Removing Bypass Valve; Removing The High Pressure Switch; Removing The Reactor - Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual

OPERATING PROCEDURE

10. Removing bypass valve

(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 3 right side panel fixing screws (5
rear of the unit and remove the right side panel.
(5) Remove the bypass valve solenoid coil. (See photo 7.).
(6) Collect the refrigerant.
(7) Remove the welded part of bypass valve.
Note 1: Collect refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by removing
the right side panel.
11. Removing the high pressure switch (63H)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 3 right side panel fixing screws (5
rear of the unit and remove the right side panel.
(5) Pull out the lead wire of high pressure switch.
(6) Collect the refrigerant.
(7) Remove the welded part of high pressure switch.
Note 1: Collect 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 high pressure switch, cover it with
a wet cloth to prevent it from heating (100°C or more),
then braze the pipes so that the inside of pipes are
not oxidized.

12. Removing the reactor

(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
(4) Remove 3 reactor fixing screws (4
reactor.
w The reactor is attached to the rear of the electrical parts box.
Photo 9
Linear
10) in the
expansion
valve
Bypass
valve
solenoid
coil
(SV)
Bypass
valve
4-way
valve
solenoid
coil (21S4)
Photo 10
10) in the
Photo 11
16) and remove the
69
PHOTOS
Linear expansion Linear expansion
valve coil (LEV B) valve coil (LEV A)
Lead wire of
High pressure switch (63H)
high pressure switch
Reactor fixing screw
Reactor fixing screws
Linear
expansion
valve
4-way
valve
Reactor
Electrical parts box