (See photo 1.)	Reactor
(5)	Remove 3 reactor fixing screws (4 ✕ 20) and remove the	(ACL)
	reactor.

wThe reactor is attached to the rear of the electrical parts box.

Electrical parts box

Reactor fixing screws

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